Based on 2025 market data and the latest business layouts of OEMs and suppliers from 2025 to 2026, this report analyzes the development status quo and future trends of China’s passenger car T-Box market from the dimensions of overall market landscape, 5G adoption, V2X integration, RedCap lightweighting, and satellite communication convergence.

Rapid development of the Internet of Vehicles (IoV) industry continues to drive the upgrade of in-vehicle communication technologies. As a core component of intelligent connected vehicles, T-Box (Telematics Box) has witnessed profound changes in its market form, technological iteration, and industrial structure.

In 2025, the installation rate of Telematics function in China’s passenger cars reached 93.6%, approaching full popularization. Standalone T-Box units remain the mainstream in the market, while integration, 5G adoption, and function convergence have become core industry trends. Meanwhile, the commercial application of new technologies such as 5G-A, V2X, RedCap, and satellite communication has further promoted the upgrade of the T-Box market toward high added value and multi-scenario adaptation.    
 
1. Standalone T-Box Installations Account for Over 74%; Domestic Suppliers Including Neusoft Zhixing, Huawei, and GosuncnWelink Lead the Market

At present, T-Box is still the primary terminal for automobile remote communication, with an installation share of 74.2% in 2025. Domestic suppliers such as Neusoft Zhixing, Huawei, and GosuncnWelink have gradually become market leaders through customer tie-ins and product upgrades.
 
In China’s 2025 passenger car market, 6 out of the top 10 T-Box suppliers are domestic players, with a rising market share.
 
Neusoft Zhixing remains the second-largest and the largest domestic T-Box supplier, holding an 11.5% market share. As a wholly-owned subsidiary of Neusoft Group focusing on software-hardware integrated products for intelligent vehicle connectivity, its key customers include GWM Haval, Tank, Hongqi, Geely Galaxy, ZEEKR, etc. Its product portfolio has expanded and upgraded from traditional 4G T-Box to smart antennas, 5G/V2X T-Box, and 5G fully localized solutions.
 
Huawei is the second-largest domestic supplier, mainly supplying OEMs including Harmony Intelligent Mobility Alliance (HIMA), Toyota, and Mercedes-Benz. Driven by HIMA, its market share grew significantly in 2025. Huawei’s core advantage lies in its vertically integrated capabilities of "communication module + chip + operating system + cloud service", building a full-stack technical system from underlying hardware to upper-layer applications.
 
GosuncnWelink ranks third among domestic suppliers. Boosted by OEMs of Geely Group (Geely, Galaxy, Lynk & Co, Geometry), Changan Group (Deepal), and Chery Group (iCAR) in 2025, its market share grew notably. In 2025–2026, GosuncnWelink T-Box is being integrated with new communication modules such as 5G RedCap, 5G NR, satellite communication, and V2X, enriching functions and enhancing product competitiveness.

2. 5G T-Box Enters Large-Scale Popularization Stage; to Reach 91.8% Market Share by 2033

In-vehicle 5G technology evolves continuously along 3GPP R15→R16→R17→R18 (5G-A), with improving technical capabilities to provide critical communication support for intelligent connected vehicles and autonomous driving scenarios. Relying on the well-deployed domestic 5G infrastructure, China had 4.838 million 5G base stations by the end of 2025, covering all towns and 95% of administrative villages, while 5G-A networks covered over 330 cities, laying a network foundation for the large-scale popularization of 5G T-Box.
 
From 2022 to 2025, installations of 5G-equipped T-Box surged from 497,000 units to 5.862 million units, with a compound annual growth rate (CAGR) exceeding 120%. The installation rate jumped rapidly from 2.5% to 25.6%, rising by 23.1 percentage points in three years, officially entering the large-scale popularization stage.
 
In terms of product forms, the 5G proportion in two major categories of T-Box integrated smart antennas and T-Box integrated domain controllers exceeded 50% in 2025 and is expected to become nearly standard by 2033. The 5G proportion in standalone T-Box units and T-Box integrated IVI systems will also rise from 10–20% in 2025 to over 80% by 2033.

Suppliers including Neusoft Zhixing, Huawei, GosuncnWelink, and LGE take the lead in the fast-growing 5G T-Box market.

Neusoft Zhixing is a pioneer in 5G T-Box. Based on 5G features, it integrates its self-developed V2X protocol stack (VeTalk) and focuses on high-profile functions such as V2X, Security, FOTA, ETC, DK, and Gigabit Ethernet, realizing deep integration of communication, computing, and security. Since 2021, Neusoft Zhixing’s 5G/V2X BOX products have been mass-produced and launched on multiple strategic models of GWM, Hongqi, Geely, etc. Fully localized 4G/5G BOX solutions began mass production and delivery in 2025, and flat antenna solutions evolved from shark-fin smart antennas will be launched successively.

LGE, a representative foreign supplier, provides standalone and antenna-integrated 5G T-Box. Its standalone 5G T-Box supports 5G Rel 16 4x4 MIMO and NTN (Non-Terrestrial Networks) technologies; the antenna-integrated 5G T-Box adopts a shark-fin-free integrated design with a built-in communication system, seamlessly integrating with 5G, Wi-Fi, satellite communication, millimeter-wave, and other communication systems.

3. C-NCAP Regulation Upgrade Accelerates Mass Production of 5G C-V2X T-Box

V2X (Vehicle-to-Everything) is a core technology of intelligent connected vehicles, and T-Box, as the core of in-vehicle communication, has become the mainstream carrier for C-V2X pre-installation. In February 2026, China Automotive Technology and Research Center (CATARC) issued the draft for comments of C-NCAP 2027 Edition, upgrading V2X from a bonus item to a core variable affecting vehicle safety ratings and adding multiple mandatory audit items, becoming a key policy driver for pre-installation and large-scale commercialization of C-V2X.
 
Key Changes to V2X-Related Rules:
Increased weight of active safety: The number of V2X test cases in the 2027 edition doubled from 3 in the 2024 edition to 6, and its score proportion in the active safety section rose from 8.93% to 12.69%.

Higher rating thresholds: The new regulation not only considers the overall score rate but also requires minimum score rates for each section. The minimum active safety score rate for five-star ratings increased from 70% to 80%, and for five-star plus from 85% to 90%.

More challenging test scenarios: On the basis of retaining original scenarios (e.g., CCRh, C2C SCPso), the new regulation tightened test conditions (e.g., shortened vehicle distance, stricter obstructions) and added scenarios mandatorily relying on V2X, such as Hazardous Vehicle Alert (HVA), Accident Vehicle Alert (AVA), and upgraded Signal Light Alert (SLA).
 
C-V2X+T-Box is the mainstream form of V2X deployment currently. By integrating V-Box and T-Box, it integrates 5G+LTE-V2X+WiFi+GNSS functions into one module, improving the fusion of V2X data and communication data while reducing costs. For example, 5G V2X T-Box is priced at around 2,000 yuan, about 20% lower than independent modules.
 
Suppliers including Neusoft Zhixing, Joynext, VanJee Technology, DIAS Automotive Electronic, and BDStar are stepping up layout in V2X T-Box.
 
Neusoft Zhixing owns a complete vehicle-road coordination solution and end-to-end C-V2X products. As an important formulator and industrialization promoter of C-V2X standards, it has deeply participated in the discussion and formulation of more than 50 C-V2X industry standards. Based on 5G features and integrating its self-developed V2X protocol stack (VeTalk), Neusoft Zhixing took the lead in developing and launching 4G/5G+V2X Box and achieved large-scale mass production.

Joynext launched the nVision 3A-5G+V2X integrated digital smart antenna solution for 5G and C-V2X demands, applicable to 17 V2V/V2I standard scenarios and OEM customized scenarios with Day2 scenario upgrade capability, making it one of the mainstream 5G V2X in-vehicle terminals in China.

4. 5G RedCap T-Box Boasts Obvious Cost Advantages and Has Been Mass-Produced and Deployed

As a lightweight 5G technology, RedCap has been reasonably simplified in bandwidth, antenna configuration, modulation mode, etc. While meeting basic IoV demands such as remote monitoring, OTA, and data upload, it effectively reduces chip and module costs, with lower power consumption and simpler hardware design. It achieves better cost performance and economic efficiency for large-scale deployment without compromising core service experience.

5G RedCap T-Box has a significant cost advantage over traditional 5G T-Box, reducing the hardware cost of a single terminal by about 20–30%. In 2025, 5G RedCap T-Box was mass-produced and pre-installed in vehicles, with the representative model being Chery iCAR V23. Models equipped with 5G RedCap T-Box retain 5G’s core communication capabilities of low latency and high reliability while optimizing cost and power consumption, providing a cost-effective solution for popularizing 5G intelligent connectivity in mainstream models priced at 100,000–150,000 yuan.
 
Major suppliers of 5G RedCap T-Box include GosuncnWelink, Lan-You Technology, Jingwei HiRain, INTEST, Marelli, etc.
 
GosuncnWelink is making strong inroads into the 5G RedCap sector. In July 2025, it announced a targeted fundraising plan, of which 176 million yuan was used to expand the manufacturing scale of IoV communication products such as 4G/5G T-Box and 5G RedCap.

GosuncnWelink’s launched 5G RedCap T-Box product GT802 has been deployed in iCAR V23. The product integrates 5G RedCap communication module, high-precision positioning module, IMU inertial navigation unit, vehicle communication control unit, and Gigabit automotive Ethernet with calling function. In addition, it is equipped with a backup battery to provide emergency calling in critical situations.

Furthermore, GosuncnWelink provides automotive-grade 5G RedCap communication modules. Its GM87xA series adopts a three-in-one design compatible with mainstream packages and pin definitions, shortening the vehicle development cycle by 50%.

Marelli, a representative foreign supplier, launched lightweight 5G RedCap in-vehicle telematics processing technology dedicated to automotive infotainment systems in December 2025. The technology offers 50% higher data rate and 2.5x lower latency than 4G at a moderate price. Samples are scheduled to be available in early 2026, with the first global mass production set to launch in 2028.

5. Satellite Communication-Enabled T-Box: Advantages of Satellite Communication via T-Box Multiplexing

Satellite communication deployment in vehicles fills the coverage gaps of terrestrial cellular networks, enabling full-area, continuous, and reliable networking support for vehicles. In remote roads, mountainous areas, deserts, oceans, and other areas hard to cover by terrestrial base stations, it stably supports critical IoV services such as emergency calls, vehicle positioning, fault reporting, remote monitoring, and OTA upgrades without interruption, significantly improving driving safety and emergency rescue capabilities.

Brands that have mass-produced and launched satellite communication functions include Geely, AITO, Maextro, BYD, and Changan; those in the layout stage include BMW, Tesla, Xiaomi, SAIC, etc.
 
In terms of in-vehicle satellite communication terminals adopted by OEMs, they are mainly T-Box and dedicated equipment.

Among dedicated satellite communication equipment, the representative product is Geespace’s "Jishixun" in-vehicle terminal: built with automotive-grade MCU, satellite communication module, Bluetooth module, and backup battery. It realizes satellite voice calls with the IVI (DHU) via Bluetooth; collects vehicle status information and uses satellite SMS to achieve emergency alarms, message push, and vehicle status reporting, meeting communication link backup and emergency scenarios in outdoor environments.

Among T-Box integrated with satellite communication, the representative product is GosuncnWelink’s 5G T-Box GT805: deeply integrated with core components such as 5G NR wireless communication module, high-performance microcontroller, satellite communication module, tire pressure monitoring chip, Bluetooth communication chip, Wi-Fi module, audio codec unit, and Ethernet processor; fully covers core functions such as high-speed internet access, multi-mode mobile communication, satellite emergency communication, emergency call rescue, remote vehicle control, intelligent diagnosis, high-precision positioning and navigation, Bluetooth digital key management, and remote upgrade of vehicle ECUs. In application, Lynk & Co’s new 5G models are equipped with this product as standard.

Advantages of Satellite Communication and T-Box Converged Products

Optimal cost and hardware: Reduce independent terminals and duplicate components, simplifies structure and wiring, with outstanding cost performance for large-scale mass production.

Unified and reusable architecture: Multiplex T-Box automotive-grade power supply, HSM security, CAN/LIN interfaces, and automotive software systems, with stronger adaptability and compliance.

Continuous and reliable experience: Supports intelligent switching and redundant backup of satellite-terrestrial networks, ensuring full-area online status with better latency and stability.

Efficient and flexible deployment: Rapid iteration based on existing T-Box platforms, adapting to global frequency bands and satellite constellations, shortening mass production cycles.

Olaf Eckart, Senior Expert of R&D Cooperation at BMW, stated: "Our core message is that satellite communication must be integrated with 3GPP-based terrestrial networks." The most relevant spectrum bands are below 6GHz, NB-IoT, and 5G NR NTN, so existing terrestrial network equipment can be multiplexed with "reasonable modifications". This indicates that in-vehicle satellite communication products that multiplex existing vehicle equipment have huge advantages.

A tiered structure has formed among mainstream manufacturers laying out in-vehicle satellite communication T-Box. In addition to domestic terminal solution providers such as GosuncnWelink, INTEST, FIH Mobile, and One IOT World, international Tier-1 suppliers including LGE and Harman are also promoting the launch of related products simultaneously.

Looking ahead, converged T-Box solutions will generally evolve toward 3GPP-standardized NTN (Non-Terrestrial Networks) instead of relying solely on dedicated satellite communication protocols, realizing deep compatibility of satellite-terrestrial networks based on specifications such as 5G NR NTN and NB-IoT NTN, which is also a key technical path for large-scale deployment of in-vehicle satellite communication.