Business mobile broadband uses the UK’s 4G and 5G mobile network to deliver internet connectivity — without any reliance on fixed line infrastructure like phone lines or fibre cables. It’s accessed via a mobile WiFi router or a data SIM inserted into a compatible device, and can be used as a primary connection or as a backup to a fixed line.

Automatic failover requires a dual-WAN router — a router with two separate internet connections — configured to monitor your primary fixed line. If the primary connection drops, the router detects the failure and switches all internet traffic to the mobile broadband circuit automatically, typically within seconds. When the primary line is restored, traffic switches back. Your team may not even notice the switch happened.

As a primary connection, mobile broadband is your main internet circuit — ideal for locations where fixed line installation isn’t practical, for remote workers, or for temporary sites. As a backup, it sits alongside your fixed line and only activates if the primary connection fails. Both use the same SIM and router hardware — the difference is in how your router is configured.

Speeds vary depending on your location, the network and whether 4G or 5G is available. On 4G, typical download speeds range from 20–60Mbps. On 5G where available, speeds can exceed 100–300Mbps. For a backup circuit, this is more than sufficient to keep business operations running during an outage. For primary use, 5G coverage makes mobile broadband a viable option for most business applications.

Yes — our mobile broadband plans include genuinely unlimited data with no caps and no throttling. This is particularly important for backup use, where the circuit may need to handle full business traffic including VoIP calls, cloud applications and video conferencing if the primary line fails.

Yes. A data SIM can be supplied for use in your own compatible router or firewall device. This is the preferred option for businesses that want to integrate mobile broadband into existing network infrastructure for automatic failover. Microcare can advise on compatible devices for your setup.

A mobile WiFi router and SIM can typically be dispatched within 1–3 working days and is ready to use straight out of the box — no engineer visit required. This makes it one of the fastest ways to add connectivity or backup resilience to your business.

Yes — provided your VoIP phone system is cloud-based, it will continue to work over a mobile broadband connection just as it would over a fixed line. Call quality depends on the speed and stability of the mobile signal at your location, but on a good 4G or 5G connection, VoIP performance is typically excellent.

Mobile broadband performance depends on the strength of the mobile signal at your premises. Before recommending mobile broadband as a backup or primary solution, Microcare will check coverage at your address. In areas where signal strength is marginal, an external antenna can significantly improve performance.

For many businesses — particularly those in locations where fixed line options are limited, or teams working remotely and on the move — mobile broadband on a 5G network is a practical and cost-effective primary connection. For businesses with high bandwidth demands or those requiring guaranteed speeds and SLAs, a leased line or FTTP is likely more appropriate. Microcare will advise on the right solution for your specific requirements.