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O2 SIM Only Deals

Compare the best O2 Sim Only Deals from as little as £11.00 per month

Compare O2 SIM Only deals. We have the best O2 SIM Only deals in the market. Save your SIM Only data when you're out and about, with the free O2 Wifi. O2 now have around 8000 wi-fi hotspots, so no need to worry about using all your data in one go. You can also call and text over wifi, when you don't have signal. With O2's free TU Go app.

You'll get great coverage too. O2 has promised Ofcom that 98% of the UK population can get calls, texts and 4G data, both indoors and out by the end of 2017. A recent Ofcom survey found that 86% of O2 customers are satisfied with the coverage they get. The best satisfaction results of all networks.

Download the O2 Priority app for exclusive offers to get VIP treatment with freebies and prize draws on Priority

O2 SIM Only FAQs

Which SIM card does my mobile phone use

  1. Choose the manufacturer of your mobile phone
  2. Choose Your mobile phone

Mobile phone outline
Standard Sim Card
Nano Sim Card

Our Best Selling Deal

O2 Multi SIM

  • Unlimited texts
  • 1000 minutes
  • 1Gb data
  • 12 Months contract
  • £11.00 per month
  • Total cost:£132.00
order from:

See this deal

Showing 12 of 101 O2 Sim Only Deals

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£11.00 per month
Total cost: £132.00
order from: See this deal

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
Unlimited minutes
Unlimited texts
3Gb data
12 months contract
£13.00 per month
Total cost: £156.00
order from: See this deal

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM + £60.00 Cashback paid automatically
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

+ £60.00 Cashback paid automatically

Cashback Explained

Reasons to buy

£60.00 Cashback paid automaticallyReceive £60.00 Cashback paid automatically when you purchase this O2 SIM Only Plan deal from Mobiles.co.uk.

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM + £96.00 Cashback by redemption
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

+ £96.00 Cashback by redemption

Cashback Explained

Reasons to buy

£96.00 Cashback by redemptionReceive £96.00 Cashback by redemption when you purchase this O2 SIM Only Plan deal from Mobiles.co.uk.

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

O2 SIM Only Plan

O2 4G:O2s network reaches even further across the UK, with 99% outdoor population coverage

O2 Travel:O2 travel is a free Bolt ON that you can add to your account. It's the perfect way to stay connected if you are travelling outside of our Europe Zone. To find out more and see destinations included :www.O2.co.uk/travel

O2 Priority:Priority is your in to offers, freebies, prize draws and privileges. From everyday rituals to once-in-a-lifetime experiences, it's all possible on Priority.Download the app or text Priority to 2020. 

Free O2 Wifi:With over 15,000 wifi hotspots across the country, getting online for free is never far away. Download the O2 wifi app to locate your nearest hotspot.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM + £60.00 Cashback paid automatically
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

+ £60.00 Cashback paid automatically

Cashback Explained

Reasons to buy

£60.00 Cashback paid automaticallyReceive £60.00 Cashback paid automatically when you purchase this o2 non-refresh deal from e2save.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM + £96.00 Cashback by redemption
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

+ £96.00 Cashback by redemption

Cashback Explained

Reasons to buy

£96.00 Cashback by redemptionReceive £96.00 Cashback by redemption when you purchase this o2 non-refresh deal from e2save.

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 Multi SIM
O2 Multi SIM
1000 minutes
Unlimited texts
1Gb data
12 months contract
£14.00 per month
Total cost: £168.00
order from: See this deal

Guaranteed/Automatic Cashback Your guaranteed cashback will be paid by BACS directly into your bank account within a certain number of days after connection. Please check the exact number of days when you purchase your simproduct.

Cashback by Redemption Cashback by redemption usually means you have to claim the money from the company. They will supply instructions when you purchase your simproduct. You have to be an organised person for this type of offer. But if your are, then there are some GREAT deals to be had.

You usually have to send them a voucher or your mobile phone bill several times over the length of your new contract, to prove your are still connected to the network and paying your bill. An example from MobilePhonesDirect is shown below:

The cashback is claimable by instalments in months 6, 9, 12, 15 and 18 and instructions on how to claim will be provided with your order.

Cashback will become void for customers who disconnect from the network prior to their payment being made.

O2 SIM Only FAQs

Yes it will. Whichever size of SIM card your existing phone or tablet takes, a O2 three-in-one SIM card will fit. Just pop out the size you need, either standard, micro or nano, and place it into your tablet or phone.

Yes you can. Just follow the steps below:

Make sure you can switch network: Check with your existing network to make sure there are no cancellation charges if you switch to O2. These cancellation charges will usually apply if you are still within the contract time length of your current contract.

Choose your new O2 SIM Only deal: Keeping your existing mobile phone and taking out a O2 SIM Only contract is a great way of saving money, in some cases it could half your current monthly cost. We have lots of O2 SIM Only deals for you to choose from.

Get a Porting Authorisation Code (PAC code): Once you have decided to leave your exisitng network and choosen your new O2 SIM Only deal, you need to call your existing network and ask them for a PAC Code. If you phone your existing network up, Ofcom have insisted that they have to give you your PAC Code immedialety. At this stage your network may try to tempt you to stay with them, offering you a better deal.

Give your PAC code to your new network: If your existing network has been unable to tempt you to stay with them, call up O2 and give them the PAC Code you got from your exisitng network, once you have given O2 your PAC Code, it usually take 24 hours for your mobile phone number to be switched.

4G comes as standard on all O2 purchases. You'll get great coverage too. O2 has promised Ofcom that 98% of the UK population can get calls, texts and 4G data, both indoors and out by the end of 2017. A recent Ofcom survey found that 86% of O2 customes are satisfied with the coverage they get. The best satisfaction results of all networks.

Check O2's signal strength in your area with the ofcom network checker.