Cader NetworksHow home 4G broadband actually works
A small router (often with an external antenna) takes a SIM card from a mobile network. The router converts the 4G signal into a WiFi network in your home — same experience as any other broadband connection. Plug it in, the router boots, and you are online.
No engineer visit needed for an Openreach line. No cable to dig. No copper. The only physical work is mounting the antenna if signal at the property is weak, which most rural installs need.
When 4G beats fibre
It is not always second-best. In several situations, 4G is genuinely the better choice:
- Long copper line from the FTTC cabinet. If you are 1,000 metres from the cabinet on old copper, FTTC might give you 5 Mbps. A decent 4G plan will give you 50.
- FTTP not available, no rollout date in sight. Waiting two years for fibre is not a plan. 4G is a working solution now.
- You are moving or renting short-term. 4G has no install dig, no Openreach engineer visit, and you can take the router with you.
- The FTTP installer cannot reach the property. Older buildings or properties up unmade tracks sometimes have practical install issues with fixed-line broadband. 4G sidesteps all of that.
Signal reality at your address
4G broadband only works if 4G works at the property. The big variables are elevation, terrain and which carrier you can see. Most of open mid- and west-Wales has decent EE and Vodafone coverage. Steep valleys, north-facing slopes and properties tucked behind hills are where signal gets unreliable.
We check signal at the specific postcode before quoting. The bare phone-signal map covers most of it, but the real test is what an installed roof-mounted antenna sees, which is usually substantially better than what your phone reports from inside the house.
Multi-network vs single-network SIMs
This is the most consequential choice in a 4G install. A single-network SIM is locked to one carrier (EE, O2, Vodafone or Three). Cheap, simple, fine if that carrier has rock-solid signal at the address. Useless if they have an outage or you are on the edge of their coverage.
A multi-network "Anywhere" SIM is what we usually recommend for rural homes. It switches automatically between the four UK mobile carriers based on which one is strongest at any given moment. A few pounds more per month, but if EE has a tower fault for an afternoon, your broadband stays up.
The antenna question
Most rural homes need an external antenna for usable 4G broadband. The router itself is fine in a city but a stone-walled Welsh cottage absorbs RF signal aggressively. A decent panel antenna mounted on a chimney or external wall, properly oriented towards the strongest cell tower, typically doubles or triples the speed and stability versus an indoor-only setup.
We do the survey, mount the antenna, run the cable through a discreet entry point, and configure the router for the right carrier band. It is usually a half-day visit.
Pricing and contracts
Home 4G plans run from around £29.99/mo inc VAT for the entry tier. Higher-data plans (suitable for households streaming heavily) sit a little higher. We offer 24-month and 12-month contract options. The hardware (router and antenna) is included on contract terms or available outright.
If you are eligible, the Access Broadband Cymru grant can cover the install cost.
Install timeline
Most 4G installs run a week or two from order to live. We confirm signal, source the kit, book the install visit and have you online before any equivalent fibre install would have even cleared the Openreach build queue.
When 4G is NOT the right answer
- You have FTTP available — take it instead.
- You have FTTC at 50+ Mbps and stable — usually cheaper and no signal risk.
- Signal at your address is genuinely poor on all four carriers — Starlink is the better option.
- You need symmetric upload (e.g. running a home server or constant large uploads) — 4G upload is asymmetric and slower than download. A fibre line is better.
What we install at Cader Networks
Multi-network 4G routers, external antennas where needed, signal surveys before quoting, and ongoing support. See our home 4G broadband page for the install detail and pricing. We install across north Wales, Ceredigion, Powys and Gwynedd.