Samsung Galaxy Star Duos phone has no battery backup, repeateadly we need to charge this phone, Playstore doesn’t work in this phone, and always this phone use to struct more than other phones. And we can’t use google properly, there is no gorilla glass to protect the screen. It has internal storage capacity is very low, We cant install more than 5 Applications in this phone. This is old version and old series phone, there is no good out look of this phone.