Karbonn S320 is very amzing phone .having lot of good and attractive features.its not a phone its a powerbank .the battery life of the phone is amazing it is having a 1.3 ghz processer which will never let the ohon slow down and it has 5.5 inches larger secreen with high resolution one of the amzing feature is this phon is dual sim and suporting various functions such as wifi , hotspot, bluetootj, 3g, internal memory 8gb and expendable upto 32gb and most amzing thing about tjis phone this fits in your budget 4, 449 only