The BLU STAR 4.0 bundles a premium design, affordability and simplicity all in one incredible package. Display: 4.0-inch Touchscreen LCD Carrier: GSM, T-Mobile, ATT, etc. Network compatiblity: GSM 850 / 900 / 1800 / 1900, HSDPA 850 / 1900 Keyboard: Capacitive touchscreen Connectivity: microUSB v2.0 Wireless interface: Wi-Fi 802.11 b/g/n, Wi-Fi hotspot, Bluetooth v4.0 Internet browser: HTML5 Messaging: SMS(threaded view), MMS, Email, Push Mail, IM Design: Bar Camera: 3.2 Megapixels (2048x1536 pixels), Geo-tagging Integrated memory: 4 GB storage, 512 MB RAM; microSD expandable slot up to 64 GB Operating system: Android OS, v4.2 (Jelly Bean) Color options: Black, White, Blue, Pink, Yellow Model: S410a Included items: Handset, Battery, House/Wall Charger, and User Manual Dimensions: 124.86 x 64.55 x 10.08 (mm) Weight: 4.16 ounces Will this phone work with your service provider? Please note that the package only includes the device and necessary accessories. SIM card not included. In order to access the phones functions, it is necessary to have a contract with a wireless carrier such as ATT, T-Mobile, etc. Verizon and Sprint will not work with this phone.