Why does my mobile phone always send short messages to strangers for no reason recently?

Cell phone is poisoned and needs antivirus.

Download mobile phone antivirus software first, and scan for antivirus;

Second, find out the problematic software, such as opening the software, automatically popping up advertisements and other information. The software itself has Trojan virus, so just delete the software.

Third, take out the mobile phone memory card and scan it. You need to format the memory card if necessary (you need to back up the data first);

Third, all the above methods have no effect, so we can only restore the original settings of the mobile phone and clean up the mobile phone software again.