Samsung galaxy or its j series after 1 year the condition became the same old phone. I am sharing my own experience. In 2014 October I bought samsung galaxy grand 2 with the exchange of my old phone. It was 13000/- I liked the Phone design so decided to bought. One year it went well, from 2015 December its services slows down. Sometimes net not working, sometimes it hang while I am talking, sometimes touchscreen display not working.
After restart it starts again. So I understood that its not about to change phone every year because again if I am buying same condition will happen. Galaxy has launched new version galaxy A5. Its nothing have new innovative technology. same old ram, super amoled , only the camera is 13 megapixel so the price became double now its cost 29400/-. I dont feel any usage to buy new model or new phone. Samsung galaxy model also same.