Announced on October 13 and released October 23, Apple's flagship smartphone for 2020 features a 6.1" OLED display, a triple-lens rear camera system with LiDAR, and 5G. Successor to the iPhone 11 Pro.

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Problems with brightness and true tone after screen replacement

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.

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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.


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I replaced faceid from old display to the new display and brightness is now okay. Right now I would like to delete message because of non original display. JCID machine doesn't work to my iphone 12 pro because it is not supporte. It is supported only to iphone series 11. Anyone some another tip please ? :/


@kalis only way to get rid of that message is to either refurbish the old one or have a skilled tech transfer over the circuit chip from the old display to the new one. I wouldn't be too worried about it though.




Tomáš Kalous crwdns2893898:0crwdne2893898:0

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