Connecting powered off phone to PC Is it possible to connect (android) phone to PC while it's powered off and browse files on phone? My xperia z doesn't boot, so I may need to flash i,t but I want to have backup from files on internal storage before flashing.
No, while the phone's powered off you can't read the files on it. If your bootloader is already unlocked, you might be able to find a custom recovery that just lets you mount as a USB drive. In that case, booting into the recovery would be sufficient even if the main OS doesn't boot. Of course, if your bootloader isn't unlocked, unlocking it to flash a custom recovery would wipe the storage anyway.