Why does a random app appear on my screen

[AC Question]

Basically everytime I start or end charging my phone, some random screen lock app aplears on my screen and no matter what I do i can't spot any apps or viruses on my phone which might cause it, I tried everything. Please help, thanks in advance

 

[belodion]

Does it persist in Safe Mode?

https://forums.androidcentral.com/showthread.php?t=409154