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Data SIM deals - tablets and mobile broadband

With a SMARTY SIM-only data plan, you pay for the data you use, not the data you don’t.

Get your SIM from £6.25

Switch to a simple SIM-only data plan

Perfect for tablets, dongles, WiFi routers and other mobile devices.

We're SMARTY – the SIM-only mobile network that's all about keeping things simple. Our monthly plans start from £6.25 and work with most mobile data devices: tablets, dongles, WiFi routers, laptops, games consoles and more. And you even get money off data you don't use.

data sim

Why use a SMARTY SIM?


No minimum contract


Easy to order and use


Money off unused data

We're featured on Read what they have to say.

data sim

How it works

number-1 Order your preferred plan online
number-2 Receive your SIM
number-3 Pop it in your device
number-4 Enjoy freedom!

Fast 4G and 3G powered by Three

bolt three logo bolt
We’re on the Three network, which means fast 4G and 3G for 98.3% of the UK population. You’re probably one of them. Check coverage

No long contracts, no ties

Simply pay for your first month up front, then on a rolling monthly basis. You're free to pause or cancel at any time – no commitment, no hassle. Unlike some SIM contracts, you’re not tied in and there’s no surprise charges. Oh, and there’s no need for a credit check.

SIM with wings

Only pay for what you use

Get money off unused data

Whatever monthly data discount plan you're on, you get credit for any data you don't use. We reckon this makes us one of the best deals around for SIM-only contracts.


£5 is the base monthly rate included in the price for all data discount plans, covering service costs plus all texts and calls if you’re using it on a phone. The rest is for data.


If you’ve got any data left after using your plan, we convert it to credit and discount if off your next month’s bill – at £1.25 per GB, the same rate you paid in your plan.


So, if you’ve got 3GB of unused data, you’ll get £3.75 off your next month’s plan. Lovely. We even calculate using remaining MBs, not GBs.

Don’t get stung for extra data
Extra data at only £1.25 per GB

All data discount plans are capped, so you'll never accidentally overspend if you run out of data. But if you find you need any extra, it's super easy to add more at a rate of £1.25 per GB.

Data add-ons also never expire. As long as you have a live, current SIM plan, it stays there. Forever. And ever.

Data add-ons
Unlimited calls texts

Unlimited UK standard texts and calls

Our SIMs are also ideal for phones. Each plan comes with unlimited UK standard texts and calls included, and you don’t have to change your number when switching.