Autofocus does not work after multiple camera replacements.

Have you tried doing a factory reset sounds like an OS issue possibly

Its not an OS issue, its a camera firmware issue. Yes they are compatible for the most part however they are only truly compatible with the use of a programmer. what you need to do is program the new camera housing using the information from the old camera unit that originally came with the iPhone SE when you purchased it.

If you don't have the original part anymore then I would recommend contacting Apple and getting the part from them. They have started offering genuine replacements for certain parts like the front panel screen and cameras for multiple models.

It will be more expensive going that route however since you have already opened the device and replaced the camera before, apple will no longer honor your warranty, not even if you are currently paying a monthly fee every month for AppleCare+.

Hope's that helps

It could also be a foggy lens, try taking the camera module out and wiping the inside camera windowpane down, also, make sure the camera is secure in the housing. On last thing, try cleaning and inspecting the board and flex cable connectors for defects

Hope this Helps :)

The issue must be inside of the camera, as the interface to the camera is all digital, there is no analog focus drive from the motherboard to the camera, digital image and focus sensor information gets sent to the motherboard, then the motherboard commands the camera lens to move digitally, the camera sensor then commands the lens drive motor using analog signals.

So if the image works, then it must be the software inside the motherboard or the camera sensor cannot communicate control messages properly, which suggests this is a firmware issue.

have you considered one of these.....

https://www.mobilesentrix.com/back-camer...

iPhone 8 Rear Camera