1720
It's official: Smartphones will need to have replaceable batteries by 2027
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
What they really mean is "very slightly thinner than the previous generation or current rival because we think that's a super marketable thing still even though we've reached the practical limit where it no longer makes sense to go thinner."
Meanwhile the phone can't lie flat on its back because the camera protrudes.
Solution: add phonecase! Or just have better (and slightly bigger) internals to make backside level...