Company: SONM
Filing Date: 2025-07-01
Form Type: POS AM
Source: 0001641172-25-017379
Chunk: 1

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-07-01
Form: POS AM
Chunk 1
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 effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☒

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:

| Large             
 accelerated filer | ☐ | Accelerated       
 filer             | ☐ |
| Non-accelerated   
 filer             | ☒ | Smaller           
 reporting company | ☒ |
|                   |   | Emerging          
 growth company    | ☐ |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

This registration statement shall become effective upon filing with the U.S. Securities and Exchange Commission in accordance with Rule 462(d) promulgated under the Securities Act of 1933, as amended.

<div align='center'>EXPLANATORY NOTE</div>

This Post-Effective Amendment No. 1 (“Amendment No. 1”) to the Registration Statement on Form S-1, as amended (File No. 333-288221), declared effective by the Securities and Exchange Commission on June 30, 2025 (“Registration Statement”), is being filed solely for the purpose of replacing Exhibit 5.1 the Registration Statement. This Amendment No. 1 does not modify any provision of Part I or Part II of the Registration Statement other than Item 16(a) of Part II as set forth below.

<div align='center'>PART II

Information Not Required In Prospectus</div>

Item 16. Exhibits and Financial Statement Schedules.

| (1) | Exhibits |

| Exhibit 
 Number  |     | Exhibit                                          
 Description