I am using this mobile samsung galaxy grand prime 4G and it is OK .please note these things-
1-battery life is too good.
2-front camera and back camera both are clear.
3-creamy in use.
4-sometimes hang and automatically switched off problem.
5-you can experience the best sound by using this mobile.
6- price are too less by looking at its features.
7-take less time to charge the battery.
prefer to buy.