The iPhone 12 Pro rear camera module carries three sensors and an optical image stabilisation magnet assembly. When it starts to fail, the symptoms can be dramatic or subtle. Here are the five signs that tell you it is time to order a replacement module.
The five signs
- Shaky preview in the viewfinder — the OIS magnet is loose and the sensor is vibrating on its suspension.
- Black image when switching to 2x telephoto — the telephoto module has lost communication or died.
- Focus hunting in good light — the autofocus coil cannot settle, usually because the optical bench has shifted after a drop.
- Camera app crashes only when zooming — a failing module can draw enough current to crash the ISP.
- Audible rattle when the phone is rotated — the OIS magnet is physically loose inside the module housing.
What to order
The 12 Pro module is not interchangeable with the regular 12. The Pro adds the telephoto lens and a larger magnet assembly. Order the exact rear camera module for the iPhone 12 Pro — generic "12" modules will not seat or calibrate correctly.
Post-swap verification
- Test 0.5x, 1x, and 2x switching
- Record 4K 30fps for one minute — watch for overheating or crash
- Take photos at 10 cm, 1 m, and 5 m to verify focus range
- Check Portrait mode edge detection
FAQ
Can a single lens be replaced? Not at shop level. The three sensors share a single flex and housing; replace the whole module.
Does the module need calibration? Apple calibrates each module to the board at the factory. Aftermarket modules relearn over normal use; original-spec units settle fastest.