u/DotDodd

P9Pro Fold Fingerprint Scanner Stopped Working

The fingerprint scanner on my Pixel 9 Pro Fold has slowly overtime become more and more unreliable. For the past 4 months my device would not even recognize there was fingerprint hardware. When I tried unlocking my phone I wouldn't even get haptic feedback that it didn't recognize my finger, it just did not work at all.

Recently, in the past 2 days, the scanner has ceased working almost entirely. When I would unlock my phone, I'd get the haptic "buzz" saying my finger wasn't recognized. It didn't matter what registered finger I used, it would fail to recognize it. Today I deleted all of my finger registrations and started from scratch. However, the setup process keeps failing. Every single time with each finger I try, the setup process fails saying "Can't complete fingerprint setup. Something went wrong. You can setup your fingerprint later."

I've tried being slow and deliberate as well as fast and sloppy. No luck.

I've tried restarting my phone in safe mode, no luck.

I've tried factory resetting, no luck.

Has anyone else experienced this? Did you have a fix?

Phone has never been dropped nor water damaged.

reddit.com
u/DotDodd — 5 days ago

This is a review of Keychron's Customer Support and Quality Control, not the product itself.

I received the K2 HE Keyboard in June as a gift in 2025. In October of the same year after semi-daily use, the D key had uncommanded responses. I would press it once and it would activate 4 or 5 times. Eventually activating indefinitely until the keyboard was disconnected. This happened wired, bluetooth, and with the dongle. After some back and forth with customer service and providing a video using their Keychron Launcher to verify the key was not working, Customer Support confirmed they would send out a new PCB once they were back in stock. It took until February of 2026 to receive the new PCB. After replacement, the M key was completely unresponsive. I once again contacted support who were helpful by providing a list full of troubleshooting steps, but ultimately it required another PCB replacement.

It is now May 2026 and I have the 2nd replacement PCB. After fully installing it, it does work 100%. Every key responds to input and has variable actuating distances as expected of an HE keyboard. The keyboard itself, when it works, is excellent. It's solid, lightning fast, and a joy to use.

Keychron's Customer Support was also excellent. They maintained contact, were quick to respond despite a large time difference, and shipped out the replacement PCB's with no cost to me. It's unfortunate it took so long to get my keyboard working properly again, but I'm happy it works now.

Keychron's Quality Control might need some looking into. I get these things are mass produced, and having a bad PCB from the factory, while annoying, happens. But for a replacement PCB to also be bad mens there might be a trend of poor quality control.

Hopefully this helps someone else when it comes to decision making.

reddit.com
u/DotDodd — 20 days ago