Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2021
Mar. 21, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag true    
Document Period End Date Dec. 31, 2021    
Document Fiscal Year Focus 2021    
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     $ 37,359,618
Entity Common Stock, Shares Outstanding   19,269,213  
ICFR Auditor Attestation Flag false    
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 6500 River Place Boulevard, Bldg. 7    
Entity Address, Address Line Two S#250    
Entity Address, City or Town Austin    
Entity Tax Identification Number 94-3336783    
Entity Address, Postal Zip Code 78730    
City Area Code 650    
Local Phone Number 378-8100    
Document Annual Report true    
Document Transition Report false    
Amendment Description This Amendment No. 2 on Form 10-K/A (“Amendment No. 2”) amends our Annual Report on Form 10-K for the fiscal year ended December 31, 2021 (the “10-K”), filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 21, 2022, as amended by our Amendment No. 1 to Form 10-K, filed with the SEC on May 2, 2022 (“Amendment No. 1” and the 10-K, together with Amendment No. 1, the “Original Filing”). We are filing Amendment No. 2 solely for the purpose of correcting the signatories included within Exhibits 31.1 and 32.1 filed with the 10-K and Amendment No. 1.  Except as otherwise noted in this Explanatory Note, no other changes were made to the Company’s Original Filing. This Amendment No. 2 speaks as of the Original Filing date, and does not reflect events that may have occurred subsequent to the Original Filing date.    
Auditor Name Moss Adams LLP    
Auditor Firm ID 659    
Auditor Location Campbell, CA    
Documents Incorporated by Reference