Help Japan docomo how to solve the problem of SMS +86.

The Japanese version of docomo mobile phone is brought back to China for use. Mobile phone stores need to add stickers, otherwise it won't work. Apple mobile phone, Samsung's words should be changed to Chinese. In Japan, there is a charge for sending 86 short messages, and the international roaming fee is very expensive. Or there are phone numbers in Chinese newspapers that can send short messages to China for free. You can try!