(T3 worked for me)

The back cover I bought didn't include the sensors (fingerprint and camera flash) and a grommet thing over one of the speaker holes, that are attached to the back cover. So I had to transfer those pieces myself. I needed to use heat from the iOpener to soften glue that was holding them on to the old back. The replacement back seemed to have replacement glue in place under peel tape. I didn't replace the glue holding the screen, instead heated everything up with the iOpener when replacing the screen in the hope that the old glue will still work, fingers crossed.

I suggest following this other guide instead, to replace the fingerprint sensor, is the same with two extra steps (but still need to swap the flash and ‘speaker grommet thingy' as well as the fingerprint sensor):

Google Pixel 4a Fingerprint Sensor Replacement

If the hole is truly stripped then the technique in this guide won't work because the hole would then be larger than it was originally and the tap won't bite into the metal and therefore not cut any new threads. So then there are two options:

.

1. Choose the next larger size bolt and drill and re-tap the hole to fit that larger size. Or if you really must use the same size bolt then:

.

2. Use a helical insert (aka "Helicoil") which is a coil of hardened steel wire that forms both a outer and inner thread.

.

I used option #2 to fix a stripped hole in a bicycle shock absorber. I bought the Helicoil kit sized for my bolt from a automotive supply store. The kit came with the drill bit and tap sized for the outside threads of the coil. I drilled the hole, tapped the threads, then threaded the coil into the hole. The inside diameter of the coil was sized to fit the original bolt.

How long did the CR2032 battery last in use?

I'm thinking not very long so I'm considering attaching a CR123 (big 3V photo lithium battery) holder to the underside and wiring it in.

Thanks for the guide!

Rajat, for any repair the battery should be removed first. Its easy to accidentally short out the battery when using screwdrivers to loosen screws.

Thanks much. Bought the replacement button input on eBay and followed your guide, no hitches, I have a power button again!