I've had one of these for about 6 months and I absolutely love it.
https://www.amazon.com/gp/product/B07KP8J8YN
Disclaimer: I have NO affiliation with this company at all. I'm just a happy user.
Pros:
- built-in rugged case. I've thrown it around the office with no issues
- incredibly small. It fits in the watch pocket (fifth pocket) of your jeans comfortably
- waterproof. Because it fits in my jeans pockets so well, I accidentally washed it with my jeans after a spill. The only piece of clothing in that wash cycle was my jeans, and the phone fell out at some point. It must have banged around in there for 15 minutes; but after the wash was done, I grabbed the phone and unlocked it with my fingerprint. No worries.
- some of the best BT and GPS I've experienced in an Android phone. (And I've owned Nokia, Motorola, and Sony Xperia phones).
- reasonable battery life for a phone of this size
- everyone tells me speakerphone sounds great
Cons:
- the camera is literally a potato. Don't buy this to take photos with.
- good luck typing on this incredibly tiny screen. But instead I use Android's voice-to-text which works great.
I took a chance and it is an absolute marvel.