Oooh. Ohhh. Lineage 15.1 (testing)

[Stefan]

@Zebrafax

Is there a workaround to poweroff the phone?

Take the battery out.

@Zebrafax

And how can you get to TWRP if the reboot to recovery doesn’t work?

See dic:recoverymode :

@paulakreuzer

You can reach it by turning off your phone, unplugging all cables and pressing power and volume up at the same time.

Or type adb reboot recovery when you are connected to a PC.