Review apps that are not from trusted developers.Click ‘My Games & Apps’ to view a chronological list of apps you’ve downloaded. You can visit the Google Play Store and click on the three horizontal lines in the upper right-hand corner. Reviewing which apps you’ve recently downloaded.To do this, first narrow down which app is causing the problem by: Many times, there is no option to block these ads you need to remove the bad application from your phone. Key indicators that this is your problem consist of a change in your home screen’s layout, ads popping up while you’re navigating through your phone, or even using a trusted app (like Facebook). These advertisements begin to appear when you’ve downloaded an application and allowed certain permissions to spam your phone.