Reliable function even under extreme conditions – in summary, these are the strengths of an outdoor cell phone. They survive water splashes, bumps and falls from a height that would not leave much of a normal cell phone. Scratches or dirt and dust don’t bother the robust devices. And even high temperatures don’t make a real outdoor cell phone sweat, just like deep sub-zero temperatures in freezing cold and extreme temperature changes. Some outdoor cell phones are even completely waterproof. However, you should find out more about this before you go swimming with your phone.<\/p>