Our review of 4G National broadband
4G & 5G Broadband specialists
4G Internet is a trading name of National Broadband Ltd, which specialises in 4G and 5G broadband services for homes and businesses across the UK. In areas with a good mobile signal, the service is straightforward to set up, with a router and SIM card supplied ready to use, so you can get online without an engineer visit. If you live in an area with weaker mobile coverage, or want the best possible performance, you can add a professional installation with an external aerial. This increases the upfront cost, but it can improve speed, stability and overall reliability.
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Prices start from £31.99 per month on a 24 month contract for unlimited home broadband. That makes 4G Internet worth considering if a standard fixed line connection is too slow, and it is usually a cheaper alternative than satellite broadband. Depending on your location, some customers may also be offered a 5G service, which can deliver much faster speeds than older FTTC connections.
One of the main barriers with mobile broadband is uncertainty. Speeds are not guaranteed, and performance will vary depending on signal strength, network congestion and the setup used at your property. To reduce that risk, 4G Internet checks the likely signal conditions before service is provided. If a simple indoor setup is unlikely to deliver the best results, you may be advised to choose a full installation with an external aerial.
National Broadband also has strong customer feedback, with a Trustpilot rating of 4.8 out of 5 in March 2026. There is also a 30 day money back guarantee, which gives you more time to test the service properly and decide whether it performs well enough for your needs.
Read 4G National broadband features in more detail
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4G Internet offers both 4G and 5G broadband routers, depending on the service and signal available at your address. In stronger signal areas, setup is straightforward, with a router and SIM card supplied for quick self installation. The 5G router is compatible with both 5G and 4G, while the 4G router is a lower cost option for areas without 5G coverage. Both are designed for home or business use, with wired connections available as well as Wi-Fi for wireless devices. For larger properties, a Mesh Wi-Fi add-on is also available if you need better wireless coverage beyond the area around the router.
Router specification
Supplied as either a 4G or 5G router, depending on the plan and coverage at your address
SIM based mobile broadband connection
Ethernet ports for wired devices
Dual band Wi-Fi for wireless devices
Up to 64 devices supported at once
5G router supports Wi-Fi 6 and is backward compatible with 4G
4G router supports Wi-Fi 5 and is intended as a lower cost option where 5G is not available
Designed for plug and play setup in stronger signal areas
Optional Mesh Wi-Fi available for larger properties
Can be paired with an external high-gain outdoor antenna where needed
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If you are in a weak or patchy signal area, or simply want the best possible performance, upgrading to a full installation is worth considering. It can be arranged when ordering or added later during the contract.
4G Internet offers a nationwide engineer installation service, with a high gain directional outdoor antenna fitted in the best position on your property and connected back to the router indoors. This setup works with both 4G and 5G services and is designed to improve signal strength, stability and speed compared with relying on a standard indoor setup alone. While a standard plug and play setup may be enough for lighter use, a professionally installed external aerial is more likely to benefit busier households and anyone working from home. In our own testing at a remote property in Wales, download speed increased from 6Mbps using indoor antennas to 35Mbps with an external aerial. That test was not carried out using 4G Internet’s own equipment, but it does show the kind of improvement that external equipment can make in the right conditions.
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4G Internet covers the vast majority of UK properties by using all four major mobile networks. Rather than being tied to one provider, you are connected to the strongest available signal for your specific location. The service is offered as both 4G and 5G broadband, depending on local coverage and the plan you choose. On plans marketed as '4G Boosted', typical download speeds are cited between 40 and 80Mb. However, as with any mobile based service, these figures are not guaranteed. Actual performance will depend heavily on local congestion and whether you are using an internal or external aerial.
For many households, this can be a practical alternative where standard broadband is poor or unavailable, especially when paired with an external antenna.
It is also worth checking the terms and conditions regarding data usage. While sold as unlimited, 'fair use' thresholds typically kick in between 650Gb and 1000Gb per month. This won't trouble most households, but if you're a heavy user and streaming TV content on multiple screens or downloading large game updates you may find your speeds restricted once these limits are reached.
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