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When your device is not working properly, you can do factory reset to recover your device.
Factory reset will erase all data from your device's internal storage, so backup important user data before doing factory reset.
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APPLIES TO
PM451
Enter Android recovery mode
In order to enter recovery mode,
- Force the PM451 to be restarted by pressing the power button more than 7 seconds
- Press SOFT_RIGHT and Fn in the sequence of keys just after when restarted
The table below describes the location of the buttons depending on PM451 keypad type.
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How to Factory Reset PM451
If you can turn on the device and use the Settings app,
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If you cannot turn on the device,
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