Sky Mobile SIM only deals: 10GB for £6, 50GB for £11
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We list the best of what's available on Sky's SIM only this month, after comparing each plan with other UK mobile networks. Last updated: 7th April 2026.
Sky's best SIM only deals
Our favourite current Sky Mobile SIM only deal
just
£6
a month
✔ Unlimited mins and 10GB data See full deal
at sky.com
(opens in new window)
Out of all the SIM only plans available this April on Sky Mobile, we'd say their best value deal is their discounted 12‑month SIM below, which gets you 10GB data, plus unlimited minutes and texts for £6 a month:
It's not actually the cheapest SIM only deal on the market at the moment with 10GB data or more but it is the lowest-priced plan on any provider using the O2 network. See who's offering it for less here:
Their 50GB for £11 SIM is another good option
just
£11
a month
✔ Unlimited mins and 50GB data See full deal
at sky.com
(opens in new window)
To get a bigger chunk of data, our next best pick of Sky Mobile SIM only plans is their discounted 12‑month £11 deal below, which gets you 50GB data and unlimited minutes and texts:
Even though it's in our pick of Sky's best SIM only deals, you can actually beat it on price with other providers, including ones that also use the O2 network. Here's where you can beat it on other networks:
Sky's unlimited data for £20 plan is a good option too
just
£20
a month
✔ Unlimited mins and unlimited data See full deal
at sky.com
(opens in new window)
If you need even more data, Sky Mobile are also offering this discounted £20 SIM, which includes unlimited data, unlimited minutes and texts on a 12‑month plan. It's another of their best deals:
While this is a good enough deal to make it into the best of Sky's SIMs, you can beat it for price (even if you definitely want a provider that uses the O2 network). See lower-priced networks' deals here:
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How Sky Mobile's deals compare with other networks
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How Sky Mobile’s SIM only prices and benefits stack up
In our Sky Mobile review we rated them highly for giving you full access to O2’s excellent network for call signal and 5G coverage, while offering lots of nice benefits on top (see our O2 vs Sky Mobile review here).
Their SIM plans are all on 12-month contracts and they don’t offer unlimited data plans, so they don’t offer as much choice as some networks. But there’s still a wide range of plans (find their best deals here).
Sky’s best value deals tend to be their mid-range data deals. They’re a cheaper way of getting onto the O2 network than going with O2 directly while also offering some great benefits that O2 don’t:
They offer an excellent unlimited free streaming data scheme on Sky TV apps and a great data rollover scheme that lets you keep data for 3 years. And you can gift data to other users on your account if need be.
Useful link: Read our full Sky Mobile review
What else you should know about Sky Mobile’s SIM only plans
You’ll get your SIM package within 1-3 working days of ordering. Your SIM package will come with each size of SIM to put into any phone. You can’t get an eSIM on Sky yet (these networks offer them).
Once your SIM card arrives, you have 14 days to cancel your SIM to get a full refund if you’re not happy with it. Here are the full details on how to do that.
To get on a Sky Mobile SIM only contract you’ll have to pass a credit check. There’s no way to pay as you go or buy a monthly bundle to avoid this.
If you want to switch from another network to Sky while keeping your number, you’ll have to request a PAC from your old network and send it to Sky. Here’s their full guide on how to do it.
Useful link: Compare all Sky SIMs