Published at Monday, September 28th 2020, 09:45:20 AM by Nora Craig. Iphone 11. Pop-Ups Are A No No Beware of the popup cyber criminals love to install malwares is in pop-ups for "free" iPhone wallpaper ring tones". How do these work? They work in a couple of ways when you go to a web site and your browser suddenly opens up another window in order for you to see an add. Dont click on any of these links as they can contain the malware. Most computers now have pop-up blockers as a standard feature.