My understanding is that black holes naturally evaporate, releasing energy and sometimes matter out through their polar jets. I believe this is called hawking radiation. Now proton sized black holes can exist (I believe we’ve created them in the LHC), but at that size, the hawking radiation makes the black hole evaporate extremely quickly, like within nano seconds.
In other words, tiny black holes are very short lived, they rarely have time to absorb more material and grow.
Edit: well it seems that I was definitely wrong about hawking radiation having anything to do with the polar jets. But I just double checked and it looks like everything else I said is pretty accurate. I’m not sure why the 1 minor inaccuracy was worth downvotes, but whatever.
Back before smart phones I always preferred flip phones over “candy bars”, the flip phone helps to protect the delicate screen and buttons while the phone is in your pocket/purse. You don’t really need a case for a flip phone.
Modern smart phones tend to be more delicate than they should be across the board, but in theory, a flip phone puts the more delicate parts in a safer place.