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O2 Mobile offer

Version History
Last update:
‎29-06-2021 11:56 AM
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Here at TalkTalk, we’re always listening to your feedback and working hard to bring you the value and service you want. So we've improved and streamlined our mobile phone offers.

TalkTalk customers now benefit from a special discount on O2's powerful 4G network. With O2 you'll also be able to enjoy lots of perks and surprises that come with O2's Priority app and will have access to over 15,000 free O2 Wi-Fi hotspots.


You’re bound to have questions about these new O2 offers, so here are some FAQs that we hope will answer them. 

TalkTalk have teamed up with O2 to put together special mobile deals for existing TalkTalk Mobile customers. As a customer we'll give you great offers to join O2 with all the benefits of an award winning network as well as perks and offers through the Priority app.


Your broadband contract won't be affected if you move to O2 for your mobile service. You’ll continue to enjoy all of the benefits of being a broadband customer with TalkTalk.


You can check 2G, 3G and 4G network coverage using the O2 coverage checker.


If you're already a TalkTalk Mobile customer you can transfer your mobile service to O2. Please contact us to discuss the latest O2 offers and place an order. 


Yes, it's easy to keep your number. 

  • When you contact us we'll give you a PAC (Porting Authorisation Code) during the call. Then we’ll pass you over to O2 so you can choose an offer and set up a new account with them. Once you've received your O2 order, simply complete the online form to transfer your number to O2. For information on this process, please visit the O2 Help & Support website.  
    If you've already joined O2 and just require a PAC, please see Cancel your TalkTalk Mobile service where we can give you a PAC without the need to call.
  • If you're already an O2 Pay Monthly customer and want to move your number to your new Pay Monthly SIM, get in touch once your SIM arrives. Just call 202 from your O2 mobile or 0344 809 0202 from any other phone.
    If you want an additional line you can still get these deals by adding a new connection to your account.
  • If you're moving from another network, simply fill in the keep my number form once your new SIMs arrived. Find out more at How to keep your mobile number

PAC stands for Porting Authorisation Code. You need it to transfer your current phone number to a new network. The PAC is only valid for one month and your new provider must make the transfer request before the expiry date.

When we give you your PAC, you don’t immediately stop being a TalkTalk Mobile customer. You’ll be with us right up to the day you switch to your new provider, at which point we’ll send you a final bill.
If you do use your PAC, you’ll get your final bill as normal, which will include any charges for usage outside your free plan. Any subsequent bill will confirm any remaining credits or balance owed.

For information on switching to O2, please visit the O2 Help & Support website.

Your new provider should be able to tell you what day the number transfer is due to take place. It’s usually within 48 hours after you have given them your PAC.


SIMs come in three different sizes - standard, micro and nano. The SIMs O2 send have perforated edges so you can just pop out the size you need.  


Yes you can. You'll be asked to set up your preferred spend cap when you're joining online. Check out more information on O2 Spend Cap


If you're a SIM plan customer using your existing mobile, there's a small chance that your phone could be locked to the Vodafone network. Please visit Unlock my phone from Vodafone for more information. Or talk to us about upgrading to a new O2 phone.


Find out how to change your TalkTalk preferences, and if you've already joined O2 you can change your marketing preferences in My O2


If you sign up to an O2 product you’ll be entering a separate agreement with O2, and you will be billed through them directly.



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