1. Android Central Question's Avatar
    Brought a Lenovo tablet from Amazon, it said unlock, but I cannot use my sim card because of this AT&T NumberSync from my Lenovo tablet? I need it gone. I do not have an AT&T account, never has.
    06-25-2019 02:49 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! Which tablet? Go to Settings>Apps, tap Menu>Show System, and see if the app is there. If so, select it, and see if you can Uninstall. If you can't, then see if you can at least Disable it.
    06-25-2019 03:10 PM
  3. Rukbat's Avatar
    The NumberSync app wouldn't SIM-lock the tablet. I'm afraid that it's not unlocked. Does it ask you for an unlock code when you put your SIM card into it? Or is it just not working on some other carrier? (It may not have the radio frequencies needed to work on that carrier.)
    06-25-2019 03:41 PM

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