Chosen Solution
Hello guys,i bought new display and changed it in my iphone 12 pro. After change i can’t change brightness level (when i changed it up or down, brightness level still same) and true tone doesn’t work as well. I read some articles but did not find how to fix it. I have also jcid machine to read and write data from old display to new display but i also read iphone 12 pro is not supported …. Any tips please ? And sorry for my english.
I know Qianli has a TrueTone Programmer but I’m not sure it works with the 12 series. If the device can’t communicate with the ear speaker components it can lead to a low brightness issue. Take it apart, and examine that it’s not damaged and properly connected. If it’s damaged, you can replace that assembly but FaceID will be lost permanently.