Regularly delete stuff, you dont want your sd card popped out and accessed. The devices are encrypted but the sd card is not … At least my device doesn’t have that option. I also ensure I have backed up my 2FA codes if the phone is lost or stolen, you dont want to be locked out of your accounts. freeOTP+ allows you to export them.

I used to cover them camera with tape but I have to many signal video calls for that to be workable.