Can some people list reasonable use cases for a bi/trifold phone? I am sure they can but 99% of people absolutely don’t need a bi/trifold phone to browse social media or the internet, make calls, send text messages etc.

Well the biggest use case is everything you would use a tablet for without having to carry a tablet. For me personally, it’s the first and only tablet I actually use with regularity, I have SO many tablets I’ve bought in the past that ended up collecting dust in archive for the simple reason that they’re not around me when I needed them the most. So by your reasoning, the entire tablet category is unnecessary

micro SD card, rf receiver, headphone jack, a phone OS that isn’t bloated spyware, that I can drop from more than a couple feet on accident and not worry about it being a health hazard. (A good stylus is a plus.)

MicroSD card and the headphone jack is never coming back outside the niche categories, though as the Foldy tech matures it could come within reach of one of those niche manufacturers

RF Receiver? Unsure what you mean here, do you mean FM Radio?

For an unbloated spyware free OS you’ll have to pickup a Pixel and flash GrapheneOS to it, which both of the Pixel foldy offerings are fully compatible with

Samsung is also rumored to be working on getting a stylus into the Foldy line up, though it is fairly tricky with the space constraints of a foldy

What do you mean by “health hazard”?