This is android based phone in this phone there is problem is hang in software but work is O.K and this phone android veraion is 2.3.6 and his problem is lota of app is not installed this version is very old and some app not installed his battery backup in nice and his camera is not very well and his speaker volume is very nice quality but this phone is not well for 2016 people but I am use this phone and I am change this phone look and my samsung galaxy pocket S5300 is nice I and increase virtual ram and use custom rom