The phone ios is so smooth it never lags n the best camera phone ever
the selfies taken out to be the best
you can compare it with anyother phone in the market
the retina dispaly works gives an extra edge to the phone
the processor helps in multitasking
you can do so many tasks without any lag
and apple always provide the stable updates time to time
I will recommend this phone over the android phone if you want smoothness but with some limitations