Samsung Galaxy Grand duos is a good phone on that time when it release. But after one year it hangs a lot & restart frequently. Grand’s TFT Display is very poor. 2100mh battery is not good for 5inc display phone. Battery drain quickly. Camera quality is awesome with full hd recording. Sound quality is also good. Main issue of the phone is 4gb internal memory out of 8gb. Ram is not 1gb its 800mb which is not good for gaming.