OnePlus 9 Pro Battery Replacement

Unplug any chargers/peripheries and power off your phone.

Use a hair dryer to lightly heat the perimeter of the rear glass.

Additionally, heat the top-right corner, as there is adhesive further inside of phone in that one spot.

Apply a suction handle as close to the bottom edge as possible.

Pull up on the suction handle with strong, steady force to create a gap between the glass and the frame.

Insert an opening pick into the gap.

Slide the opening pick around the perimeter of the rear glass to slice the adhesive.

Insert additional opening picks as you slice the adhesive to prevent the adhesive from resealing.

Carefully lift the rear glass up and off of the phone.

Use an opening pick or tweezers to carefully peel back the adhesive on the bottom of the wireless charging module.

Pry on the bottom of the flash module off using a pick and use tweezers to get under the module without ripping it.

Use a Phillips #000 screwdriver to remove the eleven 4.8 mm-long screws securing the motherboard cover.

Pry around the phone with picks to remove the motherboard cover.

Lift off the motherboard cover.

Pry up and disconnect the press connector ribbon cable in the top right with a spudger.

Use a spudger to disconnect the two interconnect cables from the motherboard by prying the connector straight up from its socket.

Remove the battery from the phone by slowly pulling up on the red tabs.