Sonim Technologies announces the Sonim XP3300 Force, its latest ultra-rugged handset at the Mobile World Congress 2011 in Spain. The new robust handset is made of fiberglass and meets the IP68 rating, a two meters high on concrete, two feet of immersion in water, and from 20 to 55 degrees below zero degrees Celsius (-4 to 131 degrees Fahrenheit) temperatures.

read more »