Company: SONM
Filing Date: 2025-09-19
Form Type: DEF 14A
Source: 0001493152-25-014244
Chunk: 1

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-09-19
Form: DEF 14A
Chunk 1
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 appropriate, from                                                
 time to time, to a later date or dates, even if a quorum is present, to solicit additional                                                
 proxies if there are not sufficient votes at the time of the Special Meeting to approve the                                               
 Reverse Stock Split Proposal, the Authorized Shares Proposal, or the Equity Incentive Plan                                                
 Increase Proposal (the “Adjournment Proposal”).                                                                                           |

You may vote on these matters virtually or by proxy. Each outstanding share of our common stock is entitled to one vote. Whether or not you plan to virtually attend the Special Meeting, we ask that you vote by one of the following methods to ensure that your shares will be represented at the meeting in accordance with your wishes (see “ How do I vote?” on page 3in the accompanying proxy statement):

| 1. | Vote                                                                                                     
 online or by telephone, by following the instructions included with the proxy card; or                   |
| 2. | Vote                                                                                                     
 by mail, by completing and returning the enclosed proxy card in the enclosed addressed stamped envelope. |

This proxy statement and the form of proxy were first sent or given to stockholders on or about September 19, 2025.

If you have any questions or require any assistance
with voting your shares, please contact Sodali & Co, our proxy solicitor assisting us in connection with the Special Meeting:

<div align='center'>430 Park Avenue, 14th Floor

New York, New York 10022

Stockholders Call Toll-Free in North America: (800)
662-5200

Outside of North America Call Collect: (203) 658-94000

E-mail: SONM@investor.sodali.com</div>

| By                               
 Order of the Board of Directors, |           |
| Name:                            | Clay      
 Crolius   |
| Title:                           | Secretary |

San Diego, California

September 19,2025

<div align='center'>TABLE OF CONTENTS</div>

|                                                                                                             |                                                                                                                    | Page |
| Proxy                                                                                                       
 Statement                                                                                                   |                                                                                                                    |    1 |
| Important Information Regarding Delivery of Proxy Materials                                                 |                                                                                                                    |    1 |
| Cautionary                                                                                                  
 Note Regarding Forward-Looking Statements                                                                   |                                                                                                                    |    2 |
| Website                                                                                                     
 Information                                                                                                 |                                                                                                                    |    2 |
| General                                                                                                     
 Information about 2025 Special Meeting                                                                      |                                                                                                                    |    3 |
|                                                                                                             | When are this proxy