Dumb-phone suggestions?

Lately I have been having a lot of fun playing around with mestastic devices, older phones, and so called "dumb phones". I dont plan on getting rid of my current smart phone (at least any time soon) but I do want to see how it feels to go back to a dumb phone.

Anyone have a preferred dumb-phone setup that still works with 4G?

I want to be able to:

1. Make/receive phone calls
2. At least be able to see texting
3. Replaceable battery
4. (optional) some sort of directions (google maps/OSM+ etc...)

Things I have looked at:

• Ive been looking at some of the new Nokia offerings and it looks like they are going full retro which I like. I just dont like how thin the plastic looks. It looks like the phones could die at any point.
• I took a look at https://www.wiphone.io/ and that looked neat, but no GSM (phone calls outside of wifi) so thats a no go.
• https://dumbwireless.com/products/punkt-mp02 looked almst perfect....then I saw you can repair the device or replace the battery.
• https://dumbwireless.com/products/light-phone-2 looks nifty but again cant replace anything.
• Sunbeam F1 Horizon might be a good fit given that you can take out the battery but the price is a bit steap.

What do you all think?