Hello,
I have an issue with repairing my iPhone 12 and I'm stuck at the moment.
I refurbished the display as a hobby, but now I'm getting a "Face ID not available" message when I try to configure Face ID by going to Settings > Face ID & Passcode > Configure Face ID and then tapping on "Get Started". It briefly appears as if it's working, but before the scan begins, the message pops up. In General > About, I'm also alerted to the Face ID issue.
I have restored True Tone and auto brightness is functioning as well.
I have already cleaned all the sensors with alcohol once, and I've also tried setting up Face ID without closing the display, ruling out any contamination on the display as the cause. In Portrait mode, the Natural Light option is grayed out and not highlighted in yellow.
For the repair, I have i2C i6s and an SK Box. I'm not proficient in micro soldering yet, but if that's the only way to fix the issue, I'm still interested in knowing what exactly needs to be soldered.
It would greatly help me if someone could help me out and let me know if I need any additional tools for this.
Thank you in advance.