Why does the mobile phone have a flashing red border? Is it infected by a virus?

It's a virus in the mobile phone. It is recommended to install Tencent mobile phone housekeeper to kill virus, kill virus and clean virus in one, and upgrade Trojan antivirus to professional antivirus, which is safer and more thorough, and can meet the dual needs of antivirus protection and safety management.

Can effectively clean up the garbage cache, but also optimize the system, the system cleaning ability is improved by 3 times, so that you can use it safely and safely, away from spam viruses.