PREMIUM 4G(R) Maximum data rate of 844 Mbps *1 *2 for receiving Maximum data rate of 75 Mbps*2 for sending notice1 notice2 notice2
Maximum data rate of 844 Mbps *1 *2 for receiving Maximum data rate of 75 Mbps*2 for sending
  1. The maximum data rate of 844 Mbps for receiving is only available in some areas. For details, please see Service Area. Transmission speeds are theoretical maximums and do not indicate actual rates. Services provided on a best-effort basis. Speeds may vary depending on network traffic or transmission environments.
  2. In the case of iPhone XS, iPhone XS Max and iPhone XR.

The effective speeds for receiving are 88 to 146 Mbps.

  • Effective speeds refer to the speeds within the range determined by the half of all receiving speeds measured in 10 cities in Japan based on the "Guidelines for the Effective Speed... (abbreviated name)" * drawn up by Ministry of Internal Affairs and Communications that is nearest to the median value.
    • Guidelines for the Effective Speed Measurement Method of Internet Connection Services Provided by Mobile Telecommunications Carriers and Information Providing Method, etc. for Users
  • These are the results of measurement using an iOS compatible model.
  • These measurement results are for 10 cities in Japan, so the effective speeds may differ depending on your location, timing, and communications environment of use.
  • For the specific numerical values, etc., see Effective Speed Measurement Results (in Japanese only).



The voice call service implemented with NTT DOCOMO's robust LTE network*3

See details
(in Japanese only)

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Check the Service Area

Information on the nationwide service area for iPhone.

See details


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Check the subway stations and sections between stations where you can use your iPhone.

See details
(in Japanese only)

docomo Wi-Fi

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Search for docomo Wi-Fi service area information in Japan and overseas.

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(in Japanese only)

International Service*4

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Search for service areas and communications charges for using your iPhone overseas (International roaming) or for making calls overseas (International calls) from Japan.

See details

  1. Not compatible with Video Call.
  2. Information on the international service areas will be updated over time.


Image of Tethering

Access the Internet from an external device (PC or game console, etc.) even when you are on the go.
There are no additional charges for the service.

  • Packet communications charges may become high when you are using tethering. We therefore recommend using packet flat-rate services.

Tethering (in Japanese only)

  • Apple, the Apple Logo, Apple Watch, iPad, iPhone are trademarks of Apple Inc., registered in the U.S. and other countries. The iPhone trademark is used under license from AiPhone Co., Ltd. App Store, AppleCare, iCloud are service marks of Apple Inc., registered in the U.S. and other countries. TM and © 2019 Apple Inc. All rights reserved.
  • PREMIUM 4G and the logo are registered trademarks of NTT DOCOMO, INC.
  • Packet flat-rate services do not apply to packet communications with international roaming, etc.
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