Oh I know what that’s like. I got the ESR tempered glass that comes with 3. The first application went perfect only for some odd reason - even though I didn’t touch the inside of the screen protector there was a fingerprint mark on the underside and I was all confused. So I had to take it off and reapply a new one which went perfectly. So weird but I’m glad I had extras!
Love - hate relationship with screen protectors!
I put mine on yesterday, everything was perfect but it seems as I was placing it on the phone itself, it captured a few small pieces of dust, a slightly large piece of lint - somehow in mid air?? It's so cold and dry in this old house now, dust comes out - even with air purifiers running. 😐
I didn't notice it too much last night, but when I was out earlier, sun shining on it...oh it's very noticeable and it bugs me! So..one protector left, gonna try a new install later.
Honestly, I may do this in the bathroom, run hot water so it steams up a little. I think I read this trick somewhere years ago. May help cut down on dust.