Sky Mobile SIM only deals: 10GB for £6, 50GB for £11
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We compare the whole SIM only range on Sky to find the ones that come out best in price comparisons with other networks. Last updated: 26th May 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)
Out of all the SIM only plans available this May 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:
You can beat it for price if you don't need your SIM to be with a provider using the O2 network. But if that's a must, then it is the lowest-cost SIM with 10GB data or more. See lower-priced networks' deals here:
£11 for 50GB is Sky's next best SIM deal in May
just
£11
a month
✔ Unlimited mins and 50GB data See full deal
at sky.com
(opens in new window)
For more monthly data, have a look at Sky Mobile's discounted 50GB SIM below at £11 a month, as it's another good deal. It's on a 12‑month plan and comes with 50GB data, unlimited minutes and texts:
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). Here are other networks you can beat it on:
There's also a nice unlimited data for £20 plan with them this month
just
£20
a month
✔ Unlimited mins and unlimited data See full deal
at sky.com
(opens in new window)
To get even more data, another option for you on Sky is their discounted 12‑month SIM below, which costs £20 a month for unlimited data and comes with unlimited minutes and texts:
It's a good enough deal to get into Sky's best SIMs but you can actually get a lower price for a similar plan elsewhere, even if you definitely want it to use the O2 network. See the networks with cheaper plans here:
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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