Why does my Xiaomi 2 mobile phone always automatically delete all messages for me?

Please recall that before this problem occurred, did you install software or accept other files, and did your mobile phone get root permission? If so, please temporarily delete these softwares and turn off root privileges. See if it's normal. Still no, you can try the following solutions step by step:

A please back up your data, enter recovery mode, clear cache, clear user data and clear all data. When restoring the backup, do not restore the settings and third-party security software in the mobile phone. Try to use it normally.

B. If it still doesn't work, I suggest you brush the whole package again with a wire brush according to the following methods. You can refer to the following brushing tutorial:

A. First, you download a MIUI line brush package suitable for your model in Xiaomi official website. This is the link:/topic-mirom.html.

B. During downloading, please back up data, enter recovery (shutdown, press and hold the volume increase+power on key to enter recovery), and clear the cache, user data and all data. Install the computer driver and download a miflash brush tool. This is the driver installation link:/thread-504332-1-1.html.

C. After everything is ready, please use the six-line brush according to the official website's brushing tutorial, which is the official brushing tutorial:/thread-3104435-1.html.

D. If you are not familiar with brushing, you can refer to the brushing video tutorial made of rice flour:/v _ show/id _ xnteymjq1mzi4.html.

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!