Company: SONM
Filing Date: 2025-09-09
Form Type: PRE 14A
Source: 0001493152-25-012903
Chunk: 0

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-09-09
Form: PRE 14A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934</div>

Filed by the Registrant ☒

Filed by a party other than the Registrant ☐

Check the appropriate box:

| ☒ | Preliminary                                                       
 Proxy Statement                                                   |
| ☐ | Confidential,                                                     
 for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ | Definitive                                                        
 Proxy Statement                                                   |
| ☐ | Definitive                                                        
 Additional Materials                                              |
| ☐ | Soliciting                                                        
 Material under §240.14a-12                                        |

<div align='center'>Sonim Technologies, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check all boxes that apply):

| ☒ | No           
 fee required |

| ☐ | Fee                                        
 paid previously with preliminary materials |

| ☐ | Fee                                                                                             
 computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

<div align='center'>PRELIMINARY PROXY STATEMENT— SUBJECT TO COMPLETION. DATED SEPTEMBER 9, 2025</div>

| Sonim                    
 Technologies, Inc.       
 4445                     
 Eastgate Mall, Suite 200 
 San                      
 Diego, CA 92121          |

Notice of 2025 Special Meeting

and Proxy Statement

| Date      
 and Time: | [day],                              
 [month] [XX], 2025                  
 9:00 a.m., Pacific Time             |
| Location: | Participate                         
 virtually at www.proxydocs.com/SONM |

| Sonim                    
 Technologies, Inc.       
 4445                     
 Eastgate Mall, Suite 200 
 San                      
 Diego, CA 92121          |

<div align='center'>NOTICE OF 2025 SPECIAL MEETING OF STOCKHOLDERS</div>

| Date and Time:   | [day], [month] [XX], 2025 
 9:00 a.m., Pacific Time   |
| Virtual Meeting: | Participate online at     
 www.proxydocs.com/SONM    |
| Record Date