Wow, same here on an iPhone 12! I have the monthly AppleCare+ on this phone, which came in handy when my earpiece seemed to not work at all. I thought I had the problem detailed here, (my original 12 was acquired during holidays in 2020/2021) but had long-since missed that (premature) cutoff date. Went to local Apple Retail Store, and they had to replace the whole front, apparently? Sound worked GREAT in earpiece, but just as I was walking out the revolving door, the phone decided to tell me that Face ID had an issue, so I turned around and they spent another hour or so trying to fix it to no avail. SInce I had been to this store with the phone the month before with another (camera) issue, I hit the 3's-a-charm limit where they decided to just replace the phone, and since the problems seemed to be on the system board at this point. Anyway, got my new 12, restored fine (I use laptop, not any cloud nonsense!) but now the earpiece is low-volume useless junk almost as bad as what prompted trip 2 of 3 in the first place (yeah, did not think to try it at the store - after all it was BRAND NEW out of the white OEM box). Seriously?! My closest Apple Store is almost 2 hours away - this is insane (and who the heck is gonna mail their phone and have none at all for a week+?!). I am stuck using Speaker only now for calls, which is RIDICULOUS. Now I gotta spend my time going BACK to the store AGAIN? This is NOT the Apple I've known, and it keeps getting worse every year/release since October 5, 2011...no one is "eating their own dog food" (not really/fully) in Cupertino anymore. It's just push, push, push something out every year, come heck or high water and no matter all the bugs. That's what dot releases are for, right?! Welcome to the Microsoft way.