My OP3's screen just got broken, and the power button got broken too some time ago. I can't use touchscreen nor see what happens on it (it's completely black), and for some reason ADB debugger is turned off. A real mess. I will send it to repair to OnePlus' center, but they will delete everything I have inside (for some reason that I still don't understand). It's something like a mission impossible, but does anyone have some idea on how i can backup my data before sending it?
I tried to turn the battery empty and turn on the phone in recovery mode (volume down while plugging the USB inside the PC), but "adb devices" doesn't find anything even like that.