Three new ultra-rugged Push-to-Talk (PTT) phones are headed to Bell Mobility in the near future. The Sonim XP5560 BOLT 2, the Sonim XP5560 BOLT 2 IS, and the Sonim XP1520 BOLT SL are not your usual run-of-the-mill smartphones but are designed for challenging and hazardous environments such as power plants or oil and gas facilities where regular mobile devices are […]