SIM Only Contracts

SIM Only Contracts

Save with a SIM Only contract with plans starting at just £5 a month.

  • Keep your existing phone and number
  • Choose between 12 or 1 month plans
  • Free roaming in 60 countries and tethering included with Advanced Plans
  • Wide range of plans including unlimited data plans


  • Deals
  • Overview
  • Why SIM Only?

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Order by:
SIM card Free
4GB data
Unlimited minutes
Unlimited
texts
12 monthcontract
£9.00 a month
SIM card Free
8GB data
600 minutes
Unlimited
texts
12 monthcontract
£12.00 a month
SIM card Free
30GB data
600 minutes
Unlimited
texts
12 monthcontract
£18.00 a month
SIM card Free
4GB data
Unlimited minutes
Unlimited
texts
12 monthcontract
£12.00 a month
SIM card Free
8GB data
600 minutes
Unlimited
texts
1 monthcontract
£13.00 a month
SIM card Free
8GB data
Unlimited minutes
Unlimited
texts
12 monthcontract
£20.00 a month
SIM card Free
30GB data
600 minutes
Unlimited
texts
1 monthcontract
£20.00 a month
SIM card Free
500MB data
200 minutes
Unlimited
texts
12 monthcontract
£5.00 a month

Overview

Switch to a Pay Monthly SIM Only plan and save money on your bill and get more flexibility with 1 month and 12 month contracts on Three.

Simply pop the delivered SIM card into your phone and you are good to go.

Have an existing number you want to keep? No problem follow the 3 simple steps here and Three will ensure your number is brought across when you switch.

Which type of SIM Card do I need for my phone?

The type of SIM card you need depends on the device you want to use with your SIM card. However, the good news is that when you order on Three you get a Trio SIM (Nano, Micro and Standard SIM combined). 

If in any doubt you can always call Three for help free on 0800 033 8004.

  • Nano-SIM - For use in most of the latest smartphones including the iPhone 7, Samsung Galaxy S8, HTC 11 and LG G6.
  • Micro SIM - For use in many newer smartphones including iPhone 4 and iPhone 4S.
  • Standard SIM - For use in the majority of older phones

Looking for a Pay As You Go SIM for your phone?

Why Choose SIM Only?

Why Choose a Pay Monthly SIM Only deal?

There are a host of reasons to choose a 3 SIM Only plan with the main ones being:

  • Save money on your bill

SIM Only plans offer you even better value because the operators don't have to offset the cost of a mobile phone enabling you to get more minutes, data and texts for less which is great news for those who are happy with their existing phone or tablet.

  • More flexibility with shorter contract lengths

SIM Only contracts come with shorter contract lengths than standard mobile 24 month contracts. SIM Only plans are available on 12 month or 1 month rolling contracts.

  • Keep your number

You can quickly and easily bring over your existing number to Three SIM Only.

  • Unlimited data

SIM Only contracts are available with unlimited data so you can browse without worrying about how much data you've used. 

Why Choose Three?

Advanced and Essential plans come with:

  • 4G at no extra cost
  • Control your spending so you never get a shock bill
  • Free 0800 calls
  • Unlimited texts
  • Free WiFi on the London Underground

Advanced Plans also come with additional benefits:

  • Free roaming in 60 countries with Feel At Home
  • Tethering included. Share internet with other devices and use up to 30GB per month tethering

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SIM DEAL!  4GB data, Unlimited mins just £9 a month (Was £17) See Deals