Unlocked 5.5 inch E-Passion N4 -HD screen, IPS 960x540 pixels Unlocked Smartphone Cellphone, Ultra-thin Android PAD 5.5" QHD 960*540 2.dual sim card 3.512mb RAM+4GB ROM 4.Front 0.3 MP/ Rear 2.0MP note4 phone OS:Android 4.4 note4 phone CPU:MTK6582 Cortex-A7 Quad Core 1.5GHz Service Provide: Unlocked phone Network type:2G GSM/3GWCDMA note4 phone Network Support:2G GSM 850/900/1800/1900MHz, 3G WCDMA 850/2100 Battery:3000mAH Compatible with : AT&T: (2G and 3G),compatible with regular plan or Go phone plan at 2G,/3Gnetworks. No additional setup needed. T-Mobile: (2G only),Unfortunately only supports T-Mobile at 2G network because of their complicated 3G network structure. Straight Talk - Compatible on AT&T tower at 2G and 3G. Compatible on T-Mobile towers at 2G network only. "NOT COMPATIBLE" on Verizon or Sprint tower. Upgrade your existing phone (make sure sim card is unlocked) or use it on new Straight Talk account. You can call provider for APN setting. Net10: - Compatible on AT&T tower at 2G and 3G , Compatible on T-Mobile towers at 2G network only. "NOT COMPATIBLE" on Verizon or Sprint tower. Upgrade your existing phone (make sure sim card is unlocked) or use it on new Straight Talk account. You can call provider for APN setting. TracFone: (2G and 3G with AT&T sim and 2G with T-mobile sim) Simple mobile: (2G only),Unfortunately only supports T-Mobile at 2G network because of their complicated 3G network structure. Airvoice: (2G and 3G) Not Compatible with: Sprint Verizon Clearwire MetroPCS Virgin Mobile Family Mobile 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.