iphone 12 suddenly won't accept passcode, but receives calls, texts, etc.

Update on functionality: I CAN make calls if connected to my car through bluetooth...tried it on a hunch. It's burning through battery like crazy, too. This is not a "me" problem, it's the phone malfunctioning. Did not forget passcode. No. Guarantee it. I see many similar posts on this forum, all with the same comments that are a bit assuming: "you forgot your code". Same code since the beginning of phone passcodes. Not a mis-entry...I watch the little numbers light up under my finger. This is a fairly common issue that Apple has ignored for years (see across the forum). There must be a way to show I am who I am, the phone is mine, everything works except for the passcode screen, seems like Apple should have (and dedicate) some resources to a solution other than: erase it all. We're not all absent-minded, code-losing fools. Hardware sometimes fails. Software glitches (after this, I'm not going to allow auto updates, let others find the glitches instead). And from all the related posts, it's not a rarity. Please find a real solution, not an insult and brush-off.