You can perform a hard reset on a Sony Ericsson Xperia Pro (MK16i) using either the software settings or a hardware key combination if the device is locked.
If you can access the menu, this is the safest way to wipe your data: Go to the from your home screen. Select Settings > Privacy . Tap Factory data reset > Reset phone . Enter your password if prompted and tap Erase everything . Method 2: Using Hardware Keys (If Locked) Sony Ericsson Xperia Mk16I Hard Reset
Once the LED light changes to or the phone vibrates, release the buttons. You can perform a hard reset on a
A hard reset will permanently delete all internal data. Ensure you have backed up any important files before proceeding. Hard Reset SONY ERICSSON Xperia Pro MK16i Tap Factory data reset > Reset phone
Press and hold the buttons simultaneously.