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All calls to this number cost 7 pence per minute, plus your telephone providers access charge. Please note we are not associated with any of the companies listed on this website. This is a call connection service.

Opening Times for o2

Day Opens Closes
Monday 8am 9pm
Tuesday 8am 9pm
Wednesday 8am 9pm
Thursday 8am 9pm
Friday 8am 9pm
Saturday 8am 8pm
Sunday 8am 6pm
O2 Correspondence Team PO BOX 694
SO23 5AP

0843 557 3690

Get in touch with the o2 customer service number on the contact 0843 557 3690 where they can help with queries you have about orders, upgrades, changing your tariff, your bill and more. Find the relevant department you’ll need to contact below.

o2 Contact Numbers

Expedia Number
Customer services 0843 557 3690
Orders 0843 557 4967
Upgrades and change tariff 0843 557 3365
Bills 0843 557 4524
Using your phone abroad 0843 557 3647
Refunds and returns 0843 557 3744
Broadband 0843 658 0834
Technical issues 0844 453 0127
Complaints 0844 826 8016

Customer services

Phone the number 0843 557 3690 to get in touch with the customer service team at o2. You can call this number to find out about the latest mobile devices and offers they have available.

You can also ring this number for further information about their o2 Recycle scheme, or get help with using the o2 Perks. If you can’t use any of these perks, then get in touch and they’ll be able to help ensure that they’re working properly.


Track orders you’ve placed with o2 by calling the number 0843 557 4967. If you provide them with your order number or details they’ll be able to tell you the current status of your order, and when it’s likely to arrive.

If you need to make changes to an order you have placed you can also use this number above to get in touch.

Upgrades and change tariff

Use the number 0843 557 3365 to discuss upgrades and changing your tariff with o2. When you call this number they’ll be able to let you know whether you’re due for an upgrade, or when it is. If you are able to upgrade your phone, they’ll let you know about the best deals available to you, as well as asking what type of phone you’re looking for, the price you’re willing to pay and how much data you need with it.

To discuss changing your tariff, or switching to a sim-only plan you can also ring the number above to find out the options available to you.


Need help understanding your bill? You can phone the number 0843 557 4524 to get in touch with o2 regarding this. When you call this number you can find out what certain charges are attributed to. If you think you’ve been overcharged on your bill you can dispute this when you call this number and see if there’s any way of getting your bill lowered.

You can phone this number above to discuss the direct debit payment of your bill, whether it’s to set it up or request to change the date that the direct debit comes out of the account.

Using your phone abroad

Call the number 0843 557 3647 to get in touch with o2 regarding using your mobile phone abroad. When you call this number the advisor will be able to talk you through the steps you need to take to be able to use your phone whilst you’re on holiday. They can also tell you about the bundles that can be bought for when you’re travelling to give you access to date, minutes and messages without extortionate cost to you.

Refunds and returns

Get further details about the refunds and returns policy offered by o2 when you call the number 0843 557 3744. If you have previously purchased an item and would like to find out if you can return the item for a refund or get it exchanged you can call this number, explain your issue and see what they can do to help you.

If your item is faulty you can also ring the number above and they’ll be able to tell you what can happen in this situation, it might be that your phone needs to be sent away to get fixed by o2.


Use the number 0843 658 0834 to discuss home broadband with o2. You can phone this number to find out about coverage in your area, and the speeds that you’re likely to get from the company with the broadband options.

Technical issues

Call the number 0844 453 0127 to speak to o2 regarding any technical issues you might be having. You can phone this number if you need help with your sim, or if your phone is blocked or you need assistance with your PUK code. You can also call this number for technical issues you might be having about calls on your phone or the data coverage on it too. If you have any issues with your broadband or mobile broadband you can also ring the number above.


To make a complaint to o2 you can phone the number 0844 826 8016.  They aim to get your complaint resolved whilst you’re on the line with them, however, if you’re not satisfied with what they’re doing you can ask for a manager. The majority of complaints will be resolved at this stage, however, more complex ones may take a little longer and need a little further investigating. If you’re not happy with how your complaint is progressing you can ask the advisors if you can speak to their Complaint Review Service.

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