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Thread: Securing a used Android device
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Old Apr 21, 2016 | 12:03 pm
  #5  
FoxCL9
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It'd be easier if you mention which device exactly.

First off, start by doing a factory reset.
Then boot into stock recovery.
Wipe data/factory reset (3 times)
Wipe cache partition (3 times)
Reboot

Or you could repeat the steps above, flash the latest stock firmware and then wipe internal storage again.

If it's a Nexus, great way to do it is by re-flashing the userdata partition and then doing a clean wipe through recovery.
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