Samsung galaxy core prime is one of the best phone for me I am useing it from 2 year and I am telling you frankly I havent faced not even single problem.i brough it for rs 9200 .it has 4.5 inch scree and 8gb internal memory and you can expand it upto 128gb and 1 gb of ram and 2mp front faceing camera and 5 mp rear camer which gives you decent photo quality.and I had experianced lag free experiance in hevy games also for system memory it consume around 3-4 gb of memory my suggesion is better to use mermory card to better result .in the box we get handset battery.charger.earphone.datacable.and some paperwork.