Company: SONM
Filing Date: 2025-07-01
Form Type: 424B4
Source: 0001641172-25-017383
Chunk: 0

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-07-01
Form: 424B4
Chunk 0
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Filed Pursuant to Rule 424(b)(4)

Registration No. 333-288221

PROSPECTUS

<div align='center'>SONIM TECHNOLOGIES INC

7,400,000Shares of Common Stock

Placement Agent Warrants to Purchase 222,000 Shares of Common Stock

222,000Shares of Common Stock Issuable upon the Exercise of Placement Agent Warrants</div>

This is an offering
of securities by Sonim Technologies, Inc. We are offering, on a best-efforts basis, up to 7,400,000 shares of our common stock.
You should read this prospectus and any prospectus supplement or amendment carefully before you invest in our securities.

We will have one closing for all the securities purchased in this offering. The public offering price per share will be fixed for the duration of this offering.

Our common stock is listed on the Nasdaq Capital Market (“Nasdaq”) under the symbol “SONM.” The last reported sale price of our common stock on June 30, 2025, was $1.22.

We are a “smaller reporting company” as defined under the federal securities laws and, under applicable Securities and Exchange Commission rules, we have elected to comply with certain reduced public company reporting and disclosure requirements.

We have agreed to pay the placement agent fees set forth in the table below, which assumes that we sell all of the securities offered by this prospectus. See “ Plan of Distribution” on page 71of this prospectus for more information regarding these arrangements.

|                                 |     | Per   
 Share |      |     | Total |           |
|:--------------------------------|:----|:------|-----:|:----|:------|----------:|
| Public offering price           |     | $     | 0.75 |     | $     | 5,550,000 |
| Placement agent fees(1)         |     | $     | 0.05 |     | $     |   388,500 |
| Proceeds, before expenses to us |     | $     | 0.70 |     | $     | 5,161,500 |

| (1) | We                                                                                                                               
 have agreed to (i) pay the placement agent a cash fee equal to 7.0% of the aggregate                                             
 gross proceeds raised at the closing of this offering and (ii) issue warrants to the placement                                   
 agent exercisable for a number of shares of common stock equal to 3.0%