Thankyou Fiona26, I've never removed a plastic protector on my phone, or any others to be honest, but, tonight when folding I heard a crackling noise like hardened dried plastic, and from the top - 3/4 of the way down near the fold line, is now what looks like air bubbles under a plastic screen protector, and lifting...so a bit worried now, especially after reading what you've posted. But thankyou for your help. X