Storage Capacity ( Internal) 16 GBModel 3S Touchscreen , Primary Camera13.0 , Operating System Android Secondary Camera 5.0 mp Warranty Manufacturer Warranty Sim Type Dual SIM( GSM + CDMA) Duration1 year RAM 2gb. Its awesome mobile for average used. Its clear camera 13 megapixel and 5 megapixel . Its not costly . Its easily to use . Its ram 2 gb . For save our data. U like this phone. Operating system is good. Warranty to one year. Manufacturing is good and liable to used . Its dual sim phone . Gsm and cdma . Both sim are applied this phone.