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How to Hard Reset Sony Xperia Z1s Using Buttons

1. Switch off your device. If it is frozen, remove your battery and insert it again.

2. Keep the device turned off, then press and hold the Volume Up and Volume Down buttons.

3. Then press and hold the Power button (just keep on holding the volume buttons). Keeping those three button pressed, there should be a menu will appear on your phone.

4. Press the Volume Down button to navigate to the Recovery option. Press the Volume Up to select (if that doesnt work, use the Power button to select).

5. An Android logo will appear. Press and hold the Volume Down and Volume Up button together and the recovery menu should appear.

6. Use the Volume buttons to move to the Wipe data/Factory reset option and then press Power to select.

7. Use the Volume Down key to choose Yes and press the Power button again to select.