Samsung is one of the top mobile manufacturing company in the world. This company falls in one of the three top mobile manufacturing companies. Their S series mobiles are very much popular all over the world. They are launching updated version of S serious in almost every 5 months.
The latest series is S6. I am using S3 since last 1 year. Its functions are very good. The camera feature is superb. You can play every games with ease and fast. But its battery is not good. Only 4 hour lasted if you play games. You can play videos upto 9 hours with full battery. After all it is good mobile.