Suddenly Xiaomi's mobile phone can't send text messages online.

Hello, I suggest you check whether the network message is not opened. If it is opened, it can't be sent. I suggest you try brushing the machine. Remember to back up important data before brushing.

Please go to the forum to find the brush package and tutorial suitable for your mobile phone model. /

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!