When I am in China, can I still use my Japanese mobile phone to send short messages to my Japanese friends? The mobile phone belongs to Softbank.

Yes, it is, but it's very expensive. Softbank's mobile phone is used for domestic and international roaming, and the phone bill is very expensive. First of all, your friend should use the World Wide Web, not a roaming mobile phone. Generally, the new mobile phones are ok now. In China, whether you use Unicom's 2G or Unicom's 3G network, the charges are the same. SMS) 100 yen each. s！ メール (MMS of Softbank),

100 yen 10kb is more than 5 yen/10KB. I'll tell you the other charges by the way. Call China 100 yen, call Japan 175 yen, and answer 75 yen. Of course, receiving text messages is also free. Internet access 10kb 100 yen, and thereafter every 5kb 10 yen.

SoftBank needs a mobile phone card in China, and the signal is not very good. And you can't surf the internet or send MMS (SMS is ok). You can ask your friends to buy stickers in China. And there is a Softbank card that can crack multimedia. You can check it online for details.