Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2019
Mar. 23, 2020
Jun. 28, 2019
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Trading Symbol SONM    
Entity Registrant Name SONIM TECHNOLOGIES INC    
Entity Central Index Key 0001178697    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Emerging Growth Company true    
Entity Ex Transition Period false    
Entity Small Business true    
Entity Public Float     $ 106,411,814
Entity Common Stock, Shares Outstanding   20,643,151  
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Interactive Data Current Yes    
Entity Shell Company false    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Security Exchange Name NASDAQ    
Entity File Number 001-38907    
Entity Incorporation, State or Country Code DE    
Entity Address, State or Province TX    
Entity Address, Address Line One 6836 Bee Cave Road Building 1    
Entity Address, Address Line Two Suite 279    
Entity Address, City or Town Austin    
Entity Tax Identification Number 94-3336783    
Entity Address, Postal Zip Code 78746    
City Area Code 650    
Local Phone Number 378-8100    
Document Annual Report true    
Document Transition Report false    
Documents Incorporated by Reference


Certain information required by Part III, Items 10-14 of this Form 10-K is incorporated by reference to the Registrant's definitive Proxy Statement for the 2020 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Form 10-K, provided that if such Proxy Statement is not filed within such period, such information will be included in an amendment to this Form 10-K to be filed within such 120-day period.