Sonim Technologies Inc. Quarterly report pursuant to Section 13 or 15(d)

Entity Level Information - Summary of Revenue by Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 28,850	$ 39,498	$ 99,081	$ 89,138
U.S [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	23,170	33,030	78,401	69,583
Canada and Latin America [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	3,964	3,517	13,255	10,149
Europe and Middle East [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	756	2,012	4,766	8,098
Asia Pacific [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenue	$ 960	$ 939	$ 2,659	$ 1,308