Company: SONM
Filing Date: 2025-06-18
Form Type: DEFC14A
Source: 0001641172-25-015578
Chunk: 117

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-06-18
Form: DEFC14A
Chunk 117
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 will be required to provide the unique Control Number printed below.                               |

| CONTROL 
 NUMBER  |

| You                                                                                                                                       
 may submit your proxy by telephone 24 hours a day, 7 days a week.                                                                         
 Your                                                                                                                                      
 internet or telephone vote authorizes the Proxyholder(s) to vote your shares in the same manner as if you had marked, signed and returned 
 a proxy card.                                                                                                                             |

<div align='center'>OR</div>

| Submit your proxy by Mail:                                                                                                     |
| If                                                                                                                             
 you do not have access to the internet or a touch-tone telephone, please complete, sign, date and return the proxy card in the 
 enclosed envelope.                                                                                                             |

<div align='center'>** TO VOTE BY MAIL, PLEASE DETACH HERE, SIGN AND DATE PROXY CARD, AND RETURN IN THE POSTAGE-PAID ENVELOPE PROVIDED **</div>

☒Please mark vote as in this sample

WITH RESPECT TO PROPOSAL 1: Election of five directors to hold office until the 2026 annual meeting of stockholders, and until their respective successors shall have been duly elected and qualified. While you may mark instructions with respect to any or all of the nominees, you should mark a vote “FOR” only five nominees in total. If you vote “FOR” more than five nominees, all of your votes on Proposal 1 will be invalid and will not be counted. You are permitted to vote for fewer than five nominees. If you vote “FOR” fewer than five nominees, your shares will only be voted “FOR” the nominees you mark. If you sign and return your proxy card and do not specify or direct how you want your shares to be voted, they will be voted “FOR” all of the Board of Directors’ recommended nominees.

| 1.                                                                                                             |     | Election          
 of Five Directors |     |     |     |          |     | The Board of Directors recommends a                                                                                                        
 vote FOR proposals 2, 3, 4 and 3 YEARS on proposal 5.                                                                                      |     |     |     |                |     |         |
| The                                                                                                            
 Board of Directors recommends you vote FOR only the following five (5) Board nominees (1.01 through 1.05):     |     |                   |     |     |     |          |     |                                                                                                                                            |     | FOR |     | AGAINST        |     | ABSTAIN |
| Company Nominees:                                                                                              |     |