Data SIM Cards in Barry
Data-only SIM cards in Barry from £4/month on Three's 5G network. Ideal for tablets, dongles, MiFi and routers.
Silux Mobile delivers data SIMs to Barry and all of Vale of Glamorgan free by Royal Mail Tracked 48. Pure data, no calls or texts to pay for — on Three's 5G/4G network, on a 30-day rolling plan or a 3 to 24-month contract.
Why Barry Chooses Silux Data SIMs
Delivered to Barry
Free Royal Mail Tracked 48 delivery (2–3 working days) anywhere in the UK including Barry and Vale of Glamorgan.
Three 5G in Barry
Our SIMs use Three's 5G/4G network with strong coverage across Barry and surrounding areas.
From £5/Month
Cheaper than Lebara, Giffgaff and SMARTY — with 5G included. Roaming is an extra cost and varies by package.
Flexible Plans
Every plan starts from 1 month — SIM cards on 30-day rolling plans or 3 to 24-month contracts, and rolling monthly broadband.
The Silux Mobile Promise
No price increases
Your price is locked — no price rises during your contract, ever
Free upgrades
Upgrade your plan or SIM for free, any time
No credit checks
No credit checks on our SIM contracts
No hidden fees
No hidden fees, no price increases
Data SIM Plans — Delivered to Barry
Data-only SIMs on Three 5G. 30-day rolling or 3 to 24-month contracts.
Data Plus
30GB
£6/mo
- 30GB data
- Tablet & dongle ready
- 4G/5G
- 30-day or contract
Unlimited Data
Unlimited
£16/mo
- Unlimited data
- 5G speeds
- No throttling
- 30-day or contract
Three 5G Data Coverage in Barry
Three's 5G/4G network covers Barry and Vale of Glamorgan with strong signal for tablets, dongles and mobile routers. Over 99% UK population coverage.
Check Your Barry PostcodeData SIM Cards in Barry — FAQs
What happens if I go over the fair usage policy in Barry?
It depends on the network. As of August 2026, Three is more flexible and lenient with its fair usage policy, and it is rare that we need to warn customers. Vodafone and O2 are much stricter: if you go over more than twice, you will be notified to monitor your usage.
What is the cheapest data SIM in Barry?
Silux Mobile offers some of the cheapest data SIMs available in Barry — from £5/month on Three, Vodafone, EE and O2, on a 30-day rolling plan or a 3 to 24-month contract, with free Royal Mail Tracked 48 delivery to Vale of Glamorgan.
Does Three have good coverage in Barry?
Yes. Three's 4G and 5G network covers Barry and the surrounding Vale of Glamorgan area with strong indoor and outdoor signal. Check your exact postcode at siluxmobile.co.uk/network-coverage.
Can I get a data SIM delivered to Barry?
Yes. Silux Mobile delivers to all Barry addresses free by Royal Mail Tracked 48 (2–3 working days). Faster delivery can be chosen at checkout.
Will my price increase mid-contract?
No. Silux Mobile never raises your price mid-contract — no annual or inflation-linked rises. The price you sign up at in Barry is the price you keep.
Do you run a credit check in Barry?
No. There are no credit checks on our SIM contracts, so anyone in Barry can join regardless of credit history.
Are prices in Barry inclusive of VAT?
Yes. No hidden fees — every price shown to customers in Barry is the price you pay, incl. VAT. No setup fees and no price increases.