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Why pay monthly on SIM only?

  • Great for saving money on your monthly bill
  • Perfect if you're happy with your current phone or tablet and are waiting for the next big smartphone
  • Loads of choice with our wide range of networks, plus you'll still get all the network benefits

Happy with your current network and want to keep your number?

View all SIM only upgrade plans

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What SIM size do I need?

There are four different SIM types. You'll need to get the correct SIM for your phone, or it won't fit in the phone's SIM card slot.

Standard SIMMicro SIM
Another very common SIM size that's used in lots of older smartphones and most feature phones like the Samsung Galaxy Ace, Nokia Asha phones and older BlackBerry phones. This is the second smallest SIM, and is the most common one used in smartphones. iPhone 4 and 4S, Sony Xperia™ Z1, Samsung Galaxy S5 and S4 all use this size.
Nano SIMBlackBerry® SIM
A nano SIM is the smallest SIM card and is used in phones like iPhone 5s, 5c and 5, HTC One (M8) and the Nokia Lumia 1520. This is the same as a standard SIM but gives older BlackBerry® devices access to BlackBerry services. This is not needed for new BlackBerry phones running BlackBerry 10 OS such as the BlackBerry® Q10.
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Effective monthly cost

The Effective monthly cost helps you to compare the total amount you'll pay for different deals, including those with an upfront cost, cashback, or bill credits, helping you find the best value deal.

The Effective monthly cost is NOT the amount that will be taken from your bank account by direct debit every month (this is the 'Monthly cost').

Included in the Effective monthly cost figure is:

  • The total line rental cost over the life of the contract (Monthly cost multiplied by the length of the contract in months)
  • Any cashback promotions or bill credits that will be received through the duration of the contract (if applicable)

Networks may increase Monthly price in line with Retail Price Index (RPI).

  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
UK's Lowest O2 1000 any network Unlimited 1GB 4G £72 auto cashback £16 £10
UK's Lowest O2 Unlimited any network Unlimited 1GB 4G £72 auto cashback
 
£19 £13
Bestselling O2 Unlimited any network Unlimited 5GB 4G Samsung Galaxy Tab 3 7" Wi-Fi White
 
£25 £25
  T-Mobile 2000 any network Unlimited Unlimited £68.97 auto cashback
 
£22.99 £17.25
Bestselling Vodafone 300 any network 500 250MB £15 auto cashback £9 £7.75
Bestselling EE Unlimited any network Unlimited 4GB 4G £32 auto cashback £22.99 £20.30
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling O2 100 any network Unlimited 100MB £40 auto cashback £9 £5.67
UK's Lowest T-Mobile 250 any network 500 500MB £20 auto cashback
 
£8.99 £7.33
UK's Lowest O2 300 any network Unlimited 300MB £40 auto cashback £11 £7.67
Bestselling Vodafone 300 any network 500 250MB £15 auto cashback £9 £7.75
Bestselling O2 500 any network Unlimited 500MB 4G £50 auto cashback £14 £9.84
UK's Lowest O2 1000 any network Unlimited 1GB 4G £72 auto cashback £16 £10
Bestselling T-Mobile 500 any network Unlimited 1GB £20 auto cashback £11.99 £10.33
Bestselling Vodafone 900 any network Unlimited 500MB £30 auto cashback £13 £10.50
UK's Lowest EE 1000 any network 500 250MB 4G £12 auto cashback £11.99 £10.99
UK's Lowest O2 Unlimited any network Unlimited 1GB 4G £72 auto cashback
 
£19 £13
Bestselling T-Mobile 1000 any network Unlimited 3GB £36 auto cashback £16.99 £13.99
UK's Lowest O2 Unlimited any network Unlimited 2GB 4G £72 auto cashback
 
£21 £15
Bestselling Orange 2000 any network Unlimited 500MB £15 auto cashback £16.99 £15.74
Bestselling EE 2000 any network Unlimited 2GB 4G £32 auto cashback £19.99 £17.30
  T-Mobile 2000 any network Unlimited Unlimited £68.97 auto cashback
 
£22.99 £17.25
UK's Lowest O2 Unlimited any network Unlimited 5GB 4G £84 auto cashback £25 £18
Bestselling Orange Unlimited any network Unlimited 1GB £36 auto cashback
 
£22.99 £19.99
UK's Lowest O2 Unlimited any network Unlimited 8GB 4G £120 auto cashback £30 £20
Bestselling EE Unlimited any network Unlimited 4GB4G £32 auto cashback £22.99 £20.30
Bestselling T-Mobile 2000 any network Unlimited Unlimited £30 auto cashbac £22.99 £20.49
UK's Lowest Vodafone Unlimited any network Unlimited 3GB 4G £66 auto cashback £26 £20.50
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling O2 Unlimited any network Unlimited 5GB 4G Samsung Galaxy Tab 3 7" Wi-Fi White
 
£25 £25
Bestselling O2 500 any network Unlimited 500MB 4G £50 auto cashback £14 £9.84
UK's Lowest O2 1000 any network Unlimited 1GB 4G £72 auto cashback £16 £10
UK's Lowest O2 Unlimited any network Unlimited 1GB 4G £72 auto cashback
 
£19 £13
  O2 Unlimited any network Unlimited 2GB 4G Kindle Fire HD 7" 8GB
 
£21 £21
UK's Lowest O2 Unlimited any network Unlimited 2GB 4G £72 auto cashback
 
£21 £15
UK's Lowest O2 Unlimited any network Unlimited 5GB 4G £84 auto cashback £25 £18
  EE 500 any network 500 100MB 4G £9.99 £9.99
UK's Lowest EE 1000 any network 500 250MB 4G £12 auto cashback £11.99 £10.99
  EE 1000 any network Unlimited 500MB 4G £13.99 £13.99
  EE 1000 any network Unlimited 1GB 4G £16.99 £16.99
Bestselling EE 2000 any network Unlimited 2GB 4G £32 auto cashback £19.99 £17.30
UK's Lowest O2 Unlimited any network Unlimited 8GB 4G £120 auto cashback £30 £20
Bestselling EE Unlimited any network Unlimited 4GB4G £32 auto cashback £22.99 £20.30
UK's Lowest Vodafone Unlimited any network Unlimited 3GB 4G £66 auto cashback £26 £20.50
Bestselling O2 Unlimited any network Unlimited 5GB 4G Samsung Galaxy Tab 3 7" Wi-Fi Black
 
£25 £25
  Vodafone Unlimited any network Unlimited 9GB 4G UNLIMITED DATA for 3 months £41 £41
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling O2 1000 any network Unlimited 1GB 4G £72 auto cashback £16 £10
Bestselling O2 100 any network Unlimited 100MB £40 auto cashback £9 £5.67
UK's Lowest O2 300 any network Unlimited 300MB £40 auto cashback £11 £7.67
Bestselling O2 500 any network Unlimited 500MB 4G £50 auto cashback £14 £9.84
UK's Lowest O2 Unlimited any network Unlimited 1GB 4G £72 auto cashback
 
£19 £13
  O2 Unlimited any network Unlimited 2GB 4G Kindle Fire HD 7" 8GB
 
£21 £21
UK's Lowest O2 Unlimited any network Unlimited 2GB 4G £72 auto cashback
 
£21 £15
Bestselling O2 Unlimited any network Unlimited 5GB 4G Samsung Galaxy Tab 3 7" Wi-Fi Black
 
£25 £25
Bestselling O2 Unlimited any network Unlimited 5GB 4G Samsung Galaxy Tab 3 7" Wi-Fi White
 
£25 £25
UK's Lowest O2 Unlimited any network Unlimited 5GB 4G £84 auto cashback £25 £18
UK's Lowest O2 Unlimited any network Unlimited 8GB 4G £120 auto cashback £30 £20
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling Vodafone 300 any network 500 250MB £15 auto cashback
UNLIMITED DATA for 3 months
£9 £7.75
Bestselling Vodafone 900 any network Unlimited 500MB £30 auto cashback
UNLIMITED DATA for 3 months
£13 £10.50
  Vodafone 1200 any network Unlimited 750MB UNLIMITED DATA for 3 months £16 £16
UK's Lowest Vodafone Unlimited any network Unlimited 3GB 4G £66 auto cashback
UNLIMITED DATA for 3 months
£26 £20.50
  Vodafone Unlimited any network Unlimited 9GB 4G UNLIMITED DATA for 3 months £41 £41
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling Orange 500 any network 500 100MB £8.99 £8.99
  Orange 1000 any network Unlimited 250MB   £11.99 £11.99
Bestselling Orange 2000 any network Unlimited 500MB £15 auto cashback £16.99 £15.74
Bestselling Orange Unlimited any network Unlimited 1GB £36 auto cashback
 
£22.99 £19.99
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling EE Unlimited any network Unlimited 4GB4G £32 auto cashback £22.99 £20.30
  EE 500 any network 500 100MB 4G £9.99 £9.99
UK's Lowest EE 1000 any network 500 250MB 4G £12 auto cashback £11.99 £10.99
  EE 1000 any network Unlimited 500MB 4G £13.99 £13.99
  EE 1000 any network Unlimited 1GB 4G £16.99 £16.99
Bestselling EE 2000 any network Unlimited 2GB 4G £32 auto cashback £19.99 £17.30
  • Bestsellers
  • Cashback
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling T-Mobile 500 any network Unlimited 1GB £20 auto cashback £11.99 £10.33
Bestselling T-Mobile 1000 any network Unlimited 3GB £36 auto cashback £16.99 £13.99
UK's Lowest T-Mobile 250 any network 500 500MB £20 auto cashback
 
£8.99 £7.33
  T-Mobile 2000 any network Unlimited Unlimited £68.97 auto cashback
 
£22.99 £17.25
Bestselling T-Mobile 2000 any network Unlimited Unlimited £30 auto cashback £22.99 £20.49
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling Virgin Media 1200 any network Unlimited 1GB £12 £12
Bestselling Virgin Media 150 any network Unlimited 500MB £7 £7
Bestselling Talkmobile 250 any network 5000 500MB £7 £7
Bestselling Orange 500 any network 500 100MB £11.99 £11.99
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  O2 500 any network Unlimited 500MB 4G   £20 £20
  O2 Unlimited any network Unlimited 1GB 4G   £25 £25
  O2 Unlimited any network Unlimited 5GB 4G   £30 £30
  EE 1000 any network Unlimited 250MB 4G   £14.99 £14.99
  EE 1000 any network Unlimited 500MB 4G   £16.99 £16.99
  EE 1000 any network Unlimited 1GB 4G   £19.99 £19.99
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  O2 100 any network Unlimited 100MB   £12 £12
  O2 300 any network Unlimited 300MB   £15 £15
  O2 500 any network Unlimited 500MB 4G   £20 £20
  O2 Unlimited any network Unlimited 1GB 4G   £25 £25
  O2 Unlimited any network Unlimited 5GB 4G   £30 £30
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  Vodafone 300 any network 500 250MB £11 £11
  Vodafone 900 any network Unlimited 500MB £15 £15
  Vodafone 1200 any network Unlimited 750MB £18 £18
  Vodafone Unlimited any network Unlimited 1GB £23 £23
  Vodafone Unlimited any network Unlimited 2GB £28 £28
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  Orange 500 any network 500 100MB £11.99 £11.99
  Orange 1000 any network Unlimited 250MB £14.99 £14.99
  Orange 2000 any network Unlimited 500MB £19.99 £19.99
  Orange Unlimited any network Unlimited 1GB £25.99 £25.99
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  EE 1000 any network Unlimited 250MB 4G £14.99 £14.99
  EE 1000 any network Unlimited 500MB 4G £16.99 £16.99
  EE 1000 any network Unlimited 1GB 4G £19.99 £19.99
  EE 2000 any network Unlimited 2GB 4G £22.99 £22.99
  EE Unlimited any network Unlimited 4GB 4G £25.99 £25.99
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  T-Mobile 250 any network 500 500MB £11.99 £11.99
  T-Mobile 500 any network Unlimited 1GB £14.99 £14.99
  T-Mobile 1000 any network Unlimited 3GB £19.99 £19.99
  T-Mobile 2000 any network Unlimited Unlimited £25.99 £25.99
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
  Virgin Media 150 any network Unlimited 500MB £7 £7
  Virgin Media 250 any network Unlimited 1GB £10 £10
Bestselling Virgin Media 1200 any network Unlimited 1GB £12 £12
  • Bestsellers
  • 4G
  • O2
  • Vodafone
  • Orange
  • EE
  • T-Mobile
  • Virgin Media
  • Talkmobile
 NetworkUK MinutesUK TextsUK DataGifts / offerMonthly costEffective monthly cost Effective monthly costChoose your SIM Choose your SIM
Bestselling Talkmobile 250 any network 5000 500MB £7 £7
  Talkmobile 500 any network 5000 500MB £10 £10
  Talkmobile 750 any network 5000 1GB £15 £15

* Comparison made on a like-for-like basis. Excludes cashback via redemption and other promotional offers

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