Purple rice mobile phone flashing screen, how to do, also can't backup.

Can the landlord's mobile phone be turned on? Since the mobile phone can't be operated, the landlord can still use the computer to back it up. As long as you can turn on the usb for debugging or have turned it on before, you can directly download a computer version of the application treasure, connect the mobile phone and the computer with a data cable, and back up the data in my mobile phone toolbox. You can send messages to contacts. If it is music or video, the landlord can directly export it at the corresponding location. And it's safer and not easy to lose.