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while charging.
Allow mock locations: Tick the box behind it to allow mock locations.
5.5.4.7 Accounts and sync
It is recommended to use the factory defaults in the “Accounts and
sync” settings interface, any changes will make some functions
unavailable.
5.5.4.8 Privacy
Tap “Privacy” to enter into relevant setting interface.
1) Backup and restore
Tick the box behind the “back up my data” to back up application
data, Wi-Fi passwords, and other settings to Google servers.
Tick the box behind the “Automatic restore”, the system will restore
backed up settings or other data if it reinstalls an application.
2) Personal data
Tap “Factory data reset” to erases all data on the device.