I keep getting ad's on the home screen & I have no idea which app is giving me these ad's when i press windows screen it shows that there is an app running in the background but it's named "stop me" , i don't know what's going on .
If you can't seem to pin point the app install "No Root Firewall" or similar type of app. Then block all the apps that you manually installed and see if it goes away. If it doesn't it might mean that you have a malware infection.
