1. Android Central Question's Avatar
    Never seen popups in the OS before, If u make a call, when u hang up an ad pops up. Randomly ads start playing when the screen is off.

    If anyone can help!

    Also curious who is getting the ad revenue on an old second hand phone!
    10-16-2018 03:24 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! Did you do a full factory reset when you got the phone, or did you just add your account to the phone, with the original owner's account still there?

    The bottom line is that there's some adware on the phone. It's likely that some app that either you or the previous owner installed came with adware. Uninstall apps one by one until the problem goes away.
    10-16-2018 07:04 PM

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