If you are on AT&T networks and looking for a rugged smartphone, Kyocera DuraForce XD might interest you. The phone has IP68 (dust / Water resitant) and Military Standard 810G rating that makes the phone sustain even in harsh environments. The handset can be submerged inside water up to the depth of 6 feet for 30 minutes.
Kyocera DuraForce XD specs include a huge 5.7-Inch HD Display and sports a large dedicated side key. The touch screen also supports Glove and wet touch. The handset can sustain energy for long hours of usage with its 3700 mAh battery (removable) and comes with multi-back external charging contacts.
This mobile phone features extra loud dual speaker that will make the sound audible in in noisy conditions. At peak volumes the speakers give output of 110dB. The phone seems to run on Android Lollipop OS.
The Kyovera DuraForce XD is also certified non-inscendive, Class 1, Division 2 – making it possible to work at sites with high concentration of flammable gases, vapors, mists etc. All the connectivity features are also supported like 4G-LTE, EPTT over Wi-Fi and LTE, Bluetooth, GPS, 3.5mm Audio Jack etc.