This Internet access service enables you to enjoy browsing with 4G LTE data communication terminals and other devices.

Basic charges ¥500/month Application Required


  • You can access the Internet using a global IP address (IPv4/IPv6). [1]
  • In addition to monthly usage charges, communication charges will be incurred depending on the volume of communications in the current month.
Monthly charge ¥500
Communication charge ¥0.60/KB [2]
  • [1]Depending on the conditions, IPv6 communications may not be available. (IPv4 connection is used in CDMA 1X, overseas, and other areas)
    To use IPv6 communications with iPhone 5 or iPad, an update to iOS7 is required.IPv6 is not supported by Fx0.
  • [2]Communication charges for the Internet service with mobile phones are calculated based on the amount of data transmitted and received. Charges are not calculated based on the connection time. Use of contents may incur additional information charges. Also, packet communication charges are incurred regardless of whether information charges are incurred.

Eligible models

  • 4G LTE Smartphones
  • iPhone (excluding iPhone 4S)
  • 4G LTE Tablet
  • 4G LTE Featurephone
  • iPad
  • 4G LTE capable PC
  • Fx0(IPv6 is not supported)

Applicable period

The month in which application is made

How to use

Using LTE NET for DATA on a smartphone

For iOS (iPhone, iPad)(in Japanese only)

  • For Android
  • (1) Apply for LTE NET for DATA
  • (2) Apply for LTE NET *(To apply, call 157)
    * If you do not apply for LTE NET, mobile e-mail ( is not available.
  • (3) From the "Settings" menu, change the access point name (APN) to "LTE NET for DATA"
    [Ex.] For SCL 21
    "Settings" -> "Other Settings" -> "Mobile Networks" -> "APN" -> "LTE NET for DATA" *
    * The menu configuration may differ depending on your model. Change the access point name (APN) to "LTE NET for DATA".

Returning a smartphone to LTE NET use

For iOS (iPhone, iPad)(in Japanese only)

  • For Android
  • (1) From the "Settings" menu, change the access point name (APN) to "LTE NET"
    [Ex.] For SCL 21
    "Settings" -> "Other Settings" -> "Mobile Networks" -> "APN" -> "LTE NET" *
    * The menu configuration may differ depending on your model. Change the access point name (APN) to "LTE NET".

APN Setting

  • APN Setting for LTE NET for DATA [3]
Authentication typeCHAP
  • [3]KDDI cannot guarantee the operations of devices that are not sold by KDDI.
    Make sure to confirm the precautions when using an au IC card in devices not sold by KDDI.

Communication option

WiMAX 2+ Option

If you use a model that supports WiMAX 2+ and apply for LTE NET for DATA, you can use WiMAX 2+ data communication as well as the 4G LTE network.

Basic charges Not required
Applicable period The month in which application is made
  • A connection is made to the network that KDDI deems has the least amount of traffic, in accordance to traffic and other conditions. When using 4G LTE or WiMAX 2+, "4G" appears on the screen display of the smartphone or tablet.

For details on WiMAX 2+ and supported models, check the following.

WiMAX 2+ Option



  • If you subscribe to LTE NET for DATA only, a mobile phone email address ( cannot be used. To use the mobile phone email address, an application for LTE NET is required.
  • Packet communication charge applies even if data are not received correctly.
  • Some apps and content may not be available.
  • "Inbound Port 53 Blocking" and "Inbound Port 123 Blocking" are implemented as a countermeasure against DDoS attacks.
  • "Outbound Port25 Blocking" is implemented as an additional measure against unwanted mail.
  • Packet communication charge shown above is applicable only for use within Japan. See below for use outside Japan.

    Using overseas and international roaming service (au World Service)

Optimization of communication

LTE NET series packet communications may perform system optimization to improve the display speed of images.

Image file jpg
  • Optimization is the compression and conversion of images to the appropriate size for a smartphone screen. Compressed and converted data can not be restored.
  • HTTPS communications and files with email attachments are not optimized.
  • Customers who do not need communication optimization can contact the Customer Center (157) to have optimization cancelled.
  • By phoneOpen 9:00 – 20:00

    • English

      0120-959-472(Toll Free)

    • Portuguese

      0120-959-473(Toll Free)

    • Chinese

      0120-959-476(Toll Free)

    • Korean

      0120-959-478(Toll Free)

    • Tagalog

      0120-933-952(Toll Free)

    • Vietnamese

      0120-933-961(Toll Free)

    • Japanese
      about au mobile services

      157(Toll Free)from au phones

      0077-7-111(Toll Free)

      about Internet services
      Contract / Fee / Billing

      0077-7084(Toll Free)

      Connection setting / failure

      0077-777(Toll Free)