How to recover Prestigio MultiPhone 8400 Duo – Windows Phone 8.1 to Factory Settings and Hard reset (Wipe)
Hard reset Prestigio MultiPhone 8400 Duo using external hardware keys
- Turn off the device
- Press and hold the Volume down key and then briefly press the Power key.
- Release Volume Down key until the Exclamation (!) logo appears
- Then press and release Volume Up key
- Press and release Volume Down key
- Press and release Power key
- Last press and release Volume Down key.