Sim only deals

A new sim only deal is perfect if you are happy with your phone and just need a tariff. You get all the benefits of O2 without having to change your phone or number.


Depending on your phone and location, you may be able to get 4G speeds. But don't worry if your phone isn't 4G ready or you're not in a 4G area -  you can still use 3G.

Your phone

What type of phone have you got?

Choose a monthly sim only tariff

Take a look at our tariffs, and choose the one that's best for you.

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Duration Minutes Texts DataOpen pop-up 3G/4G ready Extras Monthly
12 Months 100 Unlimited 100MB 3G £9.00
30 Days 100 Unlimited 100MB 3G £12.00
12 Months 300 Unlimited 300MB 3G £11.00
30 Days 300 Unlimited 300MB 3G £15.00
12 Months 500 Unlimited 500MB 4G ready £14.00
30 Days 500 Unlimited 500MB 4G ready £20.00
12 Months 1000 Unlimited 1GB 4G ready £16.00
12 Months Unlimited Unlimited 1GB 4G ready £19.00
30 Days Unlimited Unlimited 1GB 4G ready £25.00
12 Months Unlimited Unlimited 2GB 4G ready £21.00
12 Months Unlimited Unlimited 5GB 4G ready 6 months access to Sun+ £25.00
30 Days Unlimited Unlimited 5GB 4G ready £30.00
12 Months Unlimited Unlimited 8GB 4G ready 12 months access to Sun+ £30.00

Important information

Important details about your sim only tariff

From 2015, your Simplicity Pay Monthly plan will be adjusted every year on your April bill by the Retail Price Index (RPI) rate of inflation* announced in the preceding February. Find out more at

* To find out more about RPI, see We use: Retail Price Index (RPI) rate of inflation: Percentage change over 12 months.

Sim only tariffs and existing contracts

Before you can use an O2 sim card in your existing phone you may need to get your previous network or service provider to unlock the handset. You will need to wait until the expiry of any existing minimum term you have agreed and a charge may be payable. 30 days' notice required for cancellation. sim Only 12 Month customers are subject to a minimum contract term of 12 months and are eligible for an upgrade after 9 months.

Inclusive minutes and texts

Your inclusive minutes and texts your sim only tariff can be used to call any UK network or landline. What are my additional charges?

Inclusive minutes can be used for calls to standard UK landlines (starting 01, 02 and 03) and all UK network mobiles. It excludes calls to special numbers. See

Your inclusive text allowance can be used for UK text messaging. Picture messages will be charged at 40p per message.


UK data usage only. See full terms.

Terms and conditions

Check out the full terms and conditions of our sim only tariffs.

How to buy

Buy online or call O8442 020202

Why O2?

Our sim only deals offer our best ever value tariffs by themselves; add Priority Moments and you get even more value.

My O2

All of our sim only deals allow you to register and access My O2. You can view your bill or balance, see offers, manage your account and update your personal details. It's your service - have it your way.

What is mobile internet data?

Whenever you use the internet on your phone, you're using data.

Whether it's browsing the web, sending an email, or watching a TV programme. Downloading and using apps will also take a slice out of your data allowance.

Watching videos on YouTube and streaming music tend to use quite a bit of data, but using Twitter or Facebook and browsing the internet in general uses a lot less.

What does my allowance mean?

Here's a bit of a breakdown to show you what you can do with your data allowance.

  100MB 500MB 1GB
Send emails (no attachments)* 100,000 500,000 1,000,000
Send emails (with attachments) 200 1,000 2,000
Visit a site (Twitter or a blog) 1,000 5,000 10,000
Visit rich content sites (BBC, Guardian) 300 1,500 3,000
Watch youtube (4.5 mins long video) 12 60 120

*Remember – this is not inclusive. You can't send 100,000 emails and watch 12 YouTube videos when you've got a 100MB Data allowance. But you can mix it up. For example, by only watching 6 videos you could then still send 50,000 emails… Make sense?

No data?

If you go over your allowance, we'll send you a message to let you know and your connection speed will slow down.

Without any data you can still use the internet on your mobile with our Web Daily service, but you won't be able to use all your phone's features, like visual voicemail on iPhone or BlackBerry email. With Web Daily you can use up to 50MB a day without ever being charged more than £1 a day.

Keep track of your allowance

The best way of tracking how much data you've used is by going to your My O2 account. This will show you how many megabytes (MB) you have left. You can also add on a data Bolt On if you want to increase your data usage.

And remember, Wi-Fi does not count towards your data allowance. So switch to Wi-Fi whenever you can to save on your data usage. Why not see if there is an O2 Wi-Fi hotspot near you.


Call charges outside your allowance

UK voice calls1 40p/min
Video calls 50p/min
UK text message2 15p per message
Picture message (MMS) 40p per message
Voicemail 9013 35p/min
UK browsing4 Up to max £1/day
O2customer services5 Free from your O2 mobile
O2 Directories 1184026 £1.00/min (minimum charge £1.00)
1200 Trafficline™ 45p
International calls and texts See
Roaming calls, texts and data See
Premium Rate numbers See
Calls to 05, 08 and 07 special numbers including calls to Jersey, Guernsey and Isle of Man landline and mobiles See
Free calls See

1. UK voice calls

Applies to calls made in the UK to standard UK landlines and all UK network mobiles. Minute minimum charges apply

2. Voicemail

Calls to UK voicemail are included in your bundled minutes, then 35p per minute thereafter. Except on the unlimited minute tariffs when UK voicemail is free.

3. Calls to customer services

Calls from a non-O2 mobile phone are charged at your providers' rates.

4. UK text message

Tariffs include unlimited texts. Except for the 50 and 100 minute tariffs which include 250 and 500 texts respectively - Text messages are charged at 15p per message thereafter.

5. International and roaming charges

For details, see

6. UK browsing

UK data usage only. Data used while outside of the UK is not included. Applies if a data bundle Bolt On is not chosen.

7. O2 Directory Enquiries

Calls to 118402 only. Calls to all other 118 numbers are charged at £2.04 a minute

8. Data usage abroad in the EU

For details, see

9. Data usage abroad outside the EU

For details, see