How to use On Screen Phone? (the hard way) topic

Things with this device just keep getting better and better, it's amazing and earlier today the glass was cracked, so now the Digitiser is semi broken and I'm unable to unlock my patten lock, to change the USB mode to LG Software, then use On Screen Phone

Are there any workarounds, that involve not formatting / resetting my device please?

Also, I hope to save / backup data before repair too, so suggestions are welcome

Help will be greatly appreciated :)