What features would you like smartphones to have?

This one might be borderline silly because of its simplicity: a through-hole (front to back) for a tripod screw, in the bottom left or right corner. With that you could fix the phone to tripods or other mounts, or put a keyring or cord through it to carry it around.

An integrated stand in the back so I can rest my phone at a 45 degree angle in either horizontal or vertical position.

Two charging ports instead of one. One at the bottom and one at the top. It would be useful when I'm lying down or on the side.

A physical camera blocker I can slide with my finger.

1. A replaceable battery 2. The ability to easily install the operating system I want to use, rather than the one the manufacturer wants me to use 3. The ability to repair and upgrade the phone 4. A death ray or a directed EMP

OK, maybe not #4. Maybe ...

I posted my wants recently and was pretty heavily downvoted but let me repost and add.

My next phone:

Next battery tech, solid state?

88mp cam as this is the threshold for beating film.

depth cam or lidar that can 3d scan things for me.

OS comes with no government spying.

no smarts at all, a phone that is nothing but a phone.