Restarting and resetting
You can force your device to shut down in situations where it stops responding or won't restart normally. No settings or personal data get deleted. You can also reset your device to its original factory settings, with or without deleting all of your personal data. This action is sometimes necessary if your device stops functioning properly.
Your device may fail to restart if the battery level is low. Connect your device to a charger and try restarting again.
To force the device to shut down
1Remove the SIM and memory card cover.
2Using the tip of a pen or a similar object, press and hold down the OFF button for about 10 seconds.
3After your device emits a series of three quick vibrations, release the OFF button. The device turns off automatically.
Do not use overly sharp objects that could damage the OFF button.
To perform a factory data reset
To avoid permanent damage to your device, do not restart your device while a reset procedure is underway.
1Before you start, make sure to back up any important data that is saved on the internal memory of your device to a memory card or other
2 From your Home screen, tap .
3Find and tap Settings > Backup & reset > Factory data reset.
4To delete information, such as pictures and music, from your internal storage, mark the Erase internal storage checkbox.
5Tap Reset phone.
6If required, draw your screen unlock pattern, or enter your screen unlock password or PIN to continue.
7To confirm, tap Erase everything.
If you forget your screen unlock password, PIN or pattern in step 6, you can use the device repair feature in the PC Companion or Sony™ Bridge for Mac applications to erase this security layer. By running the repair feature, you are reinstalling software for your device and you may lose some personal data in the process.
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