Sometimes, a third-party app may cause your phone to lag, malfunction, or freeze. In Safe mode, all third-party app activities are temporarily deactivated. If your phone functions as it should while in Safe mode, then the problem is caused by a third-party app and is unlikely a hardware issue.
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Press and hold the POWER button. Then press and hold
Power off until the
Reboot to safe mode prompt appears. Tap
OK.
Your phone will restart and you should see
Safe mode at the lower portion of the screen.
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Test your phone to see if Safe mode resolves the issue.
If yes, uninstall a recently-downloaded app that might be causing the problem.
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To switch back to Normal mode, turn off your phone, and then turn it back on again.