30-day SIMs: here’s why we love them

Flexibility

Our 30-day SIMs give you the ultimate flexibility, as you have the freedom to switch or change plans without being tied to a long-term commitment.

Adaptibility

If you need a short-term connectivity solution, then the 1 month SIM is the one for you. And easily adjust your plan in line with your calls, text, and data needs.

Trial period

This SIM offers you the perfect opportunity to test our network, and see if it’s right for you. Spend 30 days getting a feel for our network, coverage and speed before you make a longer-term choice.

Add some extras to your 1 month SIM

Get even more from Three, with these unmissable benefits:

Paramount Plus

Enjoy peak entertainment

Get hit movies, exclusive premieres and brilliant shows you can’t find anywhere else with Paramount+. Even on the go.

Roaming built-in

Going travelling? Use your phone like you’re at home for up to 56 days in over 160 worldwide destinations.

Why get a 30-day SIM on Three?

What’s a 30-day SIM Only plan?

From only £19, you can connect to our super-fast 5G network for 30 days. Perfect if you’re testing our network, or if you’re visiting the UK, or if you need a temporary solution.

How do 30-day SIMs work?

Our 30-day SIM Only plan gives you access to our network for – you’ve guessed it – 30 days. After that, if you’re happy with it, you can keep it as a 30-day rolling SIM Only contract.

You can keep your existing number

Moving your number across to Three is simple. You’ll need a PAC or STAC code from your current provider, and then it’s just a case of sending a text. Find out how to switch to Three.

Upgrade easily

If you love your 1 month SIM – and we think you will – then upgrading to a plan with a device, or moving to a longer-term SIM plan with Three is simple, and it can all be done online.

Easy activation

Once your SIM arrives, put it in your phone, and you’ll get a text confirming that you’ve connected Three automatically. You’ll be ready to go in no time.

Increase your data limit

If you run out of data, it’s easy to get more. You can increase your 30-day allowance or purchase a data Add-on anytime online, and start using your new data straight away.

Three+ rewards app

Download our Three+ app to claim exclusive offers from brands like Cineworld and Caffè Nero. Plus, presale tickets to some of the UK’s biggest festivals.

Unlimited data

30-day plan

What's included:

  • 5G ready at no extra cost
  • Unlimited calls and texts
  • Three+ Rewards

25GB data

30-day plan

What's included:

  • 5G ready at no extra cost
  • Unlimited calls and texts
  • Three+ Rewards

4GB data

30-day plan

What's included:

  • 5G ready at no extra cost
  • Unlimited calls and texts
  • Three+ Rewards

Compare our SIM Only plans

30-day SIM – what’s included?

If you’re testing out our network, or only need to get connected for a month, then choose our 30-day SIM Only plan, for:

  • Your choice of data, from 4GB to Unlimited
  • Unlimited calls and texts
  • Optional add-ons like Worldwide Roaming
  • Three+ rewards

12 month SIM – what’s included?

With our 12 month SIM Only plan, you can choose our Lite, Value or Complete plans, with a whole host of benefits included, plus some great optional extras:

Included with all plans

  • Your choice of data, from 4GB to Unlimited
  • Unlimited calls and texts
  • Three+ rewards

Available on Value or Complete plans

  • Paramount+ for half the length of your plan
  • Use your phone on your travels for up to 28 days

24 month SIM – what’s included?

Choose our 24 month SIM Only plan for all the benefits of a 12 month SIM, but for even better value per month. With Lite, Value or Complete plans, pick the best option for you:

Included with all plans

  • Your choice of data, from 4GB to Unlimited
  • Unlimited calls and texts
  • Three+ rewards

Available on Value or Complete plans

  • Paramount+ for half the length of your plan
  • Use your phone on your travels for up to 56 days

Check out our SIM Only deals

From only £9, and with loads of different data options, there’s a SIM Only deal for everyone on Three. Check out our 12 month, 24 month and Pay As You Go SIMs.

Frequently asked questions

Our 30-day SIM is perfect if you’re just testing our network or only need connection to our network for a month. With the 30-day SIM, you get unlimited calls and texts, plus your choice of data. Plus, you’ll get access to our incredible Three+ rewards app, so you can save on meals out, coffee, flowers – a whole host of things. You’ve also got the option to buy extra add-ons like Worldwide Roaming and Paramount+.

Our 12 month SIMs give you the option to tailor your plan, with Three Your Way. You can choose from our Lite, Value or Complete plans – all of which include your choice of data, unlimited calls and texts, and access to Three+ rewards. Our Value and Complete plans also mean you can choose to add Paramount+ for up to the full length of your plan, and you can use your phone abroad for up to 28 days.

You can request a cancellation before the end of the 30 days, but your plan will still run for the full 30-day period. If you wish to cancel, then you need to give us 30 days’ notice.

All our offers and discounts can be found when you shop our full range of SIM Only deals. Our offers are always updating, so keep checking back.

Yes – you can keep your 30-day SIM as a rolling contract for as long as you like. Alternatively, you can switch to a Pay As You Go SIM, or upgrade to a longer SIM Only plan.

We have 1-month SIM contracts at Three, but we call them 30-day SIMs. It means you can connect to our network for 30 days, which is perfect if you’re trying out Three for the first time, or if you need a temporary solution.

Our 1-month – or 30-day SIMs, as we call them – gives you access to our network for 30 days. You can keep it rolling after that if you like to have the freedom of a 1-month contract, or you can upgrade to a longer plan, like our 12 month SIM or 24 month SIM plans.

Why choose Three?

Based on analysis by Ookla® of Speedtest Intelligence® data for Q1-Q2 2024. Ookla trademarks used under license and reprinted with permission.