Why does my mobile phone always send messages randomly? My mobile phone is BBK·V2, and I always draw an unlock pattern and sell it to my mobile phone friends.

Hello, it may be caused by some third-party software. Try the following methods:

1) It is recommended that you use a third-party PC communication tool (such as pea pods Mobile Wizard) to back up relevant data, and then click Settings->; General->; Restore factory settings-> Clear all data "for recovery. This operation will lose all the data on the mobile phone, including the phone book, SMS and installed third-party programs, and the data on the TF card will not be lost.

2) It is recommended that you go to the local after-sales service center to upgrade the system. The address of the after-sales service center can be found in the Settings-General-After-sales service menu. You can also check the address of the after-sales service center in BBK official website:/service/network.php.