How to get a Japanese prepaid SIM card. Part 2

This is a follow up to my pre departure post “How to order a Japanese prepaid SIM card“. So I collected my packet from the airport post office. One of the ladies behind the counter (they all seemed to be ladies) asked to see my passport, for both ID purposes and to match the name on the passport to the one on the packet, so make sure your you write your name exactly how it appears on your passport!

Yūbinkyoku 郵便局 (ゆぅうびんきょく ) is the Japanese word for post office. A useful phrase for asking ‘where is the post office?‘ is ゆぅうびんきょくはどこですか。Yūbinkyoku wa doko desu ka?

This is the Japanese logo for the Post Office – Look out for this sign as you could easily walk past it!

Before handing over the package, you will be asked to sign for it, which to be honest is a standard procedure. This is what your packet will probably look like.

Upon opening the packet you will see the ‘docomo’ SIM card and an instruction sheet. Now for the instructions on setting the SIM card up…This was the bit that I was the most nervous about. As I mentioned in part 1, I have an android device so I followed the android instructions; (iPhone users, need not worry, as you can probably see from the picture, there are iOS7 instructions as well).

Instructions for Android phones:

  1. Go to settings
  2. Under wireless and networks – go to mobile networks
  3. Select Access Point Names and create new APN
  4. Enter APN information and save
  5. Select the APN you have just created.

APN Information:








To my relief, this process was fairy straight forward and the SIM card activated immediately! I was online in Japan yay! Here are some top tips on conserving your data allowance:

  1. Turn of background data – Apps such as Facebook and Twitter will be running in the background waiting for updates and likes etc so it’s best to disable this before installing the SIM.
  2. Put your phone on ‘airplane’ mode when you are not using your data.
  3. If using Google Maps, try to plan you route whilst connected to your hotels Wi-Fi and then take screen prints of the route.
  4. For live navigation with Google Maps, once it has found the best route, you can switch the phone to Airplane mode and Google Maps will continue navigating you (however, if you go totally of track, it will need to reconnect to the internet for re-routing).

*Important* don’t throw away the card in which the SIM card is attached as you will need this when wanting to find out how much data allowance you have remaining. It also contains useful numbers for customer service / support.

Overall, I had a good user experience with b-mobile’s visitor SIM card. The connection speed was fast and always available. I did however have trouble accessing the website for remaining allowance info a couple of times. Also, when you are nearing the end of the 14 day ‘contract’ b-mobile will email you letting you know of this and how to continue using it after the 14 days are over. Check out the below email:

Important announcement from b-mobile
Announcement about b-mobile continuous use
Dear Sir / Madam,

Thank you for your continued support of b-mobile.

Your b-mobile(08095836572) SIM service has expired on 2014/10/26.
You may continue to use your b-mobile by charging it within 10 days of expiration.

Please note that you cannot charge your b-mobile once more than 10 days have passed since expiration.
Please charge soon to continue using your b-mobile.

To Charge your b-mobile, please visit the following URL while connected to your b-mobile:

Thank you again for your continued support.

* We apologize to any customers who have received this email after charging their
b-mobile today./in advance for sending this email to customers who have
already charged your SIM.

// Contact information for inquiries //———————————-

b-mobile helpdesk
Number: 03-6721-5032 (7:00-11:00)

This email is a system generated response.
Please do not reply to this email.
If you have inquires contact us from the following URL.

You can find our frequently asked questions at
Japan Communications Inc.
All rights reserved.
Copyright (c) 2001-2014 Japan Communications Inc.

What about WiFi?!?! I hear you scream…Worry not, I’ll be writing a post on WiFi and Japan, which will hopefully dispel some myths you may have heard about WiFi in Japan.

4 thoughts on “How to get a Japanese prepaid SIM card. Part 2

  • Pingback:How to get a Japanese prepaid SIM card. Part 1 | JAPAN - LOVE IT - LIVE IT - LEARN IT

  • March 16, 2015 at 4:56 pm

    Hi Raf. I am Queenie from Hong Kong. I m going to Japan and would like to purchase a b-mobile prepaid SIM card. My phone is Sony Xperia Z2 (D6503). I am concerning my xperia Z2 is supported by b-mobile sim card. I am afraid it only works for Xperia Z2 of Japan version. May I ask what is the version of your Z2 and was it work well for the sim card? Thank you very much!!

    • March 17, 2015 at 7:47 am

      Hi Queenie! Thanks for your comment, I believe that you shouldn’t have any problems using you Sony Xperia Z2 in Japan so long as your device is Unlocked (SIM Lock Free). If you don’t know if your device is unlocked or not, please ask the store where you purchased your device. Also the FREQUENCY of Your Z2 must support one of the following frequency LTE Band 1 (2100MHz), Band 19 (800MHz), Band 21 (1500MHz) W-CDMA/HSDPA/HSUPA Band 1 (2100MHz), Band 19 (800MHz)and from what I can see, your Z2 has the required frequency but just to be certain you can use the following website to check your phone specification

      The b-mobile simcards are meant for foreign devices as they are for visitors so don’t worry about it not working in your Z2 because mine was purchased from the UK and I had no problems whatsoever using it in Japan!

      Please let me know how you get on.

      • March 17, 2015 at 3:58 pm

        Thanks for your quick reply, Raf!
        I will double check if my phone is unlocked and supporting the frequency.
        It is very useful. Hope it will be alright!


Leave a Reply

Your email address will not be published. Required fields are marked *