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Copy contacts between SIM and mobile phone
If your mobile phone gets slow or doesn't work as it usually does, it may help to restore the factory default settings. All configurations you've made on your mobile phone are deleted.
Find "Factory data reset"
Slide your finger downwards starting from the top of the screen.
Tap the settings icon.
Tap Backup and reset.
Tap Factory data reset.
Restore factory default settings
Tap RESET DEVICE.
Tap ERASE EVERYTHING. Wait a moment while the factory default settings are restored.
Follow the instructions on the screen to set up your mobile phone and prepare it for use.
Tap anywhere to dismiss
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