I am using oneplus one since 2015.It is good smart phone on that time.good camera, super performance, suffienct storage( 64 gb) .it has high screen resolution.i had get update up to android marshmellow 6.01 the resale value of phone is very low.it does not have volte technology.but at that time when the phone is released the volte is not popular.overall I like the phone very much