The Sonim XP3 Quest ($400) couldn't get any tougher. This rugged mobile phone can withstand extreme shock, 6.5-foot drops and submersion in water for up to 30 minutes. Along with exceptional durability, the XP3 Quest features a color display, GPS tracking, built-in Bluetooth and lithium-ion battery with 18 hours of talk time and 1,500 hours of standby.