How many back up screen protectors do I need? well pretty much as many as the amount of times i end up dropping it in a week :p, definitely saving money installing my own versus going to the store to get it done! I'm on the 2nd one already :P #rankboosterreview #clong #sponsored get yours here ->https://www.amazon.com/iPhone-Screen-Protector-CLONG-Tempered/dp/B075BM4NYG