Sonim Technologies, Inc. updated earnings guidance for the fiscal year ending December 31, 2019. For the period, Net revenues are expected to be flat or slightly below 2018 net revenues of $135.7 million reported in fiscal 2018; GAAP net loss, defined as net revenues less cost of goods sold, selling, general and administrative expenses, operating expenses, depreciation, interest, taxes and other expenses, is expected to be up to $15 million.