I received 6 instead of 3, so not too bad. These are indeed of screen protectors for iPhone 3G and iPhone 4. So not the hole in the ear speaker level is slightly too low, but you do not mind. By cons, actually, the air bubbles are difficult to remove, the first application must be good. On the model I asked, the small plastic tab to separate the screen protector from its plastic holder somewhat stiffer does not leave. So I'll have to use the solvent (remover) to remove the glue. I have no opinion yet in use.
I put 3, but it deserves 2.5 / 5. Neither really disappointed but not really surprised.