6.0" FWVGA Screen MTK6577 Dual Core 1.2GHz Android 4.0 3G Smart Phone N9776 (Black) 6.0" FWVGA Screen MTK6577 Dual Core 1.2GHz Android 4.0 3G Smart Phone N9776 (BLACK) Unlocked world GSM phone. 3G - 850/2100, 2G -850/900/1800/1900. Compatible with at&t, T-Mobile, Straight Talk, Simple Mobile and other GSM networks. Please make sure your SIM card is not locked with PUK code Free Tether - Use your 3G data service as a WiFi hot spot and connect your notebook, ipad or other device for free. No need to pay monthly tether fee Unlocked cell phones are compatible with GSM carriers but are not compatible with CDMA Carriers.