SIM Only deals from Three and iD go head-to-head with big data for less

Deals
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Unlimited data? 5G-ready? Cheap bills? These stunning SIM-only deals have something for everyone.

Three Unlimited SIM only deals
(Image credit: Future)

We've got a bunch of fantastic SIM only deals for you this weekend with arguably the best deals of the year so far no matter how much data you're after. Three's Unlimited SIM only deal leads the way, but there's a seriously cheap 4GB data that might work for you too. Want to split the difference? How about a 100GB deal on a rolling 30-day contract?

The benefits of going SIM only are pretty clear; you're able to change your phone whenever you want or, perhaps more importantly, you can put the SIM into a WiFi hotspot and share the unlimited data love. The versatility is clear and it's usually cheaper overall because you aren't paying a premium for the phone and less data.

If you aren't sold already, Three has one final thing up its sleeve: global roaming at no extra charge. While the pandemic might have cancelled your holiday plans this summer, it seems likely that things will be back to normal(ish) by next year and so you won't be caught out.

Today's best SIM only deals

Three SIM Only | 12 months | Unlimited everything | 5G Ready | £18/month | Available from Three

Three SIM Only | 12 months | Unlimited everything | 5G Ready | £18/month | Available from Three
This deal has it all: low price, unlimited everything, Go Binge, 5G, global roaming, and the knowledge that Three offers some of the strongest coverage across the UK. 

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Three SIM Only | 12 months | 4GB data | Unlimited calls and texts | 5G Ready | £6/month | Available from Three

Three SIM Only | 12 months | 4GB data | Unlimited calls and texts | 5G Ready | £6/month | Available from Three
If you're pretty good at mainly using your phone on Wi-Fi, then a lower data deal can save you a lot of money. 4GB is more than enough for lots of email/web browsing and will give you a fair bit of music streaming and social media browsing too. £6 a month is a steal.

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But what if you don't fancy a contract that's 12 months long? Luckily, we have another option for you, this time coming from iD Mobile and its one month rolling contracts.

iD Mobile SIM Only | 30 days | 100GB data | Unlimited calls and texts | £15/month | Available from Mobiles.co.uk

iD Mobile SIM Only | 30 days | 100GB data | Unlimited calls and texts | £15/month | Available from Mobiles.co.uk
As we said up the top, flexibility is the name of the game and sometimes being tied down to a 12-month contract is too much. iD Mobile has a solution: one-month rolling contracts with 100GB of data at just £15 a month/ that's the best value big data SIM only deal we've ever seen on a 30-day term.

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So, if you're in the market for getting in on some hot SIM Only deals action, these two are pretty much as good as it gets.

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Max Slater-Robins

Max Slater-Robins has been writing about technology for nearly a decade at various outlets, covering the rise of the technology giants, trends in enterprise and SaaS companies, and much more besides. You can find his words on Techmeme, Business Insider, TechRadar, Slate, GamesRadar, Neowin, T3, and more.