Preferred Vodacom lines! It has 30% more base stations, and Kruger signal is the most stable. Recommended Airalo: $15/5GB, exempt from RICA real-name registration, 4G/5G available upon landing, with full signal coverage in Cape Town and Safari.
Network Coverage
Four Major Operators
South Africa’s phone cards are basically divided among four large companies. Vodacom has taken 42% of the market share. This company has set up more than 15,000 signal towers across the country, sending radio waves to the places where 99.8% of people live. Running to a farm 400 kilometers away from Johannesburg, the mobile phone screen still shows a 2G signal, sending a 20-byte short message without any pressure.
The second-ranked MTN holds 34% of the territory. This company throws all its money into high-speed internet facilities in the city. When MTN tested 5G around Pretoria, download speeds hit 890 megabits per second. They installed a large number of high-frequency antennas around shopping malls, and the internet speed is extremely fast. Facing a 30 cm thick solid brick wall, high-frequency radio waves have zero penetration power.
Telkom and Cell C are living tight lives. The signal towers built by the two combined are less than half of Vodacom’s. Telkom erected about 6,000 iron towers in the eastern suburbs of Pretoria, barely maintaining calls without disconnection. Cell C shut down its own old equipment and spent money to rent MTN’s channels to make calls for 12 million customers.
Buying a local phone card, the internet connection experience is worlds apart.
| Company Name | Real Number of Base Stations | 5G Download Measured Speed | Disconnection Rate in Remote Areas |
|---|---|---|---|
| Vodacom | More than 15,000 | 145 megabits per second | Less than 8% |
| MTN | More than 12,000 | 215 megabits per second | About 15% |
| Telkom | More than 6,000 | 85 megabits per second | About 32% |
| Cell C | Renting external networks | 60 megabits per second | More than 45% |
Vodacom is extremely willing to spend money in the middle of nowhere. Beside the dirt roads of Kruger National Park, staff build a communication tower with a 150-watt solar panel every 15 kilometers. The emitted 800 MHz low-frequency radio waves can crawl along the ground and bypass a large thicket of trees, forcefully stretching a tower’s signal range to 8 kilometers away.
The distance between towers built by MTN in the city is less than 400 meters. Engineers abandoned large iron towers and hung hundreds of 40 cm long small transmitter boxes on utility poles. Standing at Nelson Mandela Square in the center of Sandton, the internet speed allocated to one mobile phone is exactly 40 times that of remote places. Hundreds of black iron boxes are disguised as street light parts and blend into the streetscape.
Daily power outages for 6 hours have become common, and the test relies entirely on each company’s backup battery inventory.
- Vodacom spent 4 billion Rand to buy back 80,000 sets of huge lead-acid battery packs
- MTN pulled out 6 billion Rand to install 50-kilowatt diesel generators for signal towers in the suburbs
- More than 30% of Telkom’s remote suburban transmitter towers lack basic backup power sources
- Every day, 400,000 liters of diesel are delivered by trucks on bumpy dirt roads to refuel generators
Vodacom’s huge batteries allow signal towers to hold on for 4 to 5 hours after a power outage. The machine will automatically shut down the extremely power-consuming 5G modules, squeezing tens of thousands of people into the 4G network. In the suburbs of Gauteng province in the middle of the night, internet speeds plunge from 60 megabits during the day to only 5 megabits. The high-definition video option on mobile phones automatically changes to standard-definition quality.
MTN hired hundreds of armed patrol teams to watch base stations around the clock. Expensive batteries weighing 30 kg have become targets for theft gangs. Last year, 2,500 old base station batteries flowed into the black market. When batteries on towers in the middle of nowhere are stolen, for more than half a month before new batteries are installed, all mobile phones within a 3-kilometer radius are in a “No Service” state.
The outcome of the four companies fighting for invisible radio wave channels is very different.
- MTN grabbed the 3500 MHz wide frequency band to deal with the high-density crowds in office buildings
- Vodacom took the 700 MHz low frequency band to cover remote areas deep in the mountains
- Cell C withdrew from bidding to focus on renting other people’s existing network channels
Cape Town
5G equipment at Victoria & Alfred Waterfront is very dense. Tourists stroll along the waterfront, and measured mobile phone download speeds stay between 520 to 680 megabits per second. Facing an annual crowd of 2 million tourists, network latency stays at an extremely fast 18 milliseconds. 12 micro antenna boxes are placed on the waterfront’s open-air plaza to ensure smooth networking under extremely high population density.
Walking toward Olifantsbos, the mobile phone will automatically switch back to the 4G network. Walking into the indoor environment of a mall’s basement level 1, the upload speed is 45 megabits per second, with no lag when starting a live broadcast or watching 4K high-definition video. The thickness of the load-bearing walls in the underground garage exceeds 50 cm, and the mobile phone can connect to three different frequency signal sources at once to maintain a continuous connection.
- Signal strength is between an excellent -75 to -85
- Web page click response time only takes 15 to 22 milliseconds
- Average download speed in indoor blind spots is stable at 80 megabits
Table Mountain is 1085 meters above sea level, the mountaintop has no obstructions and is completely exposed to the sight of the city transmitter towers. Taking the cable car to climb to a height of 400 meters, the network changes from 5G to 4G, and the download speed in mid-air reaches 110 megabits per second. The metal cable car carriage shell has a reflective effect on radio waves, and the internet speed measured close to the window edge is 20% faster than the center of the carriage.
Hiking along the path to near Maclear’s Beacon, the signal bars will decrease by one bar. The network value at this location becomes -95, and it takes about 3 seconds to send a 10MB original image. Atmospheric humidity changes on windy days will cause the transmitter base station signal to have a 5% offset, and the wireless internet equipment at the mountaintop visitor center relies entirely on a university campus 3 kilometers away at the foot of the mountain to directionally emit radio waves to maintain operation.
The giant rocks of Lion’s Head block a large amount of electromagnetic waves. On the north side facing the city, the signal is full, but rounding to the west side facing the Atlantic, the internet speed immediately slows down by 15%. Walking on the winding mountain trail, locking the phone to the 900 MHz low frequency band will be more stable. There are 4 obvious signal loss points on this 2.5-kilometer-long circular hiking route.
Beside Victoria Road in Camps Bay, disguised antennas made into palm tree shapes are hidden. Walking on the seaside road, the internet speed jumps between 85 to 120 megabits per second. Some private villa driveways at the foot of the Twelve Apostles have no signal at all; dense hedges block the sea breeze blowing from the beach direction, and incidentally cut off weak mobile phone radio waves completely.
The M6 highway to Cape of Good Hope is tightly pressed against vertical rock walls, and outside radio waves cannot enter. On the 9-kilometer-long winding section of Chapman’s Peak Drive, the phone constantly jumps between 3G and 4G, and the total disconnection time adds up to two minutes. The 11 sharp bends at the corners of the rock walls are complete signal vacuum zones.
The Cape Point Nature Reserve relies only on an antenna tower beside the South African Astronomical Observatory to provide service. Standing next to that famous wooden sign at the Cape of Good Hope, the signal is extremely weak, and it takes 2 to 5 seconds of waiting in place to open an ordinary web page. When tourists walk under the old lighthouse at the topmost tip of the cape, the mobile phone screen often shows a “No Service” state.
- Chapman’s Peak Drive will completely disconnect 3 times on average
- The highest download speed in the reserve is only 12 megabits
- Save 500MB of offline maps in your phone in advance
Both sides of Adderley Street in Cape Town’s Central Business District are full of skyscrapers. Thick concrete walls will cause signal strength loss by more than half, and reflections from building glass will cause GPS positioning on mobile phone maps to deviate from the real position by 15 meters. In low-level shops of office buildings, mobile phones can only capture weak signals after multiple reflections.
Encountering the 4:30 PM off-work rush hour, tens of thousands of people crowd onto a few streets to get online together. At this time, the network becomes exceptionally congested, and the originally flying download speed will instantly plunge to 25 megabits per second. In the traffic flow waiting for red lights at intersections, more than 3,000 devices are fighting for the network quota of the same street corner base station.
At sunset, Signal Hill will have more than five thousand tourists holding up phones to take pictures of the evening glow. Facing an extremely dense crowd, MTN network equipment relies on a combination of 64 transmitting and receiving antennas, which can make photo sending speeds much faster than the Vodacom network. The internet speed on the paragliding takeoff lawn at the mountaintop can hit a maximum of 350 megabits per second.
Klein Constantia wine estate is located in a valley depression. Walking under the grape trellises, the phone only has 8 megabits per second internet speed. Setting the phone to pure 4G mode can prevent it from jumping back to 2G, which would cause the payment code to fail to load when paying the bill. The estate’s interior covers 146 hectares and relies only on two short pillar antennas at the entrance to maintain basic communication for the whole park.
In 2026, South Africa is still having power outages by district. 95% of the transmitter towers in Cape Town are equipped with backup batteries that can only last 4 to 6 hours. When the power outage level reaches stage 4 or above, the extremely power-consuming 5G function will be forcibly turned off. In districts experiencing 3 power outages a day, batteries simply don’t have time to fully charge.
The top right corner of the screen shows full 4G bars, but the real internet speed has actually shrunk by half. Small transmitter towers in the suburbs struggling on storage batteries easily break down completely. Once the power is out for more than 8 hours, all mobile phones within a 5-kilometer radius will be in a state where they cannot make outgoing calls.
Lush leaves in Kirstenbosch Botanical Garden absorb high-frequency radio waves like a sponge. Walking on the treetop canopy walkway 12 meters above the ground, avoiding the obstruction of leaves, the measured download speed recovers to 55 megabits per second. On the dirt paths covered with fallen leaves on the ground, the internet speed is only a miserable 3 megabits per second.
- Indoor speed at the international airport is as high as 800 megabits
- It takes less than 15 seconds to connect to the internet after the plane lands
- MTN internet speed is 15% faster on urban main roads
Kruger National Park
Kruger National Park covers 19,000 square kilometers, and the area is astonishingly large. Signal-emitting steel frame towers are all built around places where tourists gather. Skukuza is the most extensive accommodation area in the park, with a 45-meter-high thick antenna erected in the open space. Sitting in the large open-air restaurant that can hold 250 people and eating barbecue, the download speed measured on the phone screen can hit 85 megabits per second.
The camp center has no big trees blocking the way; it only takes 25 seconds to click on the album and upload a 200MB animal video to the internet. After finishing the meal and walking back to the ordinary canvas tent area 800 meters away, the internet speed drops to 30 megabits per second in the blink of an eye. The walls of that three-story red brick office building in the camp are extremely thick; hiding in the room to get online, the latency time to open a web page image is stretched to 120 milliseconds.
Driving out of the camp iron gate in the morning, drive forward along the black tar H1 main road. The shadow of the antenna tower in the rearview mirror gets smaller and smaller. Every time the Jeep’s tires roll 1 kilometer forward, the signal bars in the top right corner of the phone screen decrease by one. After driving 5 kilometers away, the needle on the speed test software is stuck dead at 12 megabits per second and won’t move.
Weeds and thorny bushes within 50 meters of both sides of the road have been cleared, and radio waves run forward along the flat tar road surface. Two off-road vehicles slow down to pass each other on the road, and 15 mobile phones in the carriages automatically refresh their backgrounds at the same time, instantly filling up the only 5 MHz narrowband channel of the roadside small base station.
| Camp Name | Measured Average Internet Speed | Hours Until Disconnection After Power Outage | How Far the Signal Can Fly |
|---|---|---|---|
| Skukuza | 85 megabits per second | 5 hours | 12 kilometers |
| Satara | 45 megabits per second | 3 hours | 8 kilometers |
| Lower Sabie | 38 megabits per second | 4 hours | 6 kilometers |
| Olifants | 15 megabits per second | 2 hours | 4 kilometers |
The car turns into an “S” starting sand path, wide tires kick up three-meter-high yellow sand, and the phone is completely disconnected. Beside the S100 dirt road 12 kilometers away from Satara camp, lion prides often take afternoon naps. Dozens of tour buses stall and turn off beside the dried-up riverbed, and the mobile phones of the dozens of people on the buses all show “No Service”.
The acacia tree crowns, five or six meters high, grow densely, and millions of thick leaves cleanly absorb the 900 MHz radio waves floating in the air. Walking to the bottom of the Sabie River valley at the lowest terrain, granite cliffs tens of meters high on both sides block the radio waves emitted by the outside base stations tightly.
During these 4 hours of staring at the dark grass looking for cheetahs, the phone’s battery drain speed is twice as fast as in the city. The network metal parts inside the machine desperately try to grab the weak -115 dBm waveband in the air, and full operation makes the mobile phone glass back cover feel hot to the touch.
- Network values measured hiding on the back side of a granite hill plunge by 80%
- Water vapor on the wide river surface will cause a 15-millisecond refraction delay for microwaves emitted by the antenna
- Encountering soaked plant leaves on rainy days will cause the penetration of 4G radio waves to drop by 40%
- Total disconnection time when driving into the bottom of a canyon often lasts as long as 45 minutes
The neighboring Sabi Sand Private Game Reserve is extremely expensive, and the internet treatment is completely different. Staying for one night for 20,000 Rand in a luxury thatched-roof wooden cottage, the roof is entirely hidden with 60 cm gray round dishes receiving satellite signals. The 2.4 GHz frequency emitted by the white router in the room fills the 150-square-meter suite with its own swimming pool.
A 15-meter-high steel pipe fake tree stands in the yard of the private camp. Inside the steel pipe painted with bark texture is a micro-transmitter dedicated to the very few rich tourists. An open-top Land Rover carrying 6 tourists drives out of the gate, and these 6 mobile phones monopolize an entire 20-megabit bandwidth exclusive wireless waveband.
At 8 PM, encountering a national power load shedding, the hundreds of miles of wilderness are too dark to see one’s hand. Four 12-volt old lead-acid batteries covered in dust are placed under the towers of small and medium camps. After enduring 30 minutes of power outage, the equipment forcibly shuts down the power-consuming 4G data channels, leaving only the old 2G channels for making emergency calls.
Olifants camp, built on a cliff top, is exposed to sun and wind all year round, and the plastic-shelled batteries have aged significantly. After 2 hours of power outage, the only remaining 3G signal within a 4-kilometer radius disappears on time. Tourists can only wait until 6 AM the next morning for generator power, when the phone receives 40 messages that couldn’t be sent last night in one go.
- Save a 300MB offline map pack in your phone before leaving the black tar road
- Fixing the network settings to 3G mode can save 20% of phone battery
- Carry a 10,000 mAh lithium battery power bank to deal with a whole day of safari
- After the camp’s old-style diesel generator starts with black smoke, you need to wait 15 minutes for the network equipment to restart
Data Consumption
Cape Town
The plane has just landed at Cape Town International Airport. The terminal duty-free shops are covered with Vodacom’s 5G signal. Casually clicking on the speed test software runs a 210Mbps downlink speed, running away with 120MB of data in a few seconds.
Pushing luggage to the outdoor ride-hailing point to call an Uber to Long Street in the city center. The 20-kilometer journey takes 25 minutes. Watching the screen from the driver accepting the order to getting in the car, refreshing the map uses 8MB of data.
The main urban area is sandwiched between Table Mountain and the harbor. Dense buildings and giant rocks will block the signal. Sitting at a corner of Kloof Street drinking coffee, the phone often jumps back and forth between 5G and LTE.
Going to Victoria & Alfred Waterfront plaza for dinner in the evening. Clicking on The Fork software to see the seafood graphic menu. Swiping through 15 high-definition dish pictures taken by a DSLR, the background quietly ate 45MB of cache.
Mobile phone QR code payment is extremely popular in South Africa. Buying a 40 Rand latte at the Old Biscuit Mill market on the weekend. Opening SnapScan to scan the QR code, an encrypted payment request costs 1.5MB of data.
Calling a car after being full to go to Camps Bay to watch the sunset. 7.5 kilometers of coastal road, with Google Maps open for traffic-avoidance navigation. The 20-minute drive costs nearly 18MB of quota.
| Cape Town High-Frequency Applications | Single Operation Action | Estimated Data Consumption | Details Supplement |
|---|---|---|---|
| Uber | Calling a car and finishing a 20-minute journey | 15MB – 20MB | Includes pickup route and driver location refresh |
| SnapScan / Zapper | Scanning a code to pay for a street coffee | 1.5MB – 2MB | Essential software for browsing markets and street shops as a credit card alternative |
| The Fork | Browsing a restaurant’s graphic homepage | 30MB – 50MB | Full of high-resolution dish pictures |
| Windguru | Checking the wind speed radar at the top of Table Mountain | 5MB – 8MB | Basis for checking whether the mountain cable car is open |
Taking the 360-degree rotating cable car up Table Mountain. The viewing platform at 1086 meters high has no free Wi-Fi. Taking a 15-second 1080P Instagram Reel toward the Atlantic and sending it out, finishing the progress bar uses 55MB.
The wind direction at the mountaintop changes randomly, and the cable car can stop at any time. Refreshing the weather software every half hour to see the wind speed map. Brushing a web page with dynamic wind direction arrows costs 6MB once. The queue for the downward cable car takes 40 minutes.
Bored in the queue, swipe through a few travelogues on YouTube. The player automatically switches to 5G network 1080P quality. After just 15 minutes of video playing, 350MB of data is gone.
Getting up early the next day to climb Lion’s Head. The 5-kilometer circular dirt road is extremely lacking in road signs. AllTrails is hooked throughout the hike to record the track. Tracking with a contour topographic map open, one hour consumes 25MB.
Driving all the way to Boulders Beach to see those three thousand plus African penguins. Holding the phone and having a 10-minute video call with the penguins. FaceTime high-definition video eats 15MB of data per minute.
- Turn off the phone’s built-in Wi-Fi assist function to prevent stealing data when the signal is poor
- Finish SnapScan credit card binding operations under the hotel’s 100-megabit fiber optics
- Photos taken at the top of Table Mountain should be saved and uploaded in bulk after going down; the 4G load at the mountaintop is extremely high
- Lock the YouTube mobile network playback quality at 480P
Internet speed in the city is so fast it’s easy to lower one’s guard. Encountering a power outage in Cape Town, the hotel’s backup generator starting will have a 3-minute network interruption period.
In these 180 seconds, the phone switched back to mobile data. iCloud took the opportunity to fiercely upload the 4K video of penguins just taken at the beach. In just 3 minutes of background operation, it forcefully ran through nearly 400MB.
Driving 80 kilometers east to Franschhoek Wine Valley. Taking the vintage wine tram through the wine estates. Century-old estate thick stone walls block the outside signal cleanly.
Checking Sauvignon Blanc vintage ratings in the tasting room. Using Vivino to scan the wine label picture and send it to the cloud for recognition. Sending an original wine label picture and then matching the return, checking once uses 8MB.
- There is a 15-kilometer “No Service” blind spot on the M65 road to the Cape of Good Hope
- Use paper wine lists to replace mobile phone scanning when browsing wine estates
- Turn off the permission for news software to pull breaking news with pictures in the background
Kruger National Park
Kruger covers nearly 20,000 square kilometers, with tar roads and dirt roads interlacing inside. When the car drives 5 kilometers out of the main camp, the 4G symbol in the top right corner of the phone screen immediately becomes E network or No Service.
Fiber-optic base stations cannot be built in the vast bushveld. Among the three local service providers, only Vodacom has built more than 50 communication towers in the reserve. Look for this one when applying for eSIM; buying the wrong card and wandering outside for 8 hours will result in complete loss of contact.
Staying in the Skukuza large main rest area, internet speed can run to 30Mbps. Sitting in the restaurant to send a few photos and make a voice call is no problem at all.
The camp gate is a signal watershed; the wheels roll over the speed bump and onto the S114 dirt road, and the internet speed immediately drops to around 15Kbps.
Opening a 2MB lion photo on the dirt road means waiting for 3 minutes. Guides shouting to each other rely entirely on VHF radios in the cars. The device in hand cannot send emojis, only send pure text on WhatsApp.
When identifying animals while playing, tourists like to keep the Kruger Explorer identification software open. It stores more than 700 high-definition wildlife pictures.
- Go to the hotel in Johannesburg and connect to fiber to download the 1.4GB offline pack
- Change the phone’s positioning permission to Only while using before driving
- Turn off the sighting coordinates network synchronization button inside the software
Syncing coordinates in the background secretly consumes a lot of data quota. The software pulls location information uploaded by more than 200 off-road vehicles every 10 minutes. Forcefully pulling data under 2G internet speed, the phone background runs data crazily, making the whole machine hot.
Standing on the Olifants camp cliff viewing platform, receiving a trace of weak 3G signal, and retrying ten times to send a 10-second 720P clip won’t go through.
Driving all day on a 35-degree Celsius day. When there is no internet, the phone searches for frequency bands at full load. A 3200mAh capacity battery won’t last until 2 PM.
- Switch the phone into Airplane Mode before leaving the camp at 5:30 AM
- If you really need to check identification data, briefly switch back to normal status to search for 3G bands
- Prepare a 1-meter-long braided charging cable in the car and plug it into the pickup truck’s cigarette lighter USB port
Driving to Lower Sabie or Satara rest areas, public Wi-Fi charges by time. Spending 50 Rand to buy a slip of paper with a password printed on it, containing only a 50MB quota. Sending and receiving a 500KB work email keeps reporting errors.
The eSIM package handled by your own phone is more reliable than the local area network bought with money at the camp. 8 PM is the most laggy time for the network at various camps. Tourists in more than 200 tents are all uploading animals they photographed during the day.
Break the habit of sending high-definition original images; a 15MB long-focus DSLR original image cannot be sent at all at 8 PM in the camp. Compressing it into a 300KB low-quality photo with photo editing software can be sent instantly.
Staying in a high-end luxury tent in Sabi Sand Private Reserve, the lobby usually has a dedicated 100M broadband line. Following an open-top Land Rover Defender into the bushes to find leopards, the device in hand regresses into a stand-alone game.
Going to the Punda Maria camp further north with desolate landscapes, you completely enter a no-network zone. Driving out for more than 100 kilometers along the highway, not a shadow of a communication tower is seen along the way.
- Ask for a paper physical map printed with rescue numbers at the airport car rental counter when picking up the car
- Take screenshots of hotel reservation PDF files in advance and save them in the local album
- Set a return countdown alarm on your watch before the camp gate closes at 5:30 PM
Data Management
Phone factory settings will secretly use about 500MB of data every day. Go to the cellular network settings to find the low data mode switch for iOS 17 or Android 14. After turning it on, the phone won’t automatically load a bunch of useless things in your pocket.
Camp networks often only have 2G signals. When someone sends a few high-definition photos of leopards, if WhatsApp auto-download isn’t turned off, 20MB of data is gone in an instant. Recording videos yourself consumes even more data; an iPhone 15 Pro recording a 3-minute 4K 60fps safari video takes up 1.2GB.
- Turn off media auto-download in WhatsApp storage and data
- Change photo album synchronization to Wi-Fi Only
- Stop app updates under cellular networks in the App Store
- Turn off the podcast auto-download latest episode function
Even with a weak 3G signal, iCloud will constantly upload photo thumbnails to the server. On the way to Skukuza camp, the signal is very poor, and repeated attempts by the phone to upload will consume a large amount of data packages. Going to settings and changing the network permission of the photo app to Wi-Fi only can save a lot of data.
After managing the photo album, deal with the maps. Google Maps supports downloading 120,000 square kilometers of offline packs. Marking all of Kruger and Sabi Sand inside uses about 250MB of phone memory. The map pack for the narrow strip from Cape Town city center to Cape of Good Hope takes 450MB.
These map caches are valid for a whole year. When driving on jungle dirt roads without internet, the phone relies only on satellite positioning and doesn’t use any data; the blue dot representing the car gives very accurate directions.
- Download area maps in advance under the hotel’s 100-megabit Wi-Fi
- Delete old map caches used in other countries before
- Download Maps.me as a backup
- Free up 2GB of space on the phone specifically for route data
After checking the map, casually swipe the phone a few times, and Instagram will pre-cache the next 5 to 10 videos. Staring at a lion photo for a little while, the background has already quietly downloaded 80MB of subsequent content. Go to settings and turn on its data saver mode.
Swiping TikTok for 10 minutes costs more than 150MB. Turn off all background refreshes for non-communication software in the system settings. After saving the quota on the phone side, opening a hotspot for the computer is another large consumption gap.
A MacBook connecting to an iPhone will think it’s connected to home fiber optics, and the system often directly runs to download 3GB of security updates. Wanting to edit photos taken during the day at the camp at night, as long as Lightroom is connected to the internet, syncing 50 30MB RAW original images directly runs through 1.5GB of data.
- Pause various cloud drive client synchronizations on the computer
- Turn on metered network restrictions for the laptop system
- Unplug the camera memory card and use a card reader to transfer photos
- Set the hotspot password complex so nearby devices don’t connect
Top eSIM Recommendations
RedEx
In the late dry season of Kruger National Park in October, drive into Paul Kruger Gate along the R536 highway. On the dirt road 15 kilometers after leaving Skukuza main camp, ordinary phone cards will completely disconnect for several hours. RedEx connects to the Vodacom 900MHz (Band 8) low-frequency signal, which just manages to penetrate the dense bushes. The speed test software shows a download speed of 2.2Mbps and a Ping value of around 115 milliseconds.
Sending a 1.5MB video of a leopard cub to family in the car, the progress bar turns for 8 seconds and it’s out. Staying in a camp deep in Sabi Sands, the hotel Wi-Fi has no signal 20 meters outside the lobby. Sitting in an open-top Land Cruiser to see animals, the phone relies entirely on this card to catch weak 3G or HSPA+ radio waves. To avoid dropping the connection, you have to manually adjust some phone settings yourself.
- Turn off the automatic network selection option in the phone
- Manually select Vodacom as the operator network
- Turn on the data roaming switch in cellular networks
- Check if the APN is the code given when buying the card
- If 3G won’t load the web page, turn on airplane mode for 10 seconds and then turn it off
Cape Town’s terrain is much more complex, and the 1067-meter-high Table Mountain blocks radio waves from the Atlantic side. Driving along the Chapman’s Peak Drive M6 route, there are 114 sharp bends on the road. Driving into the semi-open tunnels in rock crevices, the altitude drops to 15 meters, and other people’s navigation all turns into gray grids. The iPhone 15 Pro Max with this card installed switched to the backup network within two seconds.
Clinging to the rock wall on the shaded side, the phone still has one bar of 4G. High-quality songs in Spotify haven’t lagged, and the 8.5 kilometers to Hout Bay on the Google Maps screen is still counting down normally. Turning into the Stellenbosch wine region, there are more than 150 wine estates on both sides of the R44 road. Delaire Graff estate’s 5-meter-deep wine cellar is built with 60 cm thick stones.
Drinking 2018 Shiraz wine in the wine cellar, take out the phone to check web pages. There are 3 ultra-high-definition oak barrel photos on the web page, and all are displayed in 4 seconds. Using various apps openly outside, there is a detailed account of data consumption.
- Downloading the complete offline map of South Africa requires 2.1GB of space
- Making a one-hour voice call on WhatsApp costs 35MB
- Sending an 1080P quality Instagram short video takes up 80MB
- Calling an Uber once and watching 20 minutes of route tracking is about 15MB
- Refreshing 50 pure text emails once in the mailbox costs 5MB
The latency to Johannesburg servers is 45 milliseconds, while to London servers it will soar to 160 milliseconds. These 160 milliseconds are completely unfelt when sending messages to call a car, but when playing shooting games by the campfire, there will be a 0.2-second delay in firing. Spending 24 dollars to buy a 10GB data pack, distributed over a 14-day itinerary, you can use 730MB per day.
At 6 AM in the hotel, connect to Wi-Fi to update the system and maps. When going out, turn off photo auto-cloud sync; 730MB is enough to open GPS positioning for 12 hours, send 4 15-second 720P videos, and then make a 20-minute FaceTime call. At 5:30 in the morning, the temperature is 8 degrees, and the guide parks the car by the S100 dirt road. In a pile of dry grass 12 meters away, a pride of lions is eating meat.
Six off-road vehicles are parked nearby, and more than 30 phones are all fighting for that one signal tower 18 kilometers away. Ordinary cards can’t even send messages, but the enterprise-grade channel lets your phone queue preferentially. Uploading a 3.2MB high-definition photo of a lioness, friends abroad receive it after 45 seconds. The flight lands at Cape Town International Airport gate A4, turn off airplane mode.
The phone connects to the internet in 12 seconds, popping up 7 messages and 1 hotel confirmation letter. Walking outside the terminal to Pick-up Zone B to call a car, a Toyota Corolla 1.2 kilometers away is caught in 5 seconds, driving over in 22 minutes for a fare of 185 Rand. Driving to Cape of Good Hope is 70 kilometers one way, well over 20 kilometers from the town’s base station. The phone regresses to two bars of 3G signal; opening Wikipedia to read Dias’s nautical diary, text loads in 8 seconds. If the phone has no internet, you can check according to the following.
- Is the phone memory left with less than 50MB
- Is the phone time aligned with the South Africa Johannesburg time zone
- Is there an activation code for this card in the mailbox
- Unplug and plug in the physical card once to prevent system conflicts
- Restart the phone to clear accumulated network junk data
Nomad
At two in the afternoon, the plane lands at Cape Town Airport (CPT) Terminal 2. The 5GB Nomad package QR code bought in advance for 15 dollars is lying in the mailbox. Standing by the luggage carousel and connecting to the airport’s free Wi-Fi, the card was installed in less than 3 minutes by scanning the code. Pushing the box out of the gate, MTN’s 4G signal popped up at the top of the phone.
Ran a speed test software, download speed 45Mbps. Clicked on Uber and called a Toyota Corolla to the hotel in Green Point. The 22-kilometer road charged 240 Rand, the car drove for 35 minutes, and keeping GPS open for navigation in the background used 15MB of data. There is a data pie chart in the App, saying 5105MB is left.
Turn on the phone’s hotspot, and a friend’s iPhone connected to the internet in 4 seconds. Driving to the seaside for seafood, she used the hotspot to download a 60MB high-definition English menu. With several devices all hooked on this card, data runs particularly fast.
- iPad in the bag secretly receiving 50 emails with attachments used 12MB
- Friend connecting to the hotspot and swiping 10 minutes of Instagram videos spent 150MB
- Backup phone secretly updating 3 small Apps in the background ran through 85MB
- Keeping Google Maps location sharing open for 1 hour took 5MB
Driving 40 kilometers south along the coast to Boulders Beach, the temperature rose to 32 degrees. Turning over several small mountains, the phone signal switched itself from MTN to Vodacom, with 3 bars left. Recorded a 45-second 1080P penguin-entering-water video, which took up 120MB of space. It lagged a few times when uploading to TikTok, taking 25 seconds to send.
Taking the cable car up the 1067-meter-high Table Mountain, the iron carriage and thick stones block the 4G signal completely. The phone falls back to the 3G network, and latency soars to 180 milliseconds. Sending a 2MB compressed landscape photo home, the screen turned in circles for 6 seconds. Wandering around the city and surrounding attractions, the internet speed in different places is roughly as follows.
| Speed Test Location | Connected Network | Network Signal | Download Speed | Upload Speed |
|---|---|---|---|---|
| Victoria & Alfred Waterfront | MTN | 4G | 55 Mbps | 22 Mbps |
| Next to Green Point Stadium | Vodacom | 4G | 48 Mbps | 18 Mbps |
| Boulders Beach Ticket Office | Vodacom | 3G | 12 Mbps | 4 Mbps |
| Halfway up Chapman’s Peak Drive | No Network | No Service | 0 | 0 |
Taking a plane to Kruger National Park 1900 kilometers away. 2.5 hours later landing at Skukuza Airport (SZK), walking out of that tarmac full of dirt, the phone can’t find 4G, barely hanging on with Vodacom’s 3G signal. Sitting on an open-top off-road vehicle and drilling into the H4-1 dirt road, driving 18 kilometers deep into the woods, eating a mouthful of yellow dust.
The 3G icon at the top of the phone is completely gone, leaving only the words “No Service.” For a full 40 minutes, a 10kb pure text WhatsApp message absolutely would not go out. When the off-road vehicle turned around and drove back, with 3 kilometers left to Lower Sabie main camp, the phone vibrated, and the messages stuck earlier all jumped out.
Sitting in the camp restaurant at 6 PM, the official Wi-Fi bought for 50 Rand is only 1Mbps tortoise speed. Switching back to the phone’s own data, finished watching a 12-minute 720P travel video on YouTube. Phone battery dropped by 8%, and the App background recorded this video burning 200MB of data. Data is limited, you have to watch it closely yourself.
When used to 4GB, a screen popup reminds only 20% is left. Opening the App and spending 9 dollars to buy a 3GB top-up pack, 10 seconds after paying, the number in the pie chart becomes 4096MB. Wanting to save the remaining data, there are several phone switches to watch closely.
- Turn off the phone album’s cloud backup function when there’s no Wi-Fi
- Download 50 songs for driving in Spotify in advance at the hotel
- Lock Netflix’s playback quality to the “Data Saver” level
- Turn off switches for several large games that steal data in the background
Flying back south from Kruger, drove 120 kilometers of highway along the Garden Route. Signal towers along the way are few and far between, and the phone switched back and forth between 3G and 4G 18 times. Constantly searching for the network makes the phone particularly hot; after driving for 4 hours, the battery dropped from 90% to 40%. The car drives into a desolate small town and the “E” network pops up on the screen, only manually adjusting the phone to find the network.
- Pull open the control center, light up airplane mode, wait 10 seconds and then turn it off
- Go into phone settings and turn off automatic network selection, click “MTN” yourself
- Check if the APN in cellular networks says “globaldata”
Holafly
At 8 AM, the temperature at Camps Bay beach is 15 degrees. The 5-day Holafly package bought for 27 dollars was automatically activated during the layover in Johannesburg. The phone is connected to MTN’s 4G network, full signal. The speed test software needle is stuck at 65Mbps downlink speed and hasn’t moved.
Took an action camera surfing in the icy Atlantic for half an hour, shot 4.2GB of 4K original footage. Opening the cloud drive on shore to upload files, the progress bar finished running within 12 minutes. Don’t go calculating how much data is left, swipe social software openly. The built-in data statistics panel says 2.8GB was run in one morning.
Taking the 360-degree cable car up the 1067-meter-high Table Mountain, giant rocks block radio waves. The bottom layer of the phone automatically switched from MTN to the Vodacom network, and speed dropped to 48Mbps. With 30 km/h winds blowing at the mountaintop, click FaceTime to make a video call to friends in Europe.
45 minutes of 1080P high-definition call without any lag, even the wind can be heard clearly. Hanging up and looking, 850MB of data was burned. It works really well, but using just a little more hits the usage red line set by local operators.
- Watching a one-hour 4K quality Netflix documentary eats 7.2GB
- Syncing 100 12-megapixel photos in the background takes up 500MB
- Playing 3 rounds of online games at high frame rate uses 165MB
- Updating an iOS system file pack across versions exceeds 3.5GB
Browsing Victoria & Alfred Waterfront plaza at 3:30 PM, internet speed slows down. Using up 3.5GB in a single day hit the speed limit wall. The operator forcefully reduces the internet speed to a 2G level of 256kbps. Web page images are half mosaic, and sending pure text WhatsApp takes two seconds of turning circles.
Clicking on a video site to watch a 720P Cape Town seafood restaurant exploration, it took 15 seconds for the picture to come out. This tortoise speed state has to be endured until midnight 12 AM to be lifted, when after midnight the internet speed returns to dozens of megabits. The card purchase page writes very clearly, hotspot sharing is completely not allowed.
Forcefully opening a mobile phone hotspot in a street coffee shop, the iPad on the table absolutely cannot find the name. A gray line of words floats in the middle of the screen saying contact the operator to enable. The number of connections is stuck at 0 and won’t move. Taking a plane to Kruger National Park 1900 kilometers away, the base stations all changed.
In the largest Skukuza camp, the Wi-Fi password paper sold at the front desk is 100 Rand per hour. The phone automatically clung to the MTN 800MHz (Band 20) base station unique to remote areas. Download dropped to 12Mbps. Driving the rented Ford pickup at 30 km/h on the H1-2 tar road to find animals.
Encountering network disconnection and crash, you have to manually change system parameters to save the situation.
- Turn off the data roaming switch, count for 5 seconds and then reopen it
- Delete the extra APN letters and only leave that line given officially
- Force the phone to lock on 3G and don’t go blindly searching for weak 4G radio waves
- Shut down and wait 20 seconds for the motherboard capacitors to discharge completely and then restart
At 7:30 PM hiding in the camp wooden cottage, only hyenas are howling outside. Changing the 64GB memory card for the DSLR, connecting the card reader to the phone to transfer 1.8GB of high-definition elephant photos. The 12Mbps speed is agonizingly slow, and the cloud backup forcefully dragged for more than two hours to finish uploading.
After three days, driving west along the Garden Route to Knysna for dinner. Ordered a portion of 250 Rand grilled oysters, and the 5G icon suddenly popped up in the top right corner of the screen. The transmitter tower is only 400 meters away from the restaurant, and the speed test software pulled to 120Mbps in one go.
To let the phone jump between different base stations without disconnecting, fix several settings before going out.
- The low data mode switch in system settings must remain off
- Allow background App refresh so chat software stays online all the time
- Set network operator selection to automatic mode to let it find the network itself