what is rugged phone?
Best Rugged Smartphones (Unlocked) 2017. Shopping, Smartphones. For those with a demanding job or lifestyle with constant exposure to environmental hazards, a rugged smartphone with military-grade protection may be the best option. A rugged smartphone is also a smart choice to use as a second phone when traveling. Ruggedized smartphone models meet military testing standards for protection against shock, water, dust, extreme temperatures, and vibration. They are water-resistant and can withstand submersion in shallow water for a limited time.