RedEx
RedEx provides Japan eSIM packages oriented toward short-term travel, commonly available in three specifications: 3GB, 5GB, and 10GB for 3 days, with prices typically ranging from $4–$9. The network accesses Japan’s NTT Docomo or SoftBank, and 4G download speeds in cities like Tokyo, Osaka, and Kyoto generally reach 60–120Mbps.
Installation is done via QR code after purchase, and activation is completed in 30–60 seconds once the phone connects to the network. Most packages do not require identity information, making them suitable for 3-day city travelers, weekend visitors, or layover users.
RedEx’s Japan eSIM primarily targets tourists staying for 2–4 days, such as a weekend trip to Tokyo or a short excursion to Osaka. For such itineraries, users typically consume 1GB–2GB of data per day, mainly for map navigation, social media, and video browsing.
When using the Docomo network in downtown Tokyo, download speeds are usually 70–110Mbps, while 5G areas can reach 120–200Mbps. Signal coverage is stable in subway stations, commercial districts, and hotel areas.
Network Access: Uses NTT Docomo or SoftBank networks, with a population coverage in Japan of approximately 95–99%
Network Speed: Download speeds of 60–120Mbps are common in Tokyo and Osaka urban areas
5G Support: 5G networks can be accessed in cities such as Tokyo, Yokohama, Osaka, and Nagoya
Package Specifications: Commonly 3GB / 5GB / 10GB (3-day validity)
Package Cycle: 72 hours starting from the first connection to the network
Price Range: 3-day packages are typically $4–$9
Installation Method: Scan the QR code to install the eSIM, taking approximately 30–60 seconds
Identity Information: Most packages do not require the submission of a passport or identity info
Device Support: Supports iPhone XS and newer models, as well as most eSIM-compatible Android phones
Suitable Target Users: 3-day city travelers in Japan (Tokyo / Osaka / Kyoto)
Usage Scenarios: Map navigation, transportation queries, social media, short video browsing
Data Suggestion: Choosing a 5GB package generally meets the 3-day needs of average travelers
NTT Docomo
NTT Docomo is one of Japan’s largest mobile operators, with approximately 88 million mobile users. The network covers about 99% of the populated areas in Japan, with over 20,000 5G base stations across cities like Tokyo, Osaka, Kyoto, and Nagoya. 4G download speeds in urban areas are typically 80–150Mbps, while 5G networks can reach 150–300Mbps. Most Japan eSIM service providers access the Docomo network to provide data packages; therefore, for short-term travel in Japan, the Docomo network usually provides stable signal coverage and high data speeds.
Operator Type: One of Japan’s three major mobile operators, with approximately 88 million mobile users
Network Coverage: Japan population coverage is approximately 99%
4G Speed: Average download speed in urban areas is 80–150Mbps
5G Speed: Download speed in urban areas is approximately 150–300Mbps
5G Covered Cities: Tokyo, Osaka, Nagoya, Yokohama, Fukuoka
Base Station Scale: Number of 5G base stations in Japan exceeds 20,000
Network Stability: Signal coverage is stable in subways, commercial districts, and airports
Package Form: Official packages coexist with MVNO data packages
Price Range: Official packages are usually $15–$30 for several GB of data
Method of Use: Available via both eSIM and physical SIM
Device Support: Supports most 4G / 5G smartphones
Suitable Target Users: Japan travelers who need stable networking and wide signal coverage
Rakuten Mobile
Rakuten Mobile is Japan’s fourth-largest mobile operator, with a user base of approximately 7 million. Its self-built 4G/5G network covers 96% of the populated areas in Japan, with download speeds in cities like Tokyo, Osaka, and Nagoya typically ranging from 50–120Mbps. When the signal is insufficient, the device automatically switches to the KDDI roaming network to maintain connectivity. Rakuten eSIM supports online activation, with an installation time of about 1 minute. Compared to traditional operator packages, Rakuten’s data packages are usually 20–40% cheaper.
Rakuten Mobile supports both eSIM and physical SIM, and the installation process for both is similar. After purchasing an eSIM, scan the QR code with your phone to download the operator profile; installation is generally completed in 30–60 seconds. Data usage can begin once the network connection is successful.
Operator Type: Japan’s fourth-largest mobile operator, with a user scale of approximately 7 million
Network Coverage: Japan population coverage is approximately 96%
Network Structure: Rakuten self-built network + KDDI roaming network
4G Speed: Download speed in urban areas is approximately 50–100Mbps
5G Speed: Some urban areas can reach 100–200Mbps
5G Covered Cities: Tokyo, Osaka, Nagoya, Yokohama, Kobe
Package Price: Usually 20–40% lower than traditional operators
Installation Method: Scan the QR code to install the eSIM, taking approximately 30–60 seconds
Device Support: Supports iPhone and most eSIM-compatible Android phones
Method of Use: Both eSIM and physical SIM can be activated
Suitable Target Users: Short-term or medium-term users in Japan who need lower-priced data packages
Sakura Mobile
Sakura Mobile is a Tokyo-based communication service provider that mainly provides SIM and eSIM data packages for tourists in Japan. Its network accesses NTT Docomo, with a population coverage of approximately 99%. In urban areas like Tokyo, Osaka, and Kyoto, 4G download speeds are typically 60–120Mbps, and 5G networks can reach 120–200Mbps.
Short-term travel packages commonly have validities of 3 days, 5 days, or 7 days. A 3-day data package is usually priced at $10–$15, supporting online purchase and eSIM installation within 1 minute via QR code.
Operator Network: Uses the NTT Docomo network
Network Coverage: Japan population coverage is approximately 99%
4G Speed: Download speed in urban areas is approximately 60–120Mbps
5G Speed: Some areas can reach 120–200Mbps
Package Cycle: Commonly 3 days / 5 days / 7 days
Package Data: Commonly 3GB / 5GB / Unlimited data (speed limited)
Price Range: 3-day packages are typically $10–$15
Installation Method: Scan the QR code to install the eSIM, taking approximately 30–60 seconds
Customer Support: Provides English customer service and online support
Device Support: Supports iPhone XS and newer models, as well as most eSIM Android phones
Suitable Target Users: 3–7 day travelers in Japan (Tokyo / Osaka / Kyoto itineraries)
Mobal
Mobal is a Japanese communication service provider for international tourists and students, headquartered in Tokyo. Its data service accesses the NTT Docomo network, with a population coverage of approximately 99%. In urban areas like Tokyo, Osaka, and Kyoto, 4G download speeds are typically 60–120Mbps, and 5G networks can reach 120–200Mbps. Mobal provides both eSIM and physical SIM formats, with short-term packages commonly valid for 3 days, 7 days, or 15 days.
A 3-day data package is usually priced at $12–$18. After purchasing online, users receive an email containing the eSIM QR code and installation instructions. Scan the QR code in the phone’s network settings to download the profile; installation time is generally 30 seconds to 1 minute. After connecting to the network, the package cycle is calculated based on 72 hours.
Operator Network: Uses the NTT Docomo network
Network Coverage: Japan population coverage is approximately 99%
4G Speed: Download speed in urban areas is approximately 60–120Mbps
5G Speed: Some urban areas can reach 120–200Mbps
Package Cycle: Commonly 3 days / 7 days / 15 days
Package Data: Commonly 3GB / 5GB / 10GB
Price Range: 3-day packages are typically $12–$18
Installation Method: Scan the QR code to install the eSIM, taking approximately 30–60 seconds
Device Support: Supports iPhone XS and newer models, as well as most eSIM Android phones
Customer Support: Provides English customer service and online support
Suitable Target Users: Short-term travelers and international students in Japan
IIJmio
IIJmio is a well-known Japanese MVNO communication service provider operated by Internet Initiative Japan, with a mobile user scale of approximately 2 million. The network accesses NTT Docomo and KDDI base station systems, with a Japan population coverage of approximately 98–99%. In urban areas like Tokyo, Osaka, and Nagoya, 4G download speeds are typically 40–100Mbps, and 5G areas can reach 100–180Mbps. IIJmio supports eSIM and physical SIM, with common data packages ranging from 2GB–20GB/month, and monthly fees typically between ¥850–¥2000 (about $6–$14).
Common monthly data packages include 2GB, 5GB, 10GB, and 20GB. For example, the 5GB package monthly fee is about ¥990, and the 10GB package is around ¥1500. After purchasing on the official website, users can obtain the eSIM profile QR code, scan it in the phone’s settings interface to download the network configuration, and start using data once connected.
Operator Type: Japanese MVNO operator, with approximately 2 million mobile users
Network Access: Uses NTT Docomo and KDDI networks
Network Coverage: Japan population coverage is approximately 98–99%
4G Speed: Download speed in urban areas is approximately 40–100Mbps
5G Speed: Some areas can reach 100–180Mbps
Package Structure: Common 2GB / 5GB / 10GB / 20GB monthly packages
Price Range: Monthly fee is approximately ¥850–¥2000 ($6–$14)
Installation Method: Scan the QR code to install the eSIM, taking approximately 30–60 seconds
Device Support: Supports most 4G / 5G smartphones
Method of Use: Supports both eSIM and physical SIM
Suitable Target Users: Users staying or living in Japan for the long term