LTE and 5G Routers – Professional Mobile Network Devices for Businesses
LTE and 5G routers provide stable access to mobile internet where wired connections are unavailable, unreliable, or insufficient. They are effective in branches without fibre optics, as a backup link, and in IoT infrastructure. We have prepared a guide that explains the differences between modem categories, types of devices, and key parameters to ensure that the choice of router is informed and tailored to the needs of the business.
What is an LTE router and how does it work?
An LTE router is a network device that connects to the internet via a mobile network using a SIM or eSIM card and provides the connection through Ethernet ports and Wi-Fi. A traditional router requires a wired connection (fibre optics, DSL, or cable network) and treats the mobile connection at best as a backup. An LTE router uses a built-in 4G modem as the main WAN interface, so it only needs mobile network coverage to operate.
Advanced models support Carrier Aggregation, automatic link switching (failover), and load balancing. A new location can thus be launched without waiting for a fixed line connection to be installed.
Deployment is usually straightforward: simply insert the SIM card, connect the power supply, and configure basic parameters such as APN in the router's admin panel.
Applications of LTE and 5G Routers in Business
- Quick branch setup – without waiting for the installation of a fixed line connection.
- Backup link (failover) – continuity of operations in case of a wired connection failure.
- Mobility – internet access in vehicles, construction sites, and temporary locations.
- IoT and M2M – monitoring, automation, SCADA systems, industrial sensors.
- Disaster recovery – maintaining connectivity in crisis situations.
Types of LTE and 5G Routers
Mobile network devices encompass a wide range of solutions – from mobile routers to advanced industrial devices. The choice of the right type depends on the use case scenario, required bandwidth, and operating conditions.
Categories of LTE Modems: Cat 4, Cat 6, Cat 12 and higher
The category of an LTE modem (Cat) defines the maximum download and upload speeds, the number of aggregated bands, and supported transmission techniques such as MIMO and QAM modulation.
- Cat 4 – up to 150 Mb/s download and 50 Mb/s upload. Sufficient for monitoring, simple IoT deployments, and small office support.
- Cat 6 – up to 300 Mb/s download (aggregation of two bands) and 50 Mb/s upload. Suitable for fixed company branches and as a backup link.
- Cat 12 – up to 600 Mb/s download and 100 Mb/s upload (aggregation of up to three bands, MIMO 4×4, 256QAM modulation). Appropriate for larger offices, warehouses, and manufacturing plants where video conferencing is conducted.
- Cat 16 and higher (LTE Advanced Pro) – from 1 Gb/s (Cat 16) to 2 Gb/s (Cat 20) download. Designed for intensive use and handling multiple users simultaneously.
Carrier Aggregation combines several frequency bands from the operator into one connection, increasing bandwidth. Higher category routers support more bands simultaneously. The values provided are maximum – actual speed depends on signal quality, base station load, and bands available from the operator at a given location.
5G Routers and 5G RedCap
A 5G router provides higher speeds, lower latency, and better handling of multiple devices than an LTE router. It can operate in NSA (Non-Standalone) mode, which uses the LTE core network, or SA (Standalone), fully based on 5G infrastructure. 5G routers are backwards compatible with LTE – in the absence of 5G coverage, they automatically connect to the 4G network.
5G RedCap (Reduced Capability) is a variant of the 5G standard designed for mid-tier IoT devices. RedCap devices have a simpler design and lower power consumption while offering sufficient bandwidth for many applications – typically around 150 Mb/s download. An extension is eRedCap with bandwidth limited to around 10 Mb/s, intended for industrial sensors and simple edge devices.
RedCap is used in video monitoring, wearables, FWA (Fixed Wireless Access) terminals, and industrial sensors – wherever full 5G performance would be cost-prohibitive.
Industrial LTE Routers
An industrial router is designed to operate in harsh environmental conditions. They are characterised by:
- Extended operating temperature range – typically from −40 °C to +75 °C, allowing installation in outdoor cabinets, machinery, or railway infrastructure.
- Robust construction – metal housing, resistance to vibrations and dust, DIN rail mounting; versions for outdoor installation have an IP66 or IP67 protection rating.
- Industrial interfaces – RS-232/RS-485 serial ports, digital I/O, Modbus protocol support.
- Wide power supply voltage range – facilitating power supply from vehicle installations and control cabinets.
In transport, models with GNSS receivers and two SIM slots are used, enabling vehicle location and increasing connection continuity.
Mobile Routers and 5G Hotspots
Mobile routers provide internet access on the go. They are powered by a built-in battery or via USB, allowing them to be activated anywhere. Depending on the model, they support from a dozen to several dozen devices simultaneously, which is sufficient for a team on a business trip or during an outdoor event. Models with Wi-Fi 6 offer higher bandwidth and more stable performance with multiple connected devices.
For permanent use in the office, a stationary router is more suitable – it usually offers greater Wi-Fi range, more Ethernet ports, and the ability to connect external antennas.
Teltonika – LTE and 5G Routers for Business and Industry
Teltonika is a Lithuanian manufacturer with one of the widest portfolios of mobile routers for industrial and IoT/M2M applications. The offering includes LTE and 5G routers with dual SIM support, and selected models also feature eSIM, GNSS receivers, and extended operating temperature ranges.
The devices operate under the RutOS system, which provides, among other things, VPN support, firewall, failover, and load balancing. For managing multiple devices, the manufacturer offers a cloud platform called RMS (Remote Management System), which allows monitoring and configuration of routers from a single panel.
See Teltonika routers in the Senetic offer
Frequently Asked Questions
What is the difference between an LTE router and a 5G router?
A 5G router provides higher speeds (theoretically up to several Gb/s), lower latency, and better handling of multiple connections simultaneously. An LTE router operates on a 4G network with maximum speeds ranging from 150 Mb/s (Cat 4) to 2 Gb/s (Cat 20).
What does the LTE modem category (Cat 4, Cat 6, Cat 12) mean?
The category of an LTE modem defines the maximum download and upload bandwidth, the number of aggregated bands, and support for MIMO and QAM modulation techniques. Cat 4 achieves up to 150 Mb/s download, Cat 6 – up to 300 Mb/s, and Cat 12 – up to 600 Mb/s. Actual speeds are lower and depend on signal quality, network load, available bands, and the antenna used.
What is the purpose of dual SIM in a router?
Dual SIM increases connection reliability. The router can automatically switch to another operator's SIM card in case of signal loss, exceeding data limits, or roaming issues. In routers with one modem, only one card is active at a time. Simultaneous use of two operators (load balancing) requires a router with two modems.
Can an LTE router act as a backup link for fibre optics?
Yes. In a failover configuration, the router monitors the availability of the primary link and automatically routes traffic through the mobile modem in case of failure, returning to it once the link is restored. Before purchasing, it is advisable to check the strength and quality of the signal from the chosen operator at the installation site.
What is the difference between an industrial router and a regular router with a SIM card?
An industrial router has an extended operating temperature range, a robust housing, RS-232/RS-485 and I/O interfaces, a wide power supply voltage range, and electromagnetic compatibility certifications, often including industry-specific certifications. A regular router with a SIM card is intended for use in an office or home and is not suitable for outdoor installation, in vehicles, or in industrial environments.
Is an external antenna needed for an LTE router?
In areas with good coverage, built-in or included antennas are usually sufficient. In areas with weaker signals – on the outskirts of cities, in buildings with thick walls, or in warehouses – a high-gain external antenna (measured in dBi), mounted outside the building, can significantly improve connection stability and bandwidth. It is advisable to choose a router with antenna connectors (most often SMA) and MIMO antennas that support the bands used by the operator.
What is eSIM and what is its purpose in a router?
eSIM is a built-in SIM chip that allows remote uploading of operator profiles without physically changing the card. This solution is effective in mass IoT/M2M deployments and in devices installed in hard-to-reach locations, as it simplifies logistics and operator changes. The support for eSIM and the number of profiles that can be stored should be checked in the specifications of the chosen model.
How to remotely manage multiple LTE routers?
Manufacturers provide dedicated platforms. Management is also possible via protocols or APIs. Platforms allow for remote software updates, APN and VPN configuration, monitoring of signal parameters and data usage, and managing hundreds of devices from a single panel.
Will an LTE router support surveillance cameras?
Yes, provided that sufficient bandwidth and a stable signal are ensured.
