3g Serial Modem
Overview
Product sourcing insights & recommendations


The market for 3G serial modems is currently defined by the global "3G Sunset," with major regions like the US, Japan, and parts of Europe already having shut down these networks to re-farm spectrum for 4G and 5G. While legacy 3G units remain available for specific regions like the UK (where 3G persists until 2033) or parts of SE Asia and Africa, the industry has largely pivoted toward Industrial 4G DTUs that offer backward compatibility or 3G fallback.
Key findings indicate that the primary market driver is the forced replacement of over 50% of legacy IoT devices currently relying on 2G/3G connectivity. Modern alternatives, such as LTE Cat-M1 and NB-IoT modems, provide significantly better power efficiency and integrated security features (VPN/Firewall) that were lacking in older 3G models. The attached report provides a detailed breakdown of regional shutdown timelines and a technical comparison of current product offerings.
I have compiled the latest market trends for 3G serial modems. You can continue with:
3g Serial Modem Rs232 Rs485 Industrial M2m
Products · 2 lists

Four-Faith Industrial RS-232 Modbus RS-485 M-bus Converter 3G M2M WCDMA/HSDPA/HSUPA Modems 1024Kbps External
Xiamen Four-Faith Communication Technology Co., Ltd.🇨🇳CN16 yrs
M2m Iot 3g Modem Rs232 Rs485 to 3g Wcdma
Xiamen Bivocom Technologies Co., Ltd.🇨🇳CN10 yrs
RS232 RS485 Interface SMS Modem Sms Gateway Hardware 3G Serial Port Gsm Maestro 100 Modem
Shenzhen Bailingjia Technology Co., Ltd.🇨🇳CN17 yrs
HF2421 Double Port Serial Device Server RS232 RS485 RS422 to Ethernet Wifi 4G 3G GPRS Network Converter
Shenzhen Qinli Electronic Technology Co., Ltd.🇨🇳CN5 yrs
M230 External Wireless Modem with Transparent Data Transmission Supports Serial Port RS232 RS485 and GSM GPRS for AMR PLC
Xiamen Yifan Communication Technology Co., Ltd.verified🇨🇳CN17 yrs
E840-DTU(4G-02)E Industrial Grade Wireless Networking Modem Equipment Modbus RS485 GPRS 3G 4G LTE Modem for M2M
Chengdu Ebyte Electronic Technology Co., Ltd.🇨🇳CN11 yrs
Wireless Industrial WCDMA 3G GSM GPRS Cellular Modem with RS232 Interface, Support TCP/UDP Data Transceiver Modem for M2M
Shenzhen Yun Da Tong Technology Co., Ltd.🇨🇳CN10 yrs
BGS2T RS232 Industrial 3G Modem Cheap Gsm Wireless M2M Device Terminal Industrial Communication & Networking Product
Ganzhou Xuanpin Trading Co., Ltd.🇨🇳CN1 yr
GPRS Modem GSM 2G 3G Modem USB/RS232/SIM Industrial-Grade at Command Support Free Software Driver Download CE/FCC/RoHS Certified
Shenzhen Bailingjia Technology Co., Ltd.🇨🇳CN14 yrs
M1003GXT00B BOM MODEM M2M 3G HSDPA RS-232 KIT M1003GXT00B
Shenzhen Longgang Ruru Trading Firm🇨🇳CN3 yrs
M1003GXT00B BOM MODEM M2M 3G HSDPA RS-232 KIT M1003GXT00B
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Sources & References
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Detailed 3G Modem Market Report 2026-2033
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Mobile Broadband Modem Market – 2026 Report Built by ...
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The Global Mobile Broadband Modem Market is projected to grow from USD 6.7 billion in 2024 to USD 10.8 billion by 2030, registering a CAGR of 8.2% (3G/4G LTE, ...

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The cellular modem market size is projected to grow from USD 4.8 billion in 2023 and is anticipated to be USD 12.4 billion by 2028, growing at a CAGR of 20.6% ...

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The Serial to Cellular Gateway Market, valued at USD 1.74B in 2026, is projected to reach USD 3.09B by 2030, growing at a 15.4% CAGR.
