http://adexmart.com/mobile-phones/7389- ... l-sim.html Specifications of Samsung Galaxy Grand Duos Form Bar SIM Dual SIM, GSM + GSM, (Dual Standby) Touch Screen Yes, Capacitive Business Features Document Viewer, Pushmail Call Features Conference Call, Speed Dialing, Hands Free, Loudspeaker, Call Divert Handset Color White Platform Operating Freq GSM - 850, 900, 1800, 1900; UMTS - 2100 OS Android v4.1 (Jelly Bean) User Interface TouchWiz 4.0 Java Yes Processor 1.2 GHz, Dual Core Display Size 5 Inches Resolution WVGA, 480 x 800 Pixels Color 16 M Other Display Features Multi-touch Camera Primary Camera Yes, 8 Megapixel Secondary Camera Yes, 2 Megapixel Flash LED Video Recording Yes, 1920 x 1080, 30 fps HD Recording HD, Full HD Zoom Digital Zoom - 4x Other Camera Features Auto Focus, Geo-tagging, Touch Focus, Face and Smile Detection, Image Stabilization, Image Editor Dimensions Size 76.8x143.5x9.6 mm Weight 161 g Battery Type Li-Ion, 2100 mAh Talk Time 10 hrs (3G) Standby Time 440 hrs (3G) Memory and Storage Internal 8 GB Expandable Memory microSD, upto 64 GB Memory 1 GB RAM Internet & Connectivity Internet Features Email Preinstalled Browser Android GPRS Yes EDGE Yes 3G Yes, 21 Mbps HSDPA; 5.76 Mbps HSUPA Wifi Yes, 802.11 b/g/n USB Connectivity Yes, micro USB, v2 Tethering Wi-fi Hotspot GPS Support Yes, A-GPS, GLONASS with Google Maps Bluetooth Yes, v4, Supported Profiles (A2DP, AVRCP, GAP, HFP, HID, OPP, PBA, PBAP, SAP, SPP) Audio Jack 3.5 mm Multimedia Music Player Yes, Supports FLAC, MP3, WAV, eAAC+ Video Player Yes, Supports H.263, H.264, MP4, WMV, HD Video Playback FM Yes Ringtone 128 Polyphonic, MP3, WAV Other Features SAR Value 0.316 W/Kg Call Memory Yes SMS Memory Yes Phone Book Memory Yes Sensors Accelerometer, Compass, Gyro Sensor, Proximity Sensor Additional Features Predictive Text Input, Calendar, MMS Enabled, Mini SIM, Clock, Calculator, Call Barring, Call Waiting, Offline Mode, Own Number Indication, Voice Input Important Apps Google, Gmail, YouTube, Google Talk, Picasa, Instant Messaging In Sales Package Battery, Charger, Data Cable, Flipcover, Handset, Headset VAT Bill with 1 year manufacturer warranty All products sold on adexmart.com are brand new and 100% genuine. pc-