How to check whether the mobile phone is infected with Trojan virus?

After the phone is poisoned, it will automatically restart, frequently crash, run slowly and have a black screen, but this does not mean that this situation must be caused by a virus. Inherent bugs caused by the old operating system, compatibility problems of third-party software, and hardware failures may also cause the above symptoms. Therefore, judging whether the mobile phone is poisoned or not requires some deeper judgments.

1. Back up data such as mobile phone address book and SMS and format it completely, or call it system reset. It's more like a reinstallation system on a computer. If the above symptoms still appear after the reset, it is probably not a virus problem.

2. In this case, it is suggested to upgrade the system version or send it to the maintenance network for further testing. If there is no previous situation after the mobile phone is reset, you can preliminarily judge that your mobile phone is affected by the virus.

3. In this case, you should install mobile phone antivirus software such as Netqin Guardian, Jinshan Guardian and 360 Security Guardian for the system while the system is still "clean", and then enable the software to scan and kill all the storage devices of the mobile phone, thoroughly find out the root causes of system problems and carry out post-protection.