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Can I bind other mobile phones when sending and receiving short messages?

Unbind the original mobile phone number by sending QXBD to 1700 (mobile) or 9777 (Unicom), and then bind your new mobile phone number.

Suggestion: Don't change the bound mobile phone in a hurry. Even if your original mobile phone number is down, you can send SMS and MMS within a certain period of time, which is equivalent to free, and don't be white-haired. It's not too late to bind the new mobile phone number when you can't send SMS or MMS. I am now enjoying the free service brought by the loopholes in China Mobile and Tencent.