How to remove ads from Android screen while charging?

Android lock screen ads

Recently a large number of users have been complaining that while charging their Android phone, instead of just showing date, time, battery status, the screen also shows advertisements.

While googling the solution for it, lots of posts are saying it is caused by some particular APPs and from the list they provided, non of them worked for me. Here is the solution I finially found - so simple!

Just click the dots/gear on the top right corner of the screen, as shown in the screen shot above, then click ‘turn off’. that is it!