For USA Buyers : This Smartphone is compatible/will work with any GSM Networks such as AT&T, T-Mobile. For exact 2G GSM, 3G, 4G/LTE compatibility, please check with your network provider in advance prior to your purchase. This phone WILL NOT WORK with any CDMA Networks such as VERIZON, SPRINT, US CELLULAR. Dual-SIM (Nano-SIM), Network Compatibility : SIM CARD 1 [ 2G GSM and/or CDMA/EVDO1 : BC0 / BC1/ BC10 and/or 3G UMTS 850(B5) / 900(B8) / 1700|2100(B4) / 1900(B2) / 2100(B1) and/or 4G LTE 700(B12) / 700c(B13) / 700(B14) / 700(B28) / 850(B5) / 850(B26) / 900(B8) / 1800(B3) / 1900(B2) / 1900(B25) / 1700|2100(B4) / 1700|2100(B66) / 2100(B1) / 2300(B30) / 2600(B7) : TD-LTE : 2500(B41) / 2600(B38) and SIM CARD 2 [ 2G GSM ] 2.64" TFT Gorilla Glass, 320 x 432 pixels, 262K Colors 16GB Storage, 2GB RAM Proprietary OS, MSM8920 Quad core 1.4GHz, 3180m - Ah Li-Ion Battery, 5MP FF Rear Camera with Flash, Languages Supported: English, Spanish, Canadian French. p Handset communication pushed to the extreme. - Meet the next generation ultra-rugged device built for mission critical communication. Industrial strength. Military tested. The XP5s meets the toughest performance standards to deliver clear, crisp communication wherever work takes you. With built-for-work features that ensure the job gets done right. - Rugged Certifications : Class I, Div 2, Groups A, B, C, D; Class II & III, Div 2, Groups F, G;, MIL-STD-810G; IP-68 - Dedicated Keys - PTT Key, Speaker Phone Key, Volume Keys, SOS Red Alert - Ports - XPand Interface, USB-C, Sonim Secure - Audio Connector, Charging Pins, Dual Nano SIM Slots /p