1. Firstly hold down the Power key and wait for the menu in which select option turn off the phone, or press and hold Power button and wait until the phone turns off.
2. Wait a couple of seconds.
3. Afterwards press the Power button, and wait until the phone turns on.
1. Remove the back cover and the battery for a short while.
2. Put the battery and the cover back in.
3. Turn on the phone by holding the Power button.
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