First of all, the package name is that of Tencent Games, ->but<-, "Application not installed" may mean that the provider's signature is invalid. This installation package may have been modified, -> or <- you have installed another version of the program in advance, but that version is not official or has been modified, resulting in inconsistent signatures.

Secondly, in some operating systems, the last failed installation will be automatically performed when booting. This is not surprising. However, it is recommended to delete this installation package that cannot be installed.

->It is also possible<- because your installation package is located in the startup installation directory "/system/app". The software in this directory is automatically installed every time the computer is turned on, and the signature is not verified. . This error may mean that the package could not be installed successfully for other reasons. Use root privileges to enter the startup installation directory "/system/app" and delete the corresponding APK.

Developer_ken from Information Technology and Software Development->Amateur<- Enthusiast, please give me some advice if the explanation is inappropriate.

--------------------------------------------- -

Revised version

First of all, this error was left by the last time you installed the software with the screen turned on. It is not a virus at all.

Second, don’t give any software accessibility permissions unless you really need it, and make sure it doesn’t do unexpected things. Software with accessibility permissions can operate your phone as if you were your own—permissions that could be used to take control of your phone or steal your privacy.

This is most likely because the signature (explained in the answer to the wrong question above. The signature is used to confirm that the application comes from the publisher and has not been modified) does not match the installed old version of the software, or the file content The signature does not match the signature (meaning that the installation package has been modified after release).