Huawei Ascend P2 P2-6011 - Manual (Page 74)

Backup
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6. Touch OK.
By default, backup files are saved to the HuaweiBackup folder in the USB
storage device.
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Restoring data from a USB storage device
1. Connect a USB OTG cable to connect a USB storage device to your phone.
2. On the home screen, touch Mgmt. > then the USB storage tab.
3. Touch Restore from external USB storage.
4. Select the data you wish to restore.
5. Touch Restore.
6. Touch OK.