I have Samsung Galaxy E5 (SM-E500H) with Android 5.1.1. Recently, I installed few apps and after that, I encountered an annoying little pop-up below the screen sometimes. I got into uninstalling some of those apps but the pop-up didn't go away. How can I get rid of that? More technically, how can I find out which process is the cause of that?
Thanks for all the helpful comments. Answer to: Determine which app is drawing on top of other apps? helped me a lot. I monitored the apps having special permission to put an overlay on top of other apps. I waited until the pop-up showed and with a little compare with the preceding apps list I could find the causing app. Thanks @Firelord.
So, I want to expose the app that caused this unwanted and annoying pop-up:
Official name: Premium Wallpapers HD
Package name: com.pixign.premiumwallpapers
That AD seems similar to the Google ADs. It's not related to TouchWiz. My suggestion is to search through your installed apps for something that may seem suspicious, or that requires too many permissions, and uninstall it.
Furthermore, I know of no apps that do overlay an existing application with ads, so be careful to not have installed some malware. Since I can see the CM Security antivirus, you should enable the heuristics in the app and scan your system.
Lastly, if your device is rooted, I recommend to install an AD blocker app.