Phone · Apple · iPhone 12
Apple iPhone 12 Logic Board Repair
Logic Board Repair guide for the Apple iPhone 12
Before you begin
Tools
- P2 Pentalobe screwdriver
- Y000 Tri-point screwdriver
- Standoff screwdriver bit
- Suction cup tool
- Plastic prying tools
- Spudger tool
- Heat gun or hair dryer
- Tweezers
Parts / materials
- Replacement display adhesive seal
- Isopropyl alcohol (99%)
Safety
- Discharge the iPhone battery below 25% before disassembly to avoid thermal runaway risks.
- Wear safety glasses to protect against potential glass splinters if the screen is cracked.
- Always disconnect the battery before unplugging other internal components to prevent electrical shorts.
Overview
Step-by-step
- 1
Power off the device
1 minTurn off your iPhone completely before starting the repair process.
- 2
Remove Pentalobe screws
2 minUnscrew the two 6.8 mm P2 Pentalobe screws located at the bottom edge near the Lightning port.
- 3
Heat the lower edge
2 minApply a heat gun or hair dryer to the bottom edge of the phone for two minutes to soften the display adhesive.
- 4
Attach the suction cup
1 minPlace a suction cup on the lower half of the front glass, just above the home button area.
- 5
Separate the display
4 minPull up firmly on the suction cup to create a small gap, then insert an opening pick into the seam.
- 6
Slice the adhesive
4 minSlide the pick around the edges of the display to slice through the remaining adhesive perimeter.
- 7
Open the display
2 minSwing the display open from the left edge like a book page, leaning it against a stable support.
- 8
Remove the battery cover bracket
3 minUnscrew the four Y000 screws securing the lower connector bracket and remove the bracket.
- 9
Disconnect the battery
2 minUse a plastic spudger to pry the battery connector straight up from its socket on the logic board.
- 10
Disconnect the display cables
3 minDisconnect the OLED display cable and digitizer cable using the point of your spudger.
- 11
Remove the rear camera bracket
3 minUnscrew the retaining screws on the rear camera shield and lift the metal bracket out.
- 12
Disconnect upper module cables
4 minUnplug the front sensor, rear camera, and antenna connectors from the upper logic board.
- 13
Remove logic board standoff screws
5 minUnscrew the standoff screws anchoring the logic board to the back aluminum housing.
- 14
Remove the logic board
3 minGently pry up the logic board from the bottom end and lift it completely out of the frame.
After your Apple iPhone 12 logic board repair
Power the iPhone 12 back on and test the logic board repair function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Apple iPhone 12 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Apple iPhone 12 repair context in the encyclopedia, or open related DIY guides.
