How to solve the problem that Japanese version of iPhone 5au can't add 86 messages?

This problem is caused by the Japanese version of iPhone5. The address book needs to be added with 86. After adding 86, the text message cannot be sent. Besides, if someone sends you a text message for the first time, you can't get it back. If you text him for the first time, you can text him later and he will receive it. The problem is that the text message has not appeared in the dialog box yet. There are two solutions, one is free and the other is expensive, depending on which one you choose. Download a software called number assistant for free, click all three options in turn after entering the software, and then save it to the last one before choosing. What's more, giving the machine an activation code can solve the problems of 86, SMS and MMS, including facetime and imessage. After the activation code was given, it was used exactly the same as that of China Bank.