I upgraded from an iphone 5 and have to say that has been the best iphone I have used !
Very thin and light weight phone, great display
Very classy phone
Best part is the fingerprint lock ! Faster than iphone 5 and iphone 5s
The battery is also better than earlier iphones hardly takes 1 hour to get full 100 charged
Batter save mode is also there and some new features like night mode etc
Bigger hd display 4.7 inch unlike samsung phones which are so big that they cant get fit in pocket so size is perfect looks classic in hand
I would definately reccomend iphone 6 over samsung big screen phone or any cheap phones : )