03-31-2015 12:41 PM
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  1. AC Question's Avatar
    AC Question
    I recently took my Samsung Galaxy S4 to a shop to have it unlocked to allow me to use another network. However, since then it just restarts itself seemingly at random and then freezes when I unlock the screen for the first time but never the second. I took it back to the shop and they have no idea how to resolve it. Please help! I have done a cache partician wipe as advised but it didn't make any difference.
    03-31-2015 09:58 AM
  2. beagle82's Avatar
    beagle82
    Is your phone by any chance rooted?
    belodion likes this.
    03-31-2015 10:25 AM
  3. belodion's Avatar
    belodion
    Co-Ambassador Team Lead
    Are you using an SD card? It may be bad.
    Also, try using another SIM.

    Edit, posted same moment as above.

    Posted via the Android Central App
    03-31-2015 10:27 AM
  4. B. Diddy's Avatar
    B. Diddy
    Senior Ambassador
    Welcome to Android Central! Another thing to try is Safe Mode, which temporarily disables all 3rd party apps. http://support.t-mobile.com/docs/DOC-5744

    If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.
    03-31-2015 12:41 PM
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