As all we know apple is the most preferrable brand these days by the youngsters because of the high reliaebility and durable performance .iphone 5s I am using these days which I bought 2 years ago and I am satisfied with its performance and stability.it has one 1 gb of RAM which is enough for the smooth processing of phone .i am satisfied with its 8 mega pixel camera which is very good for getting clear pictures .over all I am satisfied with the phone