Sonim Technologies Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation - Additional Information (Details)

Stock-based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands											1 Months Ended	12 Months Ended
	Jan. 27, 2022	Nov. 12, 2021	Oct. 08, 2021	Sep. 15, 2021	Jul. 01, 2021	Jun. 18, 2021	Jun. 17, 2021	Dec. 14, 2020	Sep. 29, 2020	Jun. 09, 2020	May 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Sep. 23, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reverse stock split				1-for-10
Number of shares exercised												707	54,116
Common stock, number of shares available for sale														41,637
Dollar value of bonuses fixed amount												$ 254
Fully vested included in accrued expenses												254
Unamortized stock-based compensation cost related to unvested stock options												$ 2,034
Unamortized stock-based compensation cost, weighted average period of recognition												4 years
Pre-tax intrinsic value of options exercised												$ 0	$ 50
Weighted average options grant fair value													$ 4.10
Expected dividend yield												0.00%	0.00%
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock issued during period		97,671	75,000		850	46,747	46,747	11,400	67,650	201,550
Number of shares, Unvested												347,111	269,138
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unamortized stock-based compensation cost related to unvested RSU's												$ 2,034
Number of shares, Unvested												347,111	269,138
2019 Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available to be issued												538,243
Increase In common stock reserved for issuance of number of shares of capital stock outstanding												331,551	102,185
Increase in common stock reserved for future issuance											300,000
2012 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period												10 years
Number of shares exercised												0	0
2012 Equity Incentive Plan \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period												2 years
2012 Equity Incentive Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period												4 years
2012 Equity Incentive Plan \| Options and SARs \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price options granted from fair value common stock, percent												100.00%
2012 Equity Incentive Plan \| Granted to Ten Percent Stockholders \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price options granted from fair value common stock, percent												110.00%
2012 Equity Incentive Plan \| Granted to Ten Percent Stockholders \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period												5 years
2019 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, number of shares available for sale													54,137
Period in which reserved shares will increase annually												10 years
Increase in common stock reserved for issuance as a percentage of total number of shares of capital stock outstanding on the last day of the prior calendar year												1.00%
Increase In common stock reserved for issuance of number of shares of capital stock outstanding on last day of prior calendar year												50,000
Increase In common stock reserved for issuance of number of shares of capital stock outstanding												50,000
Common stock reserved for issuance description												Additionally, the number of shares of common stock reserved for issuance under the 2019 Employee Stock Purchase Plan automatically increases on January 1 of each calendar year for 10 years, starting January 1, 2020, and ending on, and including, January 1, 2029, in an amount equal to the lesser of 1% of the total number of shares of capital stock outstanding on December 31st of the prior calendar year, and (ii) 50,000 shares, unless the Board of Directors or the compensation committee of the Board of Directors determines prior to such date that there will be a lesser increase, or no increase.
Number of shares issued												19,736	19,210
2019 Employee Stock Purchase Plan \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares issued	415,023
2019 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, number of shares available for sale												922,266
Period in which reserved shares will increase annually												10 years
Increase in common stock reserved for issuance as a percentage of total number of shares of capital stock outstanding on the last day of the prior calendar year												5.00%
Common stock reserved for issuance description												shares of common stock are reserved for future issuance under the 2019 Option Plan, plus the number of shares subject to outstanding stock options or other stock awards that were granted under the 2012 Option Plan that are forfeited, terminated, expire or are otherwise not issued. Additionally, the number of shares of common stock reserved for issuance under the 2019 Option Plan automatically increases on January 1 of each calendar year for 10 years, starting January 1, 2020 and ending on and including January 1, 2029, in an amount equal to 5% of the total number of shares of capital stock outstanding on December 31 of the prior calendar year, unless the Board of Directors or compensation committee determines prior to the date of increase that there will be a lesser increase, or no increase.