Agreed ( I have the S24 ), My previous phone was an S21 and the NFC antenna was “not bad”, then I got a Hammy 2.1, and yep, it was A MUTHA FUCKEN GAME CHANGER, such easy reads, The NFC antenna was probably 1/3 the size of the back of the phone near the bottom, and the 2.1 did a perfect overlap, however, My S24 NFC antenna is in the same location as yours, top corner alongside the camera lenses, and about 1/2 the size of the S21.
The Hammy V2.1 wont fit there without covering the lenses BUT I still had a spare V2.1s ( smaller of the V2.1 ) it still works great, and made what was a good phone upgrade with a shitty and disapointing NFC performance, into a great upgrade all around.
THIS is why, I nicknamed these as MFGC
A Hammy sticker will replace it SOON™, but for the time being, no complaints, and I fucken love these things.
FYI I just noticed Hammy has a bundle pack too
Great for options when you can go bigger or have to go smaller