4G & 5G business broadband
4G and 5G routers and data SIMs that get a site online without waiting for a fixed line. For new premises, temporary sites, backup, and anywhere a cable cannot reach.
What it is
A business 4G or 5G router with a data SIM gives the whole site an internet connection using the mobile network, rather than a phone line or fibre.
Everyone connects to it over Wi-Fi or a cable, just like normal broadband. Where 5G is strong, speeds can rival fixed broadband. Where signal is weaker, an external antenna or a multi-network SIM makes a real difference.
Trade from day one while the fixed line is still being ordered and installed.
Construction sites, site cabins, events and pop-up shops.
Takes over automatically when the fixed line drops.
Rural sites and units where building a fixed line would be slow or costly.
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Mobile broadband is fast to deploy and very flexible. For a permanent, busy office, a fixed broadband line is usually still the better long-term choice.
Getting the best from it
Mobile broadband depends on the signal where the router actually sits. These are the things we look at before recommending anything.
High up and near a window usually beats a back office. An external antenna can transform a weak spot.
We check Vodafone, O2 and EE at your site rather than guessing from a map.
Mobile networks are shared, so speeds can dip when an area is busy. For guaranteed speed, a fixed line wins.
Signal patchy wherever you go? A multi-network SIM uses whichever network is strongest at the site.
Explore multi-network SIMsWhat we supply
Data-only SIMs for routers, tablets and laptops, with data pooled across the business.
IoT and data SIMsBusiness routers supplied ready configured, so you plug in and go.
For sites where the signal inside is weak but strong outside.
A fixed line as your main connection, with automatic 4G or 5G backup.
Backups and failover
Temporary and pop-up sites
Construction sites, site cabins, events and pop-up shops need connectivity quickly, and only for a while. A mobile broadband router can go live as soon as it arrives and move with you to the next site.
In the meantime it covers card machines, laptops, phones and CCTV, with no fixed line to install or cancel.
See how we got a Liverpool restaurant back online over 5G on a bank holiday.
Is it right for you?
Common questions
It depends on the signal where the router sits. Where 5G is strong, speeds can reach hundreds of Mbps. Where it is weaker, speeds are lower, which is why we check coverage at your site first.
For temporary sites, new premises and backup, very much so. For a permanent, busy office, a fixed line is usually more consistent, and many businesses use both, with mobile as the automatic backup.
It depends on what runs over it. Card machines and email use little; video calls and cloud backups use a lot. We size the plan to your usage and can pool data across SIMs.
Yes. A failover router uses your fixed line normally and switches to 4G or 5G automatically if it drops, then switches back when it returns.
We check coverage for your site before recommending anything. Where signal is weak indoors, an external antenna or a multi-network SIM usually solves it.
Yes. That is one of its biggest advantages. Subject to coverage at the new location, the router simply goes with you.
Vodafone, O2 or EE, whichever is strongest at your site. For sites where no single network is reliable, a multi-network SIM uses the best available.
Yes. Mobile broadband is the right call when you need to be online quickly, where no cable reaches, or as a backup. If you are staying put and a fixed line can be installed in a sensible timescale, that is normally the better long term answer and we will say so.
Tell us first, because most things are quicker to sort directly and we would rather fix a problem than escalate it. If we genuinely cannot settle it between us, Synergy Max is a member of CISAS, the Communication and Internet Services Adjudication Scheme, which is run by CEDR and approved by Ofcom. Following Ofcom’s rule change in April 2026 you can take a complaint there once it has been open for six weeks, or sooner if we write to confirm we have reached deadlock. It is free for you to use and the outcome is binding on us if you accept it. Our complaints code sets out the whole process.
Ask us
Send this and a real person will reply. No call centre, no obligation, and we will tell you honestly if we are not the right fit.
Tell us where and for how long. We will check coverage at the site and get the right router and SIM to you, ready to plug in.
