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2022年10月に発売されたGoogleのスマートフォン「Pixel 7 Pro」の修理・分解情報です。モデル番号はGP4BCとGE2AEで識別できます。

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Intermittent touchscreen issue after any minor drop

An interesting (albeit frustrating) issue recently manifested with my Pixel 7 Pro, and I can't seem to find any other reports quite like it via Google. I'm hoping someone on this forum is familiar enough with the hardware under the hood to give me an idea of what might be happening and what, if anything, I can do to mitigate this.

The issue occurs after any minor drop, and it has occurred multiple times now in the same way. After a minor drop (~2 feet w/ case), the screen at first becomes completely non-responsive -- just black. After about a minute, the power button will cause the screen to turn on, but the touchscreen will not work at all. I can force restart the phone at this point using the power + volume up button procedure, and the screen comes back on, but the touchscreen still doesn't work at all. Eventually, after multiple restarts and several minutes to half an hour of waiting, touchscreen functionality will come back, seemingly at random. At first it's hit-or-miss, failing intermittently only to come back just as suddenly. Eventually it goes back to normal -- but another minor impact will start this process over.

What's going on here? It feels like some kind of loose connection perhaps, but is there anything I could check? It seems odd to me that the phone seems to "get better" after a rest period, almost like the drop is resetting something that needs to "heal" before it works again. Obviously, that's not how electronics work, but I can't explain it any other way.

Any insight would be much appreciated!

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Hi Matthew,

There's really only one thing to check, and if it's not that then all that's left would be to replace the screen. On the 7 Pro, unlike my 6 Pro and earlier models, the retainer for the display connector is held in by spring tension, rather than being secured by a screw. Here's a picture of your retainer.

Block Image

And mine.

Block Image

Of course, the only way to check it is to remove the screen. That single connector carries the signals for the fingerprint reader, the digitizer and the OLED display, so if that's the problem then it's still almost completely connected, just not quite.

You'll want to follow the screen replacement guide to open up the screen. Obviously the first thing to check is the retainer; although it seems unlikely, it's theoretically possible for the clip to come loose from a sharp impact such as a drop. If that happens, the force required to jar the retainer loose would probably also be enough to pop the connector out of its socket. So if it's just sitting in the socket without being clicked in completely, that could explain your issues.

Google Pixel 7 Pro Screen Replacement - iFixit Repair Guide

I'd say open it up and verify whether the bracket is in place or not. If not, that would reinforce the theory that it's just a loose connector. Either way you'll want to go ahead and unplug the connector. Get out your magnifying glass and a nice bright light and check the pins on the motherboard and the connector, looking for anything bent, missing or broken. Bent pins can sometimes be straightened with some fine tip tweezers, but obviously missing or broken pins are a more serious issue.

Assuming it all looks good, clean both sides with some 90% or higher concentration isopropyl (rubbing) alcohol, give it a moment to dry then plug it back in, fix the bracket in place and test.

As I mentioned, if that doesn't work then about all that's left is to replace what would appear to be a defective or damaged digitizer. Since it's fused to the display, you'll be replacing the complete screen assembly.

Give that a try and let us know what you find. Good luck!

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Wow, this is so helpful! Thank you for the detailed response.

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Matthew Vreeland さん、ありがとうございました!
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