Step 1: First turn off the phone, then use the card needle to remove the SIM card;
Step 2: The OPPO R9 uses a metal integrated body design, the screen panel and the body are fixed by the two screws at the bottom, and to open the back cover, you need to unscrew the two screws at the bottom first, and you can easily remove it with a plum screwdriver.
Step 3: The back cover of OPPO R9 is fixed with screws and clasps. After removing the fixing screws in Step 3, you need to use suction cups,
Just pop the shell open.