Its been 2 years using iphone 4s 16gb Model, And what I think is . I’m not gonna recomend it to other user’s my freinds or family. The reason is its processing speed. it hangs too much. I precisely bought it because of the affection I was having towards iphone thad its speed is awesome. well that’s irony about dis moment, but this phone had not satisfied me yet. during the last 2 years I felt so many inconveniencies because of the slow startup of any app. and when there are 10-15 external apps on this phone this starts hanging, I really am not going to appreciate it. though the sound quality is very impresive but camera quality is not good enough. also its battery backup is not that much to my expectation. and if the hotspot is on, then battery drains like liquid through the fist. and I hate it the most.