The description for this K&F Concept Clip says "[Widely Compatibility] The clip can be clamped on most smartphones"

I have a Samsung A51 (the older 4G model) with an otterbox case. There was no way to attach this without removing my otterbox case. Note that I have another phone lens ND filter with a clip instead of this screw mechanism which is able to attach with no problems with or without the otterbox. Speaking of without the otterbox, my phone was too thin for the clamp, having the same problem as the next device I tried it on below.

So I tried it on my Samsung Galaxy Tab S9. I don't have a case on it. Again, no luck. my tablet is too thin. The screw mount pad, when fully tightened, still doesn't touch the screen with almost a 1/4 inch gap remaining. I might be able to get this to work with a felt furniture slider pad, but that is not ideal.

Finally, I tried it on my Pixel 6. Surprisingly, I could get it to fit even with the case still on. I thought the Pixel camera bump would not work with this, but it is ok(though not an ideal fit).

So in summary, unless you have an iphone that they list, you're taking a chance on this one.