How to track down an app that shows ads on smartphone screen?
Android 4 &amp; 5


When the advertisement shows up, press the app switch button to display the recents menu (if the advertisement is full-screen and cover your soft buttons, swiping down from the top of the screen will make it appear).
It will show the name of the app displaying the advertisement.
From there, long press on the app and chose &quot;app info&quot;
Uninstall the app.

Android 6
For Android 6 the process is similar, however the recents menu looks a bit different. In this step you now have to long press the app icon in the title bar:

Android 7
For Android 7 the process is similar, however the recents menu looks a bit different. In this step you now have to long press the app icon then an info icon appears in the title bar that opens the settigs dialog of the app the screen belongs to: