Unwanted pop-ups can be an annoying side effect of using a web browser on a smartphone.
Aggressive advertising pop-ups that block the entire smartphone display are a nuisance. If one appears, you should never tap on it – and you should certainly not enter any personal data in the input fields.
Address collectors can be lurking behind pop-ups that promise fictitious winnings. Or they may be seeking to lure you into unwanted subscriptions that will show up later your mobile phone bill.
