Broadband in Cardiff
Home broadband in Cardiff from £15.95/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 free by Royal Mail Tracked 48, 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 free by Royal Mail Tracked 48. Plug in and you are online in minutes.
Plans to Suit You
From 1 month rolling to 36 months. No setup fee, and your price never rises mid-contract.
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 — router delivered to your door
Broadband Plans — Delivered to Cardiff
On Three 5G/4G. No landline, no setup fee — plans from 1 month rolling to 36 months.
Broadband Lite
Unlimited
£15.95/mo
- 4G router included
- No landline
- Free Tracked 48 delivery
- 24-month plan
5G Premium
Unlimited 5G
£19.95/mo
- Unlimited 5G
- Fastest speeds
- No landline
- 36-month plan
MiFi Portable
Unlimited
£15.95/mo
- Pocket router
- Use it anywhere
- No landline
- 24-month plan
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
Are you a Wi-Fi provider in Cardiff?
No — Silux Mobile is a mobile broadband provider. Every broadband package comes with a router, and the router creates your Wi-Fi, so all our mobile broadband packages in Cardiff come with Wi-Fi. No installation, no setup and no phone line: it is delivered to your door, you plug it into power, and you are online in minutes.
What router comes with Broadband Lite in Cardiff?
Broadband Lite comes with a 4G LTE router using MediaTek and Quectel chipsets, with LAN network ports and 2.4GHz Wi-Fi. It is included in the plan and delivered free to Cardiff by Royal Mail Tracked 48.
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 free Royal Mail Tracked 48 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?
Yes — you choose the length. Broadband plans in Cardiff start from 1 month: a rolling monthly contract (1-month minimum, then month to month with 30 days' notice), or a fixed term of 3, 6, 12, 18, 24 or 36 months. The longer the plan, the lower the monthly price. Short plans take a small refundable holding deposit; there is no setup fee on any plan.
Can I get rolling monthly broadband in Cardiff?
Yes. Broadband Lite (from £25.95/month) and 5G Premium (from £38.95/month) are available in Cardiff on a rolling monthly contract — no long minimum term, just 30 days' notice when you want to leave. The router is included and delivered free.
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.