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Repair and disassembly information for Google's Pixel 7 Pro smartphone, released in October 2022. Identified by model number GP4BC and GE2AE.

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Screen replacement questions when running Graphene OS

Hello everyone,

I recently acquired a new screen to replace the broken one on my Pixel 7 Pro, but there are some things I'm worried about since I run Graphene OS on the phone. Although I don't think it would impact the process whatsoever, I thought I should ask anyway before the part arrives just in case:

  1. When initially swapping to the new screen, it's stated not to touch it before the first boot for it to perform some extra calibration. Does it actually need to boot into the stock OS for this calibration to be done? Or does the calibration happen before booting into the OS altogether?
  2. After installing the screen, I will need to go through the whole fingerprint calibration process. Can that be reliably done when using a custom OS? I've seen some posts around of some managing to do it, but when people are having trouble with this process even with the stock OS, I honestly have no idea.
  3. This third one is more of a general question, but when testing out the fingerprint calibration tool at pixelrepair.withgoogle.com, it asks me for a country and carrier. Although I bought the phone in the US, it's not carrier-locked. Which option should be chosen in this case? US -> Other? Other?

Although there's nothing critical on the phone that would prevent me from factory resetting it, I'd rather not go through that unless necessary.

Thanks in advance.

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So, my spare screen has been sitting around for some time, and decided to just go with the repair anyway. That turned out to be the right choice, since everything went accordingly. Here's some insight about what I found out:

  1. After the repair and some playing around/testing, I believe whatever initial calibration process that was needed, was performed successfully since I couldn't find a single problem (offset touch, part of the screen not responding, among other common problems people usually complain about). The underlying OS the phone is running doesn't seem to impact the initial calibration whatsoever, as far as I could tell.
  2. Although I was pretty unsure if this one was going to work under a custom OS, it actually worked flawlessly. After updating the phone to Android 14 (build UP1A.231005.007), I followed the described process, and the fingerprint calibration software was installed and ran.
    1. I did get a screen indicating no bootable OS was found after restarting the phone to complete the process (see below), but it went away after restarting the phone two more times. I am unsure if this was caused by the custom OS, or by the fact that I had just updated to Android 14 before performing the calibration (people were complaining about issues with 14).
  3. This one was a mistake on my part, as I was using the wrong address to begin with. pixelrepair.withgoogle.com seems to bring you to a general system update page, while pixelrepair.withgoogle.com/udfps, the correct one, is the one used for fingerprint calibration specifically.

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In the end, it seems that screen replacements work all the way just fine with Graphene OS and a genuine screen. The underlying OS most likely doesn't matter to the process, so it could possibly work on any custom OS, but that would need to be tested separately.

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