Phone Manufacturers talk about their products being rugged but their claims are ignorable when you compare those phone models with the Sonim XP3.20 Quest, which rightfully is the worlds toughest phone. One does not doubt the durability and the endurance of this offering because the guys over gear log dragged it behind a car, dropped it from heights and even hammered it with nails yet, it managed to survive the torture. The phone comes as an unlocked GSM option and works with existing AT&T and T-Mobile subscriptions. Despite the hardcore character, Sonim manages to slip in a 2MP camera, an FM Radio and an MP3 in the spec sheet. Talk about warranty and here is what it ‘really’ means- break this phone before three years and Sonim will replace it without posing a question. For all this ruggedness, you will pay $399 for an unlocked option at Best Buy. Check the torture-test video after the jump.