Huawei is proud to brush the MIUI system and can't send text messages. I am Unicom's 3G card. I called the customer service, and he said to set the SMS center number. How to set it up?

It is recommended that you check the following steps for troubleshooting.

1 It is recommended that you click SMS-Menu-Settings-Advanced Settings-SMS Center Number to reset.

I suggest you try to call a friend to see if you owe money.

I suggest you try to see if other cards plugged into Xiaomi's mobile phone can be used normally.

If it still can't be solved, please back up the data and enter the recovery to clear the cache, user data and all data. After entering the system, the data will not be recovered temporarily, and try to send SMS directly.

If it still can't be solved, it is recommended to back up the data and try the latest development version.

A more detailed description of the problem will help netizens understand your troubles and help you solve the problem more accurately. Thank you for supporting Xiaomi mobile phone!