Data SIM Cards — Three 5G Network

Data SIM Cards UKData-only SIM for tablet, router, MiFi & IoT

Silux Mobile data SIM cards are perfect for any device that needs internet without calls. Tablets, MiFi routers, home broadband, IoT devices — all running on Three's 5G network. From just £5/month, no contracts.

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No Calls or Texts — Pure Data 5G Included Free 71+ Countries Go Roam

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

What is a Data SIM Card?

A data SIM card is a SIM that provides mobile internet access without calls or texts. You insert it into a tablet, MiFi device, 4G/5G router, dongle or any data-capable device. Data SIM cards from Silux Mobile run on Three's award-winning 5G network, giving you fast, reliable internet wherever you are in the UK. As a UK data SIM provider and SIM only provider, Silux Mobile keeps things simple — no price rises and no credit checks.

Who Uses Data SIM Cards?

Data SIM cards are incredibly versatile. Here are the most popular uses:

Tablet & iPad SIM

Keep your tablet connected with a dedicated data SIM. No WiFi hotspot needed.

MiFi & Router SIM

Insert into any 4G/5G router to create your own WiFi hotspot at home or on the go.

Home Broadband

Replace your landline broadband with a data SIM in a 4G/5G router.

Business & IoT

Connect IoT devices, GPS trackers, CCTV cameras and remote sensors.

Backup Internet

Keep a data SIM as a backup internet connection for outages.

Travel SIM

Use your data SIM in 71+ countries with Three Go Roam included.

Data SIM Card Plans

All plans on Three's 5G network. No contract. Free delivery.

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Why Silux Mobile Data SIMs Beat the Rest

Unlike Lebara, Giffgaff and iD Mobile who have no dedicated data SIM offering — Silux Mobile specialises in data-only SIMs. We also include Three Go Roam in 71+ countries, which SMARTY and Vodafone's budget plans don't offer.

✅ Free

5G Included

71+ countries

Go Roam

30-day rolling

No Contract

Royal Mail Tracked 48

Free Delivery

Data SIM Card FAQs

What is a data SIM card?
A data SIM card is a SIM that provides mobile data (internet access) without calls or texts. They're perfect for tablets, MiFi routers, laptops, IoT devices, GPS trackers and mobile broadband. Silux Mobile data SIMs run on Three's 5G network.
Can I use a data SIM in a router or MiFi device?
Yes! Our data-only SIM cards work in all MiFi devices, 4G/5G routers, portable WiFi hotspots and USB dongles. Simply insert the SIM and share the connection with multiple devices.
What is the difference between a data SIM and a regular SIM?
A regular SIM includes calls, texts and data. A data SIM is data-only — no calls or texts. They're cheaper for devices that only need internet access, like tablets, routers and IoT devices.
Do data SIM cards work for home broadband?
Yes — many customers use our data SIM cards as mobile broadband for home internet. Pop the SIM into a 4G/5G router and enjoy fast home broadband without a fixed landline.
Can I use a data SIM in any country?
Yes — our data SIM cards on Three network include Go Roam, which lets you use your data allowance in 71+ countries at no extra cost. Perfect for frequent travellers.
Is there a minimum contract on data SIM cards?
No. All our data SIM plans are available on flexible 30-day rolling plans. No minimum term, no cancellation fees.
Will my price increase during my contract?
No. Silux Mobile never raises your price mid-contract — there are no price increases during your contract and no annual or inflation-linked price rises. The price you sign up at is the price you pay.
Are plan and SIM upgrades free?
Yes. Upgrades are free — move to a bigger data plan or a better SIM whenever you like at no extra cost, with no upgrade or admin fees.
Do you run a credit check?
No. There are no credit checks on our SIM contracts, so you can join Silux Mobile regardless of your credit history. No credit check is required to order or activate your SIM.
Is Silux Mobile a good mobile provider?
Yes. Silux Mobile is a UK SIM-only and mobile network provider on Three's 5G network, with cheap SIM deals, no price rises, free upgrades and no credit checks on SIM contracts.

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