Why is it that my mobile phone (Xiaomi 1S Telecom Edition) sends short messages very slowly, sometimes I can't send them out, and it is also very slow to receive short messages. I use a mobile card.

I suggest you try to clear the data. Please back up the data before cleaning. Don't rush to recover data after cleaning. Test it. In addition, don't arbitrarily grant ROOT permission when using the mobile phone, and the software that needs to be upgraded should be upgraded in time (backup: security center-backup, backup the data you need. Clear data: press and hold the volume up button and the power off button when the boot screen appears, and then let go to resume. Enter Recovery & gt Chinese > clear data > clear all data. ),

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!