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FAQ
  • Do I need to fill out an application to purchase Nippon SIM?
    No application is required.
  • Is it possible to charge the SIM card (increase the amount of data)?
    Cannot be charged.
  • How long does the SIM card expire?
    The expiration date printed on the SIM package is the last usage start date. Please be sure to start using it by this date. If you start using it until this date, you can use it with the expiration date stated on the package.
  • How long is the SIM card used?
    The available period is as follows.・ The product number is DHA-SIM-023 / 025/043/057/088: The usage start date (1st day) is the same day, and it can be used during the expiration date stated on the package.・ Other than the above: The usage start date is from midnight the next day, and it can be used during the expiration date stated on the package.
  • Can I send a call or SMS with a prepaid data SIM card?
    Calls and SMS transmissions are not available.
  • Does Nippon SIM for Japan come with a phone number?
    Nippon SIM for Japan is for data communication only. A phone number for voice calls is not included.
  • Can I use SMS with Nippon SIM for Japan?
    Nippon SIM for Japan is for data communication only. SMS cannot be used. It cannot be used for sending / receiving SMS, SMS authentication for apps, etc.
  • Please tell me the area where the SIM card can be used.
    The DoCoMo line Nippon SIM for Japan can be used in the NTT DoCoMo area throughout Japan. Please see the NTT DoCoMo website for details. https://www.nttdocomo.co.jp/area/ Softbank line Nippon SIM for Japan It can be used in Softbank areas all over Japan. Please see the SoftBank website for details. https://www.softbank.jp/mobile/network/area/map/
  • What bands (frequency bands) can be used with the SIM card?
    The following bands are available.・ DoCoMo line:4G / LTE: Band1 (2.1GHz) / Band 3 (1.8GHz) / Band 19 (800MHz) / Band 21 (1.5GHz) / Band 28 (700MHz) / Band 42 (3.5GHz)3G / W-CDMA: Band 1 (2.1GHz) / Band 6 (800MHz) / 19 (800MHz)・ Softbank line:4G / LTE: Band1 (2.1GHz) / Band 3 (1.8GHz) / Band 8 (900MHz) / Band 41 (2.5GHz)3G: Band 1 (2.1GHz) / Band 8 (900MHz)
  • Is tethering available?
    You can use it unless it is stated in the package that it cannot be used. However, if you are using an app-free product, communication by tethering may not be subject to count-free due to system restrictions.
  • What is APN?
    APN (access point name) is a setting that allows the device to connect to the DHA mobile service.
  • What is SIM Free (SIM unlock)?
    SIM-free refers to devices whose communication is not locked by the carrier from which you purchased the product.Please follow the procedure from My docomo, My au, or My Softbank to unlock the SIM lock.NTT DoCoMo: https://www.nttdocomo.co.jp/support/unlock_simcard/ au: https://www.au.com/support/service/ mobile / procedure / simcard / unlock / Softbank: https://www.softbank.jp/support/faq/view/25919 It can be canceled at each company's shop other than online. Please check each company's website for SIM unlock fees at the shop.
  • What is a SIM-free terminal?
    The terminal is not locked by the SIM card carrier. Since you can use any SIM card, you can freely select the SIM card to use from carriers (or cheap SIM, prepaid SIM) in Japan.To use communication with our SIM card, APN setting is required.
  • What devices are available?
  • I have a docomo smartphone. Can I use Nippon SIM for Japan without unlocking the SIM?
    If you purchase a product with a SIM number that starts with AX / GD or DN, you can use your doCoMo smartphone without unlocking the SIM.Please check the product description in advance or contact customer support if you are unsure.
  • Can I use it on my device (smartphone, tablet, router)?
    (1) When using the following combinations, the device must be unlocked from the SIM lock.・ When using various Nippon SIMs with SoftBank / au terminals.・ When using a full MVNO line product with a doCoMo terminal.(2) Please check the supported frequencies of your device before using.Nippon SIM uses DoCoMo's network and supports the following frequencies.・ 4G / LTE: Band 1 (2.1GHz) / Band 3 (1.8GHz) / Band 19 (800MHz) / Band 21 (1.5GHz) / Band 28 (700MHz) / Band 42 (3.5GHz)・ 3G / W-CDMA: Band 1 (2100GHz) / Band 6 (800MHz) / Band19 (800MHz)Platinum band 4G / LTE: Band 19/28, 3G: Band 6 is supported, the easier it is to connect.* Only the product model number DHA-SIM-088 uses the SoftBank network, and the supported frequencies are 4G / LTE: Band 1 (2100GHz) / Band 3 (1800GHz) / Band 8 (900MHz) / Band 28 (700MHz) / Band 41 (2500GHz); 3G / W-CDMA: Band 1 (2100MHz) / Band 8 (900MHz).(3) APN setting is required when using. Click here for how to set the APN for each terminal. https://www.nipponsim.jp/ap For routers, it is necessary to add or edit the APN profile. For details, see the instruction manual of your device.
  • What is eSIM?
    eSIM is a "main unit integrated SIM" that has a built-in SIM inside the smartphone terminal. The difference from the physical SIM card is that you do not need to purchase the physical SIM card each time and it can be completed online, and there is no need to replace the physical SIM and there is less risk of damage to the SIM and equipment. After purchase, simply scan the QR code and install the eSIM profile to use it.
  • It is a terminal that does not support eSIM, but I bought eSIM by mistake.
    Please contact us from the inquiry form to the effect that you purchased by mistake. We will replace it with an equivalent physical SIM. Please note that replacement shipping charges will be borne by the customer .
  • I can't communicate. What should I do?
    Please check the following points.1) Is your device SIM-free?2) Is an error message displayed?3) Is the antenna icon displayed at the top of the device? If it is not displayed, reinsert the SIM card. If it is not displayed (or NO SIM is displayed) even after reinserting it, please contact our customer support.4) If it is a dual SIM compatible device, is it set in slot 1? If it is not set in slot 1, insert the SIM card.5) For Android devices, double check the APN settings and enter the correct settings (especially if you have entered uppercase English letters and extra spaces). For iOS devices, remove the installed profile and reinstall.6) For Android devices, change the authentication type from CHAP to PAP, save it, and then try to connect. If you cannot connect, change from PAP to CHAP and restart the terminal if necessary.7) Make sure that the data communication switch is ON.8) Turn "Airplane mode" on and then off.9) Reboot the device.10) If the above does not help, please contact our customer support.
  • Does the SIM card need to be activated (opening process)?
    No need. You can use the SIM card as soon as you set it and set the APN.
  • Please tell me how to set APN for iPhone / iPad.
    Please check the iOS APN settings on the APN settings page. https://www.nipponsim.jp/ap
  • How can I use tethering function? It is not shown on my iPhone/iPad
    You will need to do extra settings iPhone: Setting > Cellular Data > Celluar Data Network > scroll to the bottom until you come to "tethering (Hot Spot)", please follow the instruction and fill in APN/User Name and Password iPad: Setting > Cellular Data > APN > scroll to the bottom until you come to "tethering (Hot Spot)", please follow the instruction and fill in APN/User Name and Password Once you finished the setting you will be able to see the tethering function appeared when you click on Setting.
  • Please tell me how to set up a Wi-Fi router.
    APN setting is required. For the setting method, refer to the instruction manual of your terminal.
  • Even if you set the SIM on your iPhone, NO SIM is displayed. What should i do?
    (1) Tap "Settings" → "General" → "Information".(2) If there is a "career update", a message will be displayed, so set it.(3) Tap "Settings" → "General" → "Software Update".If the latest version of iOS is not installed, a message will be displayed, so update it. Please back up via iTunes when updating.(4) Tap "Settings" → "General" → "Reset" → "Reset network settings".Initialize the network settings.(5) Tap "Reset network settings", enter the passcode, and execute the reset to reset the Wi-Fi password, Bluetooth registration record, VPN settings, and APN settings.
  • "The profile could not be installed" is displayed on the iPhone. What should i do?
    Please try the installation after deleting the installed profile.To delete a profile, go to Settings → General → Profiles, tap the profile, and tap “Delete Profile”.
  • I am an iPhone user. I downloaded the Profile with the QR code, but I don't know what to do after that. It remains 3G.
    Due to the change in the iOS version of the iPhone, the setting method has changed a little. Settings > General > VPN & Device Management > Click the downloaded profile, then click Install on the top right. Follow the instructions on the screen and proceed with the settings.
  • 4G LTE communication is not possible. What should I do?
    Check the following settings.(1) Does your device support 4G / LTE? For 3G-only devices, it will be used in 3G.(2) Do you support one or more bands (frequency bands) provided by DOCOMO?If there are few compatible bands, communication may be slow.(3) Does your device support dual SIM cards? Insert the SIM card in slot 1 as some devices may support 4G LTE only in slot 1.(4) Is the 4G LTE connection signal displayed at the top of the screen?If you see H or 3G, you are not connected to a 4G LTE network. Please check the following points.・ Check if the APN setting is correct.-Try turning OFF / ON or restarting Airplane mode.(5) For Android, check that the input items in the APN settings are correct. For iOS (iPhone / iPad), go to Settings> General> Profiles, delete any old profiles, and install again.
  • I was asked to enter MCC and MNC on my device. What should I enter?
    On Android devices with earlier OS versions, you may be prompted to enter the SIM card carrier information because it is not registered in the system.Please try updating the Android OS version to the latest version as it may solve the problem.If the same problem occurs after the update, enter 440 for MCC and 10 for MNC for Nippon SIM for Japan (NTT DoCoMo). For Nippon SIM for Japan (SoftBank), enter 440 for MCC and 20 (or 4) for MNC.For other SIM cards, please contact customer support.
  • I am using a dual SIM terminal. Which slot should I insert the SIM card in?
    Set it in the SIM1 slot.
  • I have set the APN of Nippon SIM for Japan roaming SIM (Softbank 8GB / 15GB / 50GB) to NEC Aterm (MP02LN / MP02LS / MP04LN / MP05LN), but the message of 3G error (33) is displayed.
    1) Connect your smartphone or computer to NEC Aterm via WiFi. 2) Open the browser on your smartphone or computer. 3) Enter 192.168.179.1 or www.aterm.jp, and then log in to the setting screen. 4) Click Basic Settings> Access Point Name (LTE / 3G) on the left panel to set (edit) APN. Also click on International Roaming Settings.
  • I purchased eSIM overseas, is it okay to install it in advance before departure?
    Please set after arriving in Japan. If you pre-install eSIM for Japan overseas, you may not be able to use it after arrival. In that case, please note that it will not be supported.
  • Is it possible to scan the eSIM QR code multiple times?
    The QR code of eSIM can be scanned only once. Please note that it will be invalid after the second time.
  • Can I reissue the eSIM QR code?
    The eSIM QR code cannot be reissued.
  • A problem occurred while installing eSIM. What should i do?
    Our support page Please fill out the form and contact us. Please do not delete the installed QR code.
  • Can I exchange or return the purchased SIM card?
    We do not accept exchanges or returns of purchased SIM cards.
  • Is it possible to extend the SIM card usage period?
    Cannot be extended.
  • Will I be notified when the SIM card data is exhausted or near the expiration date?
    No.
  • Is there a limit to the amount of 4G / LTE data that can be used?
    For the standard version and app free plan, there is no limit on the amount of data used per day.See the product page for unlimited plans.However, from the viewpoint of fairness of data communication usage (FUP, Fair Usage Policy), communication may be restricted to users who perform a large amount of communication in a short period of time. In addition, there is a condition to shift to low speed for each product. See the product packaging description for details.
  • The data speed is slow. Why?
    Data speed fluctuations slow down in places and times or in crowded or poorly received areas. When the amount of data of the purchased plan is consumed, it will enter the low speed mode and operate in the low speed mode until the end of the valid period.* The service of the 90days / 180days plan will end when the capacity of the plan is consumed.
  • Please tell me how to check the amount of used data.
    (1) You can check the rough capacity from the setting items. It may differ from the actual usage on the system.・ For iOS: Settings> Mobile communication> Main line mobile data communication: This billing period (system service)・ For Android: Settings> Mobile data> Data usage(2) Please contact support with your SIM card number (020xxxxxxxx number and number starting with AX / DN / GD).
  • The antenna icon is not displayed. What should i do?
    Reinsert the SIM card. If it doesn't improve, make sure mobile data is turned on.If you still do not see the antenna icon, please contact customer support with your SIM card number.
  • "NO SIM" is displayed. What should i do?
    Please reset the SIM card. If it doesn't improve, make sure mobile data is turned on.If NO SIM is still displayed, please contact customer support with your SIM card number.
  • "Invalid SIM" and "No SIM card inserted" are displayed. What should i do?
    Please check the following points and try.1) Make sure your device is SIM-free or SIM-unlocked. 2) Tap "Settings" → "General" → "Information".3) If there is a "Carrier Update", a message will be displayed, so set it.4) Tap "Settings" → "General" → "Software Update".If the latest version of iOS is not installed, a message will be displayed, so update it. When updating, please back up via itunes.5) Tap "Settings" → "General" → "Reset" → "Reset network settings".Initialize the network settings.6) Tap "Reset network settings", enter the passcode, and execute the reset to reset the Wi-Fi password, Bluetooth registration record, VPN settings, and APN settings.If you have tried the above and the problem persists, please contact customer support.
  • In what language can I get support?
    Support is available in Japanese, English and Chinese.
  • Where can I get support if my SIM card isn't available?
    a) Check with the support center of the store where you purchased the SIM card. Follow the setup instructions. After resetting, please check if it can be used.b) Contact the support service at the store where you purchased the product.If you need our support after trying a) and b) above, please contact us by email with the following information.1) Your name2) Address or Japanese address for the next 3 days3) Your phone number (overseas number that can be accepted) or SNS account.4) Device brand name and model name5) Where you purchased your SIM card6) Name of prepaid SIM card7) Phone number and card number printed on the prepaid SIM card (0x0-xxxx-xxxx; AX, GD or DN xxxxxxxxxxxx)8) Symptoms of the problemSupport email: support@nipponsim.jpWe will get back to you within 24 hours (as soon as possible).
  • Is it necessary to return the SIM card after use?
    Not required. Please discard it by yourself.
  • For customers planning to use in Hong Kong
    According to Hong Kong law, you need to register yourself when using the SIM card. [3 Hong Kong] Click here for real name registration (https://web.three.com.hk/prepaid/realnameregistration/index-en.html)
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