Status

Still trading

Wholesale network

Three's own 4G/5G mobile network

Who owns the brand

Not a fixed line at all: a hub with a SIM, sold in selected postcodes across several hundred towns and cities, advertised around 150Mb average download on 5G.

Three Broadband: 5G Home Broadband, Not a Fixed Line at All

Three home broadband is a different product from everything else on this site. There is no cable, no engineer and no Openreach line: you get a hub with a SIM in it, plug it into the mains, and it pulls signal from the nearest mast. Everything that follows from that is the reason to choose it or avoid it.

How it actually works

The hub is a router with a mobile connection instead of a socket. It takes 4G or 5G from Three's network and turns it into Wi-Fi in the house, which is why installation is a delivery rather than an appointment. Three advertises unlimited 5G home broadband across selected postcodes in several hundred UK towns and cities.

Advertised average download speeds sit in the region of 150Mb on the 5G product, with the standing caveat that real speed depends on coverage and on local network conditions. That caveat is doing more work here than it does on a fixed line, and it is the single most important thing to understand before ordering.

Because the connection is shared with every phone attached to the same mast, throughput moves through the day. A fixed line degrades at peak in a predictable, engineered way; a mobile connection degrades according to how many people are near you and what they are doing.

Where it is genuinely the better option

Three situations. If full fibre has not reached your address and the alternative is a slow copper line, a good 5G signal will comfortably beat it, and that is the most common reason people end up here.

If you rent, move often, or need broadband for a defined period, the absence of an installation is worth real money. Nothing is drilled, nothing needs a landlord's permission, and the hub goes in a box when you leave.

And if you need a connection this week, it is the only category that can deliver one. A fixed line involves a provisioning queue and possibly an engineer visit; a hub involves a courier.

Where it is the wrong choice

Latency is the honest weakness. Mobile connections carry more variable delay than fibre, which matters for competitive gaming and shows up occasionally on video calls as a stutter that has nothing to do with your Wi-Fi. If either is central to the household, check reviews specific to your area rather than the national average.

Anything that needs a stable inbound connection is also awkward. Mobile networks generally place customers behind shared addressing, so hosting a service, running a security camera you reach from outside, or using certain remote-access setups may not work as it would on a fixed line.

And a signal that is marginal at the window is not a broadband service. This is the failure mode people underestimate: the hub reports a connection, the speed test is acceptable at 11am, and the evenings are unusable.

How to check it before committing

Start with the coverage checker at your exact postcode, then treat the result as a claim rather than a measurement. The more informative test is your own phone: if you already have a Three handset, or can borrow one, the signal it holds indoors at the spot where the hub would live is the closest thing to a trial you will get.

Test in the evening, not at lunchtime. Peak is between roughly seven and ten at night on a mobile network, and a connection that is fine outside those hours and poor inside them is the typical shape of a disappointing 5G home broadband experience.

Then check the return window and the contract length together. A short cancellation period on a long contract is not flexibility; the useful combination is either a genuinely short term or a documented right to return the hub if the signal does not hold up in practice.

Placing the hub, which matters more than the tariff

Signal into the building is the whole game, so the hub belongs at the window facing the mast, not in the cupboard under the stairs where the old router lived. Upstairs generally beats downstairs, and a first-floor window on the correct side of the house can be the difference between two usable tiers of service.

That creates a second problem worth planning for. The best place for signal is rarely the best place for Wi-Fi coverage, so a house of any size may need a mesh point or a long Ethernet run from the hub to where people actually sit. Budget for it rather than discovering it.

Finally, remember what a power cut does. There is no separate phone line here, so a hub without power is a house with no internet and, if the household relies on internet calling, no phone. See the fixed-line providers and the mobile side.

Frequently asked questions