So far here are my observations: The build not as 'solid' feeling as iphone, sound not as good while listening to music or audio books, pictures and screen is awesome...I like the s pen, had to do update (att) I think it was lollipop, (how can you tell what os you have)? and my battery went immediately from 100-85 %!!! this is quite unacceptable...does it get better? Oh, and I did a factory reset right after the update, I think I read that somewhere...gonna play this phone is really nice want to try some video