Caterpillar CAT B15Q Dual Sim, 4GB, IP67, Factory Unlocked, US Warranty (Black) 2G: GSM/GPRS/EDGE GSM/GPRS/EDGE Frequencies: 850/900/1800/1900 MHz 3G - WCDMA/UMTS/HSPA: HSPA Frequencies: 3G 850/AWS/1900 NO LTE Processor: Media Tek, 6582M QUAD CORE 1.3Ghz Platform/OS: Android 4.4 KitKat Display: 4" WVGA (480x800) Capacitive Multi-touch (2p) Display Cover: Gorilla Glass Wet Finger Tracking Camera: Auto Focus Main: 5MP + LED flash Secondary/Front Facing: VGA Video Capture: Yes This device is Carrier-unlocked and may be used with any GSM carrier that uses a frequency or band that this device supports. A SIM card and service plan must be purchased separately. Unlocked GSM phones will &lt;b&gt;not work&lt;/b&gt; with CDMA networks like Boost, Sprint or Verizon Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.