My Apple ID was logged into my dad's mobile phone Apple store, and others sent me a text message with imassger.

View center:. Enter "*#00*#" in the dial, and click Call to view the SMS center set by iPhone. Set up a short message center. Enter "*00** SMS Center #" in the dial, and then click Call to complete the setting of SMS Center (for example, Shenzhen Mobile *00**+ 10000#). . END China mobile SMS service center setting method 1 For China mobile, the SMS service center number is+10xxxxx00, where xxxx is your long-distance area code. If it is insufficient, it is 0. For example, Lanzhou is 0 1, which should be+100 100, Wuhan is 0, and after 0, it is 00. Shanghai is 0 1, after which it is 0 10, which should be+100 1000, Beijing is 0 10, after which it is 0 108+000. After setting, restart. I hope it is useful to everyone. Remember to add+oh ~ oh in front of the SMS center. A friend replied "If it is a Japanese version, you should remove the front+"in another article of mine (S Usage Skills: [] Hong Kong version can't send short messages). Friends in need can refer to it.