Tommy Kearns has built an impressive career around mobile technology over the last 20 years, since his early days of working where he would water mushroom tunnels at his late father’s mushroom farm in Co Longford. Going from mushrooms to mobile technology is quite the professional leap, but Kearns became somewhat of a trailblazer by engrossing himself in an industry that was in its infancy two decades ago. He decided to do his university thesis on mobile telephony while studying for a degree in business. “I brought it from where we were, which was like the big chunky handsets all…