Company: SONM
Filing Date: 2025-11-12
Form Type: 424B3
Source: 0001493152-25-021905
Chunk: 2

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-11-12
Form: 424B3
Chunk 2
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 to submit a plan to regain compliance on or before October 6, 2025, in each
case, subject to an additional 180 calendar day period to regain compliance that may be granted by Nasdaq, or our common stock will become
subject to delisting. On October 6, 2025, we submitted to the Nasdaq staff a plan to regain compliance with Nasdaq Listing Rule 5550(b)(1).
On October 17, 2025, we received written notification from Nasdaq (the “Extension Notice”) granting the Company an extension
through December 31, 2025, to regain compliance with Nasdaq Listing Rule 5550(b)(1). Under the terms of the extension, on or before December
31, 2025, the Company must evidence compliance with Nasdaq Listing Rule 5550(b)(1) as set forth in the Extension Notice. We intend to
satisfy these requirements within the current extension period or, if necessary, to request a further extension from Nasdaq, which would
be subject to Nasdaq’s discretion.

Our Common Stock is listed on the Nasdaq Capital Market
(“Nasdaq”) under the symbol “SONM.” On November 11, 2025, the last quoted sale price for the shares
of our Common Stock as reported on Nasdaq was $11.04 per share.

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.

Investing in our securities involves a high degree of risk. Before buying any securities, you should carefully read the discussion of the risks of investing in our securities in the section titled “ Risk Factors” beginning on page 8of this prospectus.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of the securities to be issued under this prospectus or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

<div align='center'>The date of this prospectus is November 12, 2025.</div>

<div align='center'>Table of Contents</div>

| Information                                        
 about This Prospectus                              |  1 |
| Cautionary                                         
 Note Regarding Forward-Looking Statements          |  2 |
| Prospectus                                         
 Summary                                            |  4 |
| The                                                
 Offering                                           |  7 |
| Risk