If your on EE then forget about getting your phone unlocked. It took me over 2 months and towards the end I had to really badger them. They do it to try and keep you locked into their network for another month or two. Worst network in so many ways.
Hence the reason EE locked phones get such a low price on trade in's. Envirofone offer much lower price for EE (and pf course Orange/T-MObile) locked phones. Most of the other networks are the same price as unlocked.
I got 4! Only reserved 1!
I went on Apple chat and they could really elaborate why but suggested calling the store direct to check. I can't really be bothered - will just see what happens in the morning!
Also the chat guy recommended backing up iPhone before upgrading to iOS 9.0.1. as someone suggested earlier teh 6s/6s+'s will be arriving with iOS 9.0..................... Seems little point in bothering to do it all all on old phone since I'll be sending off to Envirofone tomorrow.