Broadband in Cardiff
Home broadband in Cardiff from £10/month — 4G & 5G, no landline, no engineer.
Silux Mobile provides 4G/5G home broadband across Cardiff and Cardiff on Three's network. No phone line, no installation — router delivered next-day, plug in and go.
Why Cardiff Chooses Silux Broadband
No Landline in Cardiff
4G/5G home broadband for Cardiff — no phone line, no engineer, no installation.
Three 5G in Cardiff
Fast 5G/4G coverage across Cardiff and Cardiff — the same network as Three.
Plug & Play
Router delivered next-day. Plug in and you are online in minutes.
No Contract
30-day rolling broadband. Cancel anytime — no exit fees.
The Silux Mobile Promise
No price increases
Fixed price — no price increases during your contract
Free broadband upgrades
Free upgrades to faster plans and kit
No mid-contract rises
No annual or inflation-linked price hikes
No hidden fees
No setup fees, no engineer needed — cancel any time
Broadband Plans — Delivered to Cardiff
On Three 5G/4G. No landline, no contract.
Broadband Unlimited
Unlimited
£18/mo
- Unlimited data
- 4G/5G router
- No landline
- No engineer
Three 5G Broadband Coverage in Cardiff
Three's 5G/4G network covers Cardiff and Cardiff — fast enough for streaming, video calls and working from home. Check your postcode before ordering.
Check Your Cardiff PostcodeBroadband in Cardiff — FAQs
Can I get mobile broadband in Cardiff?
Yes. Silux Mobile's 4G & 5G home broadband works anywhere with Three coverage, including Cardiff and the wider Cardiff area — no landline or phone line required.
Do I need an engineer or a phone line in Cardiff?
No. There's no engineer visit and no landline. Your router arrives by next-day delivery to Cardiff, you plug it in, and you're online in minutes.
How fast is 5G broadband in Cardiff?
Where Three 5G is live in Cardiff, typical speeds are fast enough for 4K streaming, video calls and working from home. On 4G you'll comfortably browse, stream HD and game.
Is there a contract for broadband in Cardiff?
We offer no-contract, 30-day rolling broadband as well as longer plans. Cancel anytime on rolling plans — no exit fees.
Will my broadband price rise mid-contract?
No. There are no mid-contract or inflation-linked price rises. The price you start at in Cardiff is the price you keep.
Are broadband prices in Cardiff inclusive of VAT?
Yes. No hidden fees — every broadband price shown to customers in Cardiff is the price you pay, incl. VAT.