Is there any screen protector that won't create residues for rear back camera?

my ringke fusion slim just got scratch with 2 months plus usage. so i've ordered full suit from rhinoshield impact protection front & back, + crash guard bumper case at usd 49.99 now with 15% off for xmas. hopefully its good.

i hope that bulk is not as bulky as ringke fusion because its quite bulky. and it had scratched my left volume rocker button, which i decides to move away.

are majority on 10.2 already? worth to upgrade?

is it normal for rhinoshield back cover to somehow left some residues / gloss feel? i removed my nilkin tempered glass to replaced it with rhinoshield, and it cracked. hmm

can anyone recommend me a screen protector that can be bought either from machines / harvey norman? had used both nilkin & rhinoshield but all failed miserably within 3 months of usage.

speaking of my experience, been using 3 screen protectors for the past 4 months, starting with nilkin tempered glass, it was good, but when my rhinoshield appear, upon lift, cracked everywhere, and rhinoshield is seriously overpriced, got scratched, not even like a month or so, and requires great application skills, so mine was screwed up, so i toss it away, living it with naked, and realized the screen caught some minor hairline scratch, no choice, so i went for x-one, so far so good, hopefully its last.

it's very slow, i just resetted my phone. the backup takes hours to restore.