Been using a flip for four years (Samsung) and will buy another when the time comes (not necessarily Samsung).

Ever wanted a smaller phone? That's a flip phone, it just happens to expand when you need it. Ever drop your phone and damage the screen ? The closed flip phone is super sturdy. Ever wanted to put your phone on the table and use it with one hand, laptop style? Flip. Even in general use, having it slightly bent towards you is a nicer experience that a fully flat phone.

Yes, it has a slight crease in the middle, it has never bothered me even a little. And now, there's an actual microcrack across the crease, doesn't really bother me either, but for some people it might. Look forward to improvements in the next generations.

I had the Flip 2, 3, and 5. I just switched to the Moto Razr Ultra and I feel like it is even better. The external screen works almost like the internal screen, making it extremely easy to use. Samsung locks down their external screen pretty hard and you need a lot of work arounds that still don't give me the same functionality as the Razr.

I also got the Clicks physical keyboard case for it, which turns it into a modern Blackberry type phone. I love it. The physical keyboard means no on-screen keyboard taking up your external screen space. I only actually open my phone a few times a day, which really helps keep doomscrolling at bay. Full discloser, the keyboard isn't perfect and definitely has some quirks and tradeoffs but on the whole I'm glad I got it.

When it goes on sale, I'm going to give it a go with the Moto Razr 2025 with the Clicks keyboard case. Closed, it looks almost exactly like an old Blackberry, but it can flip open to a normal-ish (coming from an iPhone Mini very tall) screen when needed.