Packet transmission

Packet transmission

  1. Packet transmission charges are charged on the basis of the quantity of data packets transmitted (one packet = 128 bytes). Therefore, as in the case of accessing a website with images, transmitting/receiving E-mail with an attached file, and downloading data, the larger the volume of data transmitted is, the more expensive the transmission charges become. If the transmission charges become excessively expensive, there may be some cases in which the line will be temporarily suspended.
  2. As Internet use including viewing of websites, etc., can cause expensive packet transmission charges in a short period of time, it is highly recommended that customers sign up for packet transmission discount services such as "IS Flat" and "LTE Flat". Note that all discount services apply only to use in Japan.
  3. Even when data is not received properly due to reception conditions or content of data, packet transmission charges may still be charged.
  4. Because packets are transmitted on a "best effort" basis, transmission rates fluctuate depending on the congestion level of the line used.
  5. With a model compatible with "WIN Single-Teigaku WiMAX" or "WIN Single-Teigaku," a smartphone, specific models such as PHOTO-U, or a model with the maximum limit set for PC data communication payment, the transmission rate will be automatically slowed down depending on the congestion level of the line used if a huge volume of data is transmitted as with video file attachments or file downloads, or if data is transmitted continuously as with streaming, video playback, etc., in order to prevent an excessive load from being placed on the network. In such cases, please be aware that there may be occurrences in which it takes time for transmission to be completed, video doesn't move smoothly, etc.
  6. In order to maintain quality of service and protect equipment, cutoff after being continuously connected for a certain period (24 hours or more), or to port restriction depending on network conditions.
  7. For LTE compatible smartphones, tablets, and LTE Flat for DATA (m), if the total amount of communications of the month exceeds the data quantity for that month, the maximum communication speed until the end of that month will be limited to 128 kbps. The communication speed constraint will be removed on the first day of the following month.
  8. If the total amount of WiMAX 2+ communications and 4G LTE communications with a WiMAX 2+ router exceeds 7GB in a month, the maximum communication speed until the end of that month will be restricted to 128 kbps. The communication speed restriction will be removed on the first day of the following month.
  9. For a "+WiMAX" equipped smartphone and DATA08, if the transmission volume exceeds 3GB during the same month, the transmission velocity using 3G transmission will be limited to the maximum velocity of 128kbps until the end of the month (Until September 2012, this limitation will not be applied if the velocity exceeds 5GB).Restriction on transmission rates will be terminated on the first day of the next month on a first-come, first-served basis.
  10. Packet transmission using IS01 is not possible in the 144 kbps maximum reception rate area. Refer to the 3G icon to determine if use is possible or not.
  11. Smartphones are constantly connected to the Internet and may upload/download information automatically under application control, which can result in high packet transmission charges. Discount services for packet transmission, such as IS NET Course, IS Flat, LTE NET, LTE Flat, and Flat-rate Data are strongly recommended.

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Internet connection services

  1. When using Internet connection services with a mobile phone or smartphone alone, it is necessary to sign up for EZ WIN Course, IS NET Course, au.NET, LTE NET, or LTE NET for DATA. It is also necessary to use a model compatible with the services in question. For IS02 and E30HT only, it is possible to connect to the Internet using a provider that supports PacketWIN.
    For details about PHOTO-U, PHOTO-U TV, and ANSHIN GPS, refer to the page of each device.

  2. For WIN, when using Internet connection services with a smartphone alone without applying for the IS NET course, or for Wi-Fi/USB tethering on a +WiMAX equipped smartphone, or when using Internet connection services with a smartphone alone without applying for the IS NET course, or for Wi-Fi/USB tethering or SMS (i) on a +WiMAX equipped smartphone (ISW13HT, ISW16SH, ISW13F, URBANOPROGRESSO, ISW11SC, ISW11F, ISW11K, ISW11M, ISW12HT, ISW11HT) via IS NET, au.NET will be applied, with a monthly charge of ¥500. Wi-Fi/USB/PC usage on the IS02 and E30HT will automatically be charged for au.NET usage at ¥500/month regardless of IS NET application.
  3. WiMAX communication using a + smartphone equipped WiMAX (ISW13HT, ISW16SH, ISW13F, URBANOPROGRESSO, ISW11SC, ISW11F, ISW11K, ISW11M, ISW12HT, ISW11HT) will be charged ¥500/month for +WiMAX use. The monthly +WiMAX charge is waived for the month of cellular phone purchase and the following month. WiMAX packet transmission charges are calculated as stand-alone smartphone packet transmission charges, in the same way as packet transmissions using CDMA 1X WIN.
  4. When customers sign up for the EZ WIN course, they will automatically be signed up for the IS NET course. The IS NET course is applied for months in which packet transmission via an Internet connection using a smartphone alone takes place, and for other months the EZ WIN course is applied, so that there is no doubling up of fixed charges. When customers sign up for or withdraw from IS NET or EZ WIN during months when IS NET is applied, the monthly charge cannot be calculated on a per diem basis.
  5. When data transmission between a computer, PDA or car navigation system and an au mobile phone (PC-connected data transmission) takes place, or connection to the Internet is made using DATA01, DATA02, Wi-Fi WALKER (DATA05, DATA06,DATA08W), DATA07, W07K, W06K, W05K, W04K, the connection will be via au.NET or a PacketWIN compatible provider. Use of a PacketWIN compatible provider may incur separate monthly provider charges and transmission charges. Compatible models and monthly charges differ depending on the provider. Please check with the provider for details.
    • * Smartphones (excluding IS02 and E30HT), PT001, mamorino, and A101K are not compatible with PC-connected data transmission.

  6. If, due to model change, you are using IS NET course and LTE NET during the same month, the basic monthly charge for IS NET course will prevail.

    <CDMA 1X WIN compatible models (excluding smartphones)>[1]〉

      Monthly Charges EZweb/E-mail transmission charges [2]
    EZ WIN Course ¥300 per month ¥0.2/packet

    <Smartphones [1]>

      Monthly Charges Packet transmission charge when using a smartphone alone [3]
    IS NET course ¥300 per month ¥0.2/packet
    LTE NET ¥300 per month ¥0.6 per KB
    LTE NET for DATA ¥500 per month ¥0.6 per KB

    <au.NET [1]>

      Model Monthly charges Packet transmission charges
    au.NET DATA0Series (except for W02H) ¥500 [4]

    Packet transmission charges for each price plan
    Smartphone used alone: Max Amount including Wi-Fi, USB tethering on +Smartphone equipped WiMAX and on LTE smartphone ¥0.2/packet [5]
    PC data transmission via IS02 or E30HT, and CDMA 1X WIN compatible models other than those listed above ¥0.1/packet [5]
    • [1] When used in Japan
    • [2] Please see the Price plans section for details on packet transmission charges when using Unlimited Voice Call Plan (mobile phone with data), Unlimited Voice Call Plan (mobile phone), Plan E Simple/Plan F (IS) Simple/Plan E/Plan F (IS).
      Price Plan List
    • [3] E-mail transmission and reception using a smartphone alone is treated as a stand-alone packet transmission charge. Packet transmission on a smartphone equipped WiMAX and on LTE smartphone using Wi-Fi/USB tethering is also treated as a stand-alone packet transmission charge.
    • [4] Billing is for months of au.NET use (month when there were packet transmission charges) only.
    • [5] When customers are signed up for packet transmission flat rates/discount services, packet transmission charges will be calculated based on these services.
  7. When a WIN is used without applying for the IS NET course, Internet access is automatically handled via au.NET. As a result, packet transmission will occur even if application for IS NET has not been made (except when data transmission has been disabled).
  8. EZweb services (viewing of EZweb content, EZ apps, etc.) cannot be used with a smartphone. For this reason, some pages with URLs linked to EZweb content via E-mail, etc., cannot be viewed.
  9. When the customer switches from an EZ WIN mobile phone to a smartphone, or adds a smartphone, withdrawal from EZweb apps and EZweb sites, cancellation of Melody Call, etc., do not take place automatically. Customers are requested to withdraw from or cancel unnecessary fee-based apps and sites in advance. Smartphones supporting au ID, however, can withdraw from such apps and sites by accessing Support Information on the au Portable Web site, using the smartphone browser.
  10. All packet transmissions (3G transmissions) using smartphones take place through connection to the Internet, including website viewing, downloading, application transmission, E-mail/MMS transmission and reception, and packet transmission charges are billed for these transmissions. E-mail reception that is free of charge with the EZ WIN course, including important notification E-mail and Bill on WEB notification E-mail, Hot Info is not free of charge when using a smartphone. Smartphones which do not support EZ WIN E-mail cannot receive important notification E-mail. Smartphones which do support EZ WIN E-mail and are under Plan E Simple/Plan E contracts cannot send or receive EZ WIN E-mail/MMS for free, and must pay packet transmission charges. (The IS NET course is required for the use of EZ WIN E-mail.) Web browsing for a disasterrelated message board for LTE is provided at no cost.
  11. To prevent network congestion, transmission rates are restricted as shown below:
      Criterion Restricted period
    EZ WIN／S NET course Customers who used more than 3 million packets in total over the three most recent days (not including the day on which the restriction is applied) All day
    LTE NET/
    LTE NET for DATA(*)    		 Customers who used more than 3 GB packets in total over the three most recent days (not including the day on which the restriction is applied) All day
    • * Data quantity purchased with Data Charge is also applicable to the restriction.
  12. Transmission using EZ apps is subject to a daily packet limit.
    • * Unlimited use of certain EZ apps is available when using K011, F001, URBANO AFFARE, T008, K009, CA007, S007, T007, S006, T006, SH011, K007, PT002, G'zOneTYPE-X, CA006, SH010, S005, T005, SH009, URBANO MOND, beskey, SA002, CA005, S003, SH008, T004, S004, SH007, SH006, URBANO BARONE, BRAVIA® Phone U1, T003, G11, X-RAY, LIGHT POOL.
  13. When an application for Internet Connection Service is made, the customer is automatically deemed to have agreed to receive "Hot Info" (advertising information service), which the customer may cancel at any time later.

  14. Initial setup may be required if the au IC-Card is replaced in the smartphone. For detailed information, please refer to "Use of au IC card".

    Use of au IC card

  15. After changing mobile phones, there may be some cases in which services used with a former model (Contents, functions set for au mobile phone, etc.) cannot be used with a new model.

  16. To use the Charged Information Service (including purchase of products), customers need to consent to the following:

    1. (1)Before using charged information, customers are required to conclude the Charged Information Service Use Contract with each service provider (SP) through customers' au mobile phones.
    2. (2)When the Charged Information Services are used (including purchase of products) through an au mobile phone, the charges are collected by KDDI on behalf of SPs. The charges are billed together with monthly telephone charges.
    3. (3)Under any circumstances, a customer who has signed up for the au mobile phone is liable for any transmission and information charges for services used through the au mobile phone.
    4. (4)Under no circumstances can the obligation of customers to pay information charges under the contract with SPs be evaded, even when customers could not use Internet Connection services for some reason.
    5. (5)Any dispute related to information provided by SP and/or information charges shall be settled between the customer and such SP. The customer agrees that they will not demand anything from or make a complaint against KDDI.
    6. (6)KDDI provides SPs with ID numbers of customers determined when concluding an EZweb service contract.
    7. (7)KDDI sets a limit on monthly information charges payable by each customer depending on the number of subscription years and the age of the customer.
    8. (8)If a customer fails to pay information charges, the provision of Charged Information Service may be suspended, and information on the customer (such as contact number) may be notified to the SP.
    9. (9)In the event the customer suffers damage or loss as a result of actions by the information provider, the service provider shall bear responsibility for compensation, up to an amount equivalent to the charges for service usage. This limit, however, does not apply in cases of deliberate action or excessive or unusual damage.
  17. By making au.NET transmission settings to your connection devices, au.NET can be used without the need for submitting an application.

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Packet transmission charge discount service

  1. For packet transmission discount service, there is difference between LTE and CDMA 1X WIN. For packet transmission discount service available to LTE, please refer to "Price Plan".

    Price Plan List

  2. Subscribers to any of the discount plans may not use the free calling time set by each price plan to cover packet transmission charges.
  3. Customers may not sign up for packet transmission charge discount services if they use Plan E Simple/Plan F (IS) Simple/Plan E/Plan F (IS).
  4. If the packet transmission charge discount service is canceled or suspended, the fixed charges cannot be calculated on a per diem basis.
  5. The maximum payment does not apply to tethering transmission on +WiMAX-equipped Smartphone and on LTE smartphone as well as data transmissions via PC, PDA, car navigation systems, etc. It applies only to EZweb, E-mail, and PC site viewer. (This is not applicable to some models). Information charges may also be charged separately for the content used.
  6. If customers apply for the packet transmission charge discount service at the same time as signing up for an au mobile subscription, resuming subscription, or changing systems, the service becomes available on the day of application. (The fixed charges and available free transmissions are calculated on a per diem basis.) However, when a subscription is resumed during the same month it is suspended, the discount service used until the suspension applies for the month, and the new discount service chosen at the time of resumption applies from the following month. When the system is changed to CDMA 1X WIN or CDMA 1X, the discount service used under the former system applies until the day before an application is made for the system alteration. (The fixed charges and available free transmissions are calculated on a per diem basis).
  7. If customers apply for another discount option later, in addition to the packet transmission charge discount service applied for as in "6". above, the newly added discount option can be made effective either in the month following application or the month of application at customers' discretion. (When this application for an additional discount option is made in the same month as signing up for an au mobile subscription or changing systems, the fixed charges and available free transmissions are calculated on a per diem basis.) If one discount option is replaced with another discount option under the same CDMA 1X WIN or CDMA 1X system, the new discount option becomes effective the following month.

  8. When customers simultaneously switch from Unlimited Voice Call Plan (mobile phone with data)/Unlimited Voice Call Plan (mobile phone)/Plan E Simple/Plan F (IS) Simple/Plan E/Plan F (IS) to another plan (in conjunction with the purchase of a new handset for the purpose of switching models or increasing the number of handsets) and apply for packet transmission charge discount services, they may select either to have the discount applied starting the following month, or starting from the day the model is switched or a new handset added (fixed charges and free transmission charges are calculated on a per diem basis).
    However, when customers switch from Unlimited Voice Call Plan (mobile phone with data)/Unlimited Voice Call Plan (mobile phone)/Plan E Simple/Plan F (IS) Simple/Plan E/Plan F (IS) to another plan or packet transmission charge discount service before switching models or increasing the number of handsets, when the discount is scheduled to be applied starting the following month, it is changed to start from the day the model is switched or a new handset added.

    <WIN [1]>

      Fixed Charges
    [2]    		 Packet Transmission Charges
    [3]    		 EZweb/E-mail
    Max Payment Amount    		 Smartphone used alone: Max Amount including Wi-Fi, USB tethering and PC site viewer on +WiMAX-capable smartphone PC data communication (some models)/PC site viewer/EZweb/E-mail Max Payment Amount
    [4]
    Double-Teigaku Super-Light ¥372/month ¥0.1/packet ¥4,200/month ¥5,700/month ¥9,900/month
    Double-Teigaku-Light* ¥1,000/month ¥0.08/packet
    Double-Teigaku* ¥2,000/month ¥0.05/packet
    Packet Discount WIN Middle* ¥4,000/month ¥0.025/packet
    Packet Discount WIN Super* ¥7,500/month ¥0.015/packet
    • * New applications are no longer accepted as of August 31, 2015.
      Fixed Charges Packet Transmission Charges
    [3]    		 Smartphone used alone: Max Amount including Wi-Fi, USB tethering and PC site viewer on a +Smartphone equipped WiMAX Max Amount Including PC Site Viewer PC Data communication (Some Models)/PC Site Viewer/EZweb/E-mail Max Payment Amount
    IS Flat Rate ¥5,200/month ¥0.025/packet Free ¥500/month ¥4,700/month
    • * Free transmission does not apply to IS Flat Rate. Once each Max Payment Amount is reached, the Max Payment Amount is added to the flat rate of ¥5,200 per month. (¥5,700 when PC Site Viewer Max Payment Amount is reached, ¥9,900 for specific models when Max Payment Amount including PC data communication is reached.)

    <Car navigation system price options (exclusive for CDMA 1X WIN)>
    Subscribers to packet transmission flat rate services such as Plan E Simple and Double-Teigaku Super-Light may apply for the Car Navi Fee Option Service, and with payment of a monthly fee of ¥200, packet transmission charges for connection with the applicable car navigation system will be included in the EZweb Max Payment Amount.

    • Fixed option charge ¥200/month

    • Eligible car navigation systems
      G-BOOK and CARWINGS (IS11SH, IS12SH and INFOBAR A01 also support data communication via the PC connection. Please see the G-BOOK website or CARWINGS website for details on car navigation systems and au mobile phone models capable of connection.)
      • * Packet transmission charges from HELPNET transmission with G-BOOK, differential map updates using CARWINGS, CD track name acquisition, etc., are not included in the maximum amount.

    • Eligible packet transmission flat rate services
      Unlimited Calling Plan(Mobile phone・Data), Plan E Simple, Plan E, Double-Teigaku Super-Light, Double-Teigaku-Light, Double-Teigaku, Packet Discount WIN Middle, Packet Discount WIN Super, IS Flat Rate, Plan F (IS) Simple, Plan F (IS)
      • * If packet transmission charge flat rate service is cancelled, the Car Navi Fee Option will be automatically cancelled.
    • Application
      au customer support via EZweb or PC Web site, or telephone your customer service center.
  • [1]When used in Japan
  • [2]Free transmissions equivalent to the amount of the fixed charge are available.
  • [3]The max payment does not apply to the transmission of data through a phone connected to a PC, PDA, car navigation system, etc. (See [4] for exceptional models.) Care should be taken when communicating data by connecting a phone to a PC, PDA, car navigation system, etc. because this requires many packets when transmitting/receiving data.
  • [4]

    The Max Payment Amount applies to the transmission of data using applicable models when connected to a PC, PDA, car navigation system, etc. Please refer to the Price Plan List for applicable models.


    Price Plan List

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PC site viewer

  1. PC site viewer communication charges: ¥0.2/packet
    • * When used in Japan

    • * Please refer to the Price Plan List for packet transmission charges when using Unlimited Calling Plan(Mobile phone・Data)/Unlimited Calling Plan(Mobile phone)/Plan E Simple/Plan E/Plan F (IS) Simple/Plan F (IS).


      Price Plan List
    • * Excluding smartphones.
  2. Application for the "EZ WIN Course" is required to use PC site viewer.
  3. When the selected standby screen content is automatically renewed, communication charges are charged for each renewal.

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Other information to check

  • By phoneOpen 9:00 – 20:00

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      0120-959-472(Toll Free)

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      0120-959-473(Toll Free)

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      0120-959-476(Toll Free)

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      0120-959-478(Toll Free)

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      0077-7-111(Toll Free)

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