As filed with the Securities and Exchange Commission on October 9, 2025. Registration No. 333-290589 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Delaware 3661 94-3336783 (I.R.S. Employer Identification Number) 4445 Eastgate Mall, Suite 200 San Diego, C ...

As filed with the Securities and Exchange Commission on September 29, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Sonim Technologies, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Delaware 3661 94-3336783 (I.R.S. Employer Identification Number) 4445 Eastgat ...

Core Insights - Sonim Technologies is positioned for growth in the second half of 2025 with the launch of its XP Pro series and 5G flip feature phone through tier-one carriers [2] - The company reported a net revenue of $11.2 million for Q2 2025, a decrease of 33% from Q1 2025, primarily due to a one-time revenue adjustment in the previous quarter [7][8] - Sonim's net loss for Q2 2025 was $7.5 million, compared to a net income of $0.5 million in Q1 2025, reflecting challenges in the current financial environment [11] Financial Highlights - Q2 2025 net revenue was $11.2 million, down from $16.7 million in Q1 2025, with the first quarter benefiting from a one-time $5.3 million revenue addition [7][8] - Gross profit for Q2 2025 was $0.8 million, representing 8% of revenues, a significant decline from $8.4 million or 50% of revenues in Q1 2025 [9] - Adjusted EBITDA for Q2 2025 was negative $3.2 million, unchanged from Q1 2025 [11] Business Developments - The company launched the XP Pro smartphone with AT&T and began shipments of the Sonim H500 mobile hotspot to European distributors [7] - Sonim entered into a definitive agreement with Social Mobile for the acquisition of substantially all of its assets for $15 million, with an additional potential earn-out of $5 million [7] - The company ended Q2 2025 with cash and cash equivalents of $2.0 million, trade accounts receivable of $2.9 million, and inventory valued at $9.9 million [12] Corporate Updates - Sonim's Board of Directors approved the acquisition agreement with Social Mobile, which is expected to close in Q4 2025, pending customary closing conditions [7] - The company raised $5.4 million in capital through common stock sales to support product expansion and new launches [7] - Sonim's stockholders elected five director nominees to the Board, indicating a stable governance structure moving forward [7]

Core Insights - The Sonim MegaConnect is the first ultra-portable 5G HPUE mobile hotspot designed specifically for public safety on FirstNet, enhancing connectivity for first responders [2][5][12] - The device offers 6x the transmission power and up to 2x faster speeds compared to standard hotspots, improving coverage in rural and urban environments [5][6][9] - The MegaConnect is compact, ruggedized, and priced affordably at $99 for a limited time, making it accessible for first responders [7][15] Product Features - The MegaConnect utilizes Band 14, a high-quality spectrum reserved for FirstNet, ensuring superior coverage and penetration through obstacles like glass and concrete [6][12] - It incorporates next-generation AirJet cooling technology, allowing for full HPUE performance in a portable form factor [10][12] - The device is designed for durability and ease of deployment, suitable for various emergency situations [10][11] Market Position - Sonim Technologies positions the MegaConnect as the most affordable HPUE on the market, targeting first responders and other mission-critical users [7][13] - The device is available exclusively through AT&T and FirstNet channels, with a promotional price aimed at increasing adoption among public safety agencies [15][16] - Beyond first responders, the MegaConnect can also serve utilities, financial institutions, and other enterprises needing reliable connectivity [13]