How to unlock a Japanese iphone6 locked mobile phone in China?

Locked mobile phones cannot be unlocked in China, because these locked mobile phones are contract machines in foreign countries, and they must use signed cards, and they can only be unlocked at the mobile phone manufacturer after the contract expires.

The method of unlocking is as follows:

After the contract expires, contact the mobile phone contractor by phone and provide your own Apple mobile phone ID.

wait for the contractor to check whether the ID mobile phone expires before replying to the email.

wait 1-2 days to receive the confirmation letter from the contractor, and then wait for Apple to unlock the mail.

Japan has a locked version of the iPhone 6:

A locked version of the iPhone means a network lock, which means it is bound to the operator. Basically, all Japanese versions of iPhone are contract machines of operators. The three major operators, kddi softbank and docomo, are equivalent to China Mobile, China Unicom and China Telecom. (Note: the locked version that can't be bought is the American sprint version, which is usually called Xiaobai. ) Because the phone is locked, if you insert China's mobile phone card directly, you can't make phone calls, send text messages, surf the Internet via wap, etc., so you can only use it as an iPod Touch.