iPhone 8, 8 Plus and X customers should read the following;
We are tracking two issues with screen replacements for the iPhone 8, 8 Plus and X models. First and most important is IOS 11.3 and above has a problem with aftermarket screens. Most screens available to the repair community are aftermarket, these screens are new made by companies like Sharp and LG. All screens possess a chip that controls the touch screen, currently IOS 11.3 disables this chip on the aftermarket screens leaving you with a phone that cannot be used. Our suppliers have already replaced all our stock with new aftermarket screens that have addressed this issue and have been verified on 11.3 as well as the pre-release of 11.4. So far the new screens are working and we are in contact with past customers to get them switched out. What is unknown is if the new screens will stop working down the road with newer IOS versions. This is something we or the manufactures have no control over as Apple is making the changes to IOS.
We do have the option of using refurbished screens, these are original Apple screens that have been refurbished to like new condition, they have new glass but use the original LCD and controller chips. At this time we are matching Apple's prices on the 8 and 8 Plus models, ask us for more information or to see a side by side comparison. For iPhone X owners we are suggesting you take the device directly to Apple until our costs come down.
The other issue deals with the ambient light sensor, it looks like replacing the screen on the 8, 8 Plus and X models will disable the device's ability to adjust brightness automatically. This is regardless if your using an aftermarket or refurbished screen. In testing even taking two identical and all original phones and simply swamping the working screens between them the automatic brightness control was disabled. At this time there is no work around or fix for this issue.