Ads popping up in front of other apps Hi I have a Galaxy S4 on Verizon. I,ve been getting ads popping up in front of various applications like messages, browser, email and a couple others. 

What's the first thing I should look for to find the culprit?
Look up what creates those popups. Typically if you long-press the home button the bottom-most app is the one on top and it should indicate which app is creating those popups.

If it says something like: The website at "http://..." says then it's a popup created by a webview in the running application.