Xiaomi 12 sets the address of SMS center.

Hello Xiaomi, how to set the number of the information center:

Enter on the dial.

*#*#4636#*#*

, and then select "Mobile Information". There is an SMSC input box at the bottom, where you can enter the "SMS center number" to which the mobile phone belongs.

If you are a Unicom user in Chongqing, enter

"

+86 130 1083 1500"

(English must have a colon), or call 10086 or 100 10 for manual consultation.

Then click "Update", you can't see any prompt, just restart the phone, and then try to send a message to others after restarting.

If the above method fails, please try the following method again:

1. Check whether there is an optimizer or 360 software installed in the mobile phone, and whether the information program is prohibited from starting and booting. If so, please allow the SMS program to start.

2. Try to install a third-party SMS software (such as GO SMS). If the third-party software can send and receive normally, please clean up the SMS data (method: Settings-Program-Program Management-All-Information-Clear Data).

3. If it really doesn't work, change the card and brush the machine.