OS‎Funtouch OS 11.1 (Based on Android 11)RAM‎4 GBProduct Dimensions‎16.4 x 7.6 x 0.8 cm; 182 GramsBatteries‎1 Lithium ion batteries required. (included)Item model number‎Vivo Y21Wireless communication technologies‎CellularConnectivity technologies‎4gSpecial features‎Rear Camera, Front Camera, Dual_Sim, Fast ChargingOther display features‎WirelessDevice interface - primary‎TouchscreenOther camera features‎Rear, FrontForm factor‎BarColour‎Midnight BlueBattery Power Rating‎5000Whats in the box‎Model, Documentation, USB Cable, Charger, Card Eject Tool, Phone Case, Protective Flim (applied)Manufacturer‎Vivo Mobile India Pvt LtdItem Weight‎182 g