Latch It! App (Lock Screen) for Android
Once enabled, the application runs in background and automatically starts up when the boot is completed.
Note: Enable the app before start to using it
Note: Disable the app before uninstalling it
Further instructions:
1 - Keep the phone plain facing upwards.
2 - Rotate the phone downwards for a while.
3 - Turn the phone upwards again.
That's it...keep latching!