Oneantwo 1+1=2 brand is the most trusted brand in today???s indian market with wide reach in all the segments of world. people from round the corner are buying the products of oneantwo and have trusted its quality and after sales services provided. the mobiles are bis certified and sar certified and has 1 year manufacturer warranty. this model of oneantwo d4 has 2.4 inch big display and has resolution of 240*320. network supported is gsm+gsm and has dual sim slots. 64 mb is the internal memory which can be expandable upto 16 gb through sd card and 32 mb is the ram of this phone. 0.3 mp is the camera of the mobile. earphone jack: 3.5 mm, usb jack 5 pin. long lasting battery of 2000 mah which is beneficial while travelling also where your smart phone runs out of battery soon, there comes this phone which helps you to be connected to your close ones. other features: bluetooth,fm radio, highlighted torch light, audio/ video supported. vibration supported: this helps to know that someone is calling even when your phone is on silent mode.