 AUSTIN, Texas, June 1, 2021 PRNewswire -- Sonim Technologies, Inc. Nasdaq: SONM, a leading U.S. provider of ultra-rugged mobility solutions designed specifically for task workers physically engaged in their work environments, today announced that Robert Bob Tirva, currently serving as Chief Financial Officer, will be promoted to President and Chief Operating Officer. He will report directly to the Board of Directors and work closely with the Strategic Alternatives and Operating Committee. 