Firstly Samsung duos is high cost with low ram facility. Phone struck when we use more apps and playing games. Battery capacity too low. Battery will over with in 2hrs when we use data. And it’s feature not nice. Phone is to be charged every time. And I changed my battery two times in 1yr and now I changed my mobile. Phone ram too low and doesn’t respond when multi tasking is done. Phone should be reset every time. Phone cost is too high low features. And my suggestion is not to prefer to Mobile.