Compare Sky Mobile SIMs: 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: 2nd July 2026.
Sky's best SIM only deals
The best value SIM only deal on Sky Mobile this month
just
£6
a month
✔ Unlimited mins and 10GB data See full deal
at sky.com
(opens in new window)
From all the options Sky Mobile have got available this July on SIM only, we think this discounted £6 12‑month deal is their best. For your £6 a month, you get 10GB data alongside unlimited minutes and texts:
You can get a lower-priced SIM with 10GB data or more elsewhere if you don't need it to use the O2 network. But if you do need that, it is the cheapest deal available. See lower-priced networks' deals here:
We also like their £11 for 50GB plan
just
£11
a month
✔ Unlimited mins and 50GB data See full deal
at sky.com
(opens in new window)
To get a bigger data allowance, we also think this discounted £11 Sky Mobile SIM is one of their best options. It comes with 50GB data, unlimited minutes and texts on a 12‑month deal:
It's definitely one of Sky's best. But it's not market-leading. You can get a similar plan on other providers for less, even if you need your SIM to use the O2 network. Here are other networks you can beat it on:
Their unlimited data for £20 SIM is another good option
just
£20
a month
✔ Unlimited mins and unlimited data See full deal
at sky.com
(opens in new window)
To get an even bigger chunk of data, Sky's discounted £20 SIM below is another of their best deals this month. For £20 a month, it offers unlimited data, unlimited minutes and texts on a 12‑month plan:
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. See the networks with cheaper plans 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