This used Sonim XP8 cell phone is a great companion to have with you on the field. With certifications such as IP68, IP69, and MIL-STD-810G this AT&T military smartphone is truly rugged. Not only is this phone durable, but it also comes along with some very useful features such as PTT mode, SOS red alert, a 5-inch Gorilla Glass 3 touchscreen, a 100dB+ loud speaker, a large battery, and a hard programmable key. The used Sonim XP8 cell phone also has some common features found on smartphones. It operates on 4G LTE network bands, it's HD voice capability, it's NFC capable, and has dual-band WiFi connectivity along with mobile hotspot mode for up to 10 devices. This military smartphone has a removable Li-Ion 4900mAh battery for extended talk time. The Sonim XP8 also has a micro SD card slot capable of adding up to 128GB of additional memory in addition to the 64GB internal memory. This cellular device operates with an Octa-Core 2.2GHz processor, 4GB of RAM, and Android OS version 7.0 (Nougat).