Remove GrapheneOS with broken touch screen

CrazyDiamond

Hello,
I have a Pixel 7 with GrapheneOS installed, and some days ago the touch screen became unresponsive without reason. I would like to factory reset the phone before sending it to warranty, but it seems like I can't do that without using the touchscreen...
Is there any way to reset the device that I missed?
Thanks

Dumdum

CrazyDiamond
https://www.androidauthority.com/android-recovery-mode-3329920/

Pixel Smartphones
1. Turn off your Pixel phone.
2. Once the screen goes black, press and hold the Power and Volume Down buttons together until you see the bootloader screen appear.
3. Use the Volume keys button to navigate to the Recovery Mode option and use the Power button to select it.

CrazyDiamond

Dumdum I don't even manage to turn off the phone... when I try to use Power + Volume Up it will always restart instead of turning off.

Dumdum

CrazyDiamond Power + Volume Up

Its Volume Down, not Up. Just keep holding Vol Down while it boots up and that should work.

de0u

CrazyDiamond Step one is to turn the phone off. Press and hold the power button for a long time (more than a minute). Then proceed to the second step.

CrazyDiamond

Dumdum sorry if it sounds dumb I have practically zero technical knowledge on that, but once I'm in recovery mode I just have a weird android logo saying it's waiting for commands, what should I do next? Do I need to connect the phone to my computer and use abd or something like that??

CrazyDiamond

de0u thanks, I read on some website that it was 30s so that's why it didn't work

fid02

CrazyDiamond sorry if it sounds dumb I have practically zero technical knowledge on that, but once I'm in recovery mode I just have a weird android logo saying it's waiting for commands, what should I do next?

I think this might be the information you're looking for? https://discuss.grapheneos.org/d/9538-how-to-factory-reset-from-recovery-mode/2

CrazyDiamond

fid02 will this factory reset with a GrapheneOS image, or will it put the stock OS back?

Dumdum

CrazyDiamond
With Graphene.

CrazyDiamond

Dumdum and is there a way to reset with the stock OS?

fid02

CrazyDiamond If you have OEM Unlocking enabled, yes.

Dumdum

CrazyDiamond
I'm not actually sure. Sounds like you need OEM to be unlocked before replacing the OS. Maybe you can plug a USB mouse into your phone and use that to unlock the OEM?

fid02

Note that Google's warranty is not broken just because you installed an alternate OS.

CrazyDiamond

Dumdum I tried that but the mouse isn't appearing on the lock screen sadly

fid02

Dumdum Maybe you can plug a USB mouse into your phone and use that to unlock the OEM?

If their USB-C port setting was set to either "On" or "Charging-only when locked, except before first unlock", I would assume so.

With a factory reset, you might be able to go through the setup wizard with a keyboard and mouse connected as well (note that I haven't actually tested this (yet)).

fid02

CrazyDiamond I tried that but the mouse isn't appearing on the lock screen sadly

Can you try with a keyboard? Edit: that might be because of the USB-C port setting.

Dumdum

CrazyDiamond
If you factory reset, I think that should put the USB back to the default "Charging-only when locked, except before first unlock" setting, then you should be able to use the mouse.

fid02

Can confirm that the setup wizard lets you use a mouse and keyboard to navigate, but you have to remove any physical SIM card in your phone because USB peripherals will not be activated until after you've entered the PIN of your SIM.

I could navigate through the setup wizard (after a device wipe) with a mouse, then enter developer options to enable OEM Unlocking.

Dumdum If you factory reset, I think that should put the USB back to the default "Charging-only when locked, except before first unlock" setting

The default setting was recently changed to "Charging-only when locked": https://grapheneos.org/releases#2024061200

CrazyDiamond

fid02 Thank you very much for your help, I will try this out

CrazyDiamond

fid02 Hello, after factory resetting, I tried to connect a mouse with the USB A to C adapter that was in the phone's box. The mouse is turning on (I see the red light) but no mouse is appearing on the screen. Are you also using a Pixel 7? (I made sure there is no sim inside the phone).