Toughest mobile phone on earth - SONIM

SONIM a.k.a " so nimble " claim to be the toughest and most robust mobile GSM phone available in the market which is able to withstand shock - 10 feet free fall , water proof and rugged / extreme condition suitable for construction workers, adventurous mountaineers; jungle treker to marine biologist in aquatic settings. Source : Sonim Technologies www.sonim.com