O2 customer care department is open Monday to Friday 8:00am - 9.00pm and Saturday to Sunday 9:00am – 5:00pm.

What is the best customer service number for O2?

*This website advises that calls to 084 numbers cost 7p/min plus your phone provider’s access charge.

Speaking to an O2 customer service agent on the phone is made easier if you follow our tips at the end of this article. Almost every existing O2 customer will need to speak to a customer service representative at one point or another during the length of their O2 contract and whilst this can be a time consuming task, especially during peak hours, it is the best and fastest way to get any problems you are having with your service attended to and resolved quickly.

The reasons as to why you would need to contact O2 customer services by phone are endless. Perhaps you have been the victim of a crime and you have to report your phone stolen, or you have moved to a different city or bank and therefore need to update your contact or payment information. Regardless of how major or minor your issue is, there will always be a customer service agent available to help you at any time of day or night.

Why contact O2 customer service?

You can call O2 contact number from any phone. The service is available 7 days a week, every day of the year and the average wait time to speak to an agent is approximately 7-10 minutes.

The primary reasons for needing to phone the O2 customer service number are as follows:

● Questions about the service or contract
● Cancelling your O2 service
● Upgrade eligibility
● Modifications or changes to phone number
● Reporting network failure
● Data issues
● Theft or loss of mobile device
● Billing errors
● Changing or updating account details

About O2

O2 is the commercial brand owned by Telefonica UK. It is one of the leaders in digital communications with recent Ofcom statistics revealing it holds the highest satisfaction rate amongst clients with regards to customer service. O2 has in excess of 23 million customers in the UK and it also owns 50% of Tesco mobile.

O2 helpline takes customer service and satisfaction very seriously. Not only do they have excellently trained live agents to take your call and guide you through the resolution steps to your issues, they have also developed an app for smartphone users. Their wait time when you are placed on hold to speak with a customer service agent is minimal, regardless of the time of day.

Helpful tips for calling the O2 Number

● Making calls to the O2 support contact number will always be quicker during off peak hours.
● Be sure to have all of your account and personal details nearby, so that you will be able to receive the help and support you need quicker.


Question: Can I keep my previous phone number if I move to O2?

Yes! If you would like to move to O2 from another network, there is a way to keep your phone number. Before you make the move to O2, it's likely that you'll need to request a PAC number from your current mobile network provider. Then, you may need to fill in O2's ‘Keep My Number' form online. After you fill in the form, O2 should provide further instructions on how to transfer your mobile phone number to them.
If you are already an O2 customer but you would like to switch from Pay As You Go or Pay Monthly, it's also possible to keep your number. All you should need to do is fill in the online form and O2 will attempt to transfer your number as quickly as possible.

Question: What should I do if my O2 device has been lost or stolen?

Contact the O2 team as soon as possible to report your device as lost or stolen. You should be able to request the device to be blocked as well as a new sim card with your old number. For those who purchased insurance for their device, an O2 representative should also be able to advise if and how you are covered, and with making a claim.

Question: Is it possible to use my O2 service abroad?

Yes! O2 users can potentially use services, such as texting, phone calls and internet, in up to 65 countries around the world. The usage rates vary depending on which region you are travelling to and what kind of phone contract you have. For example, Pay Monthly users often pay a daily rate while abroad for a certain allowance of usage, whereas Pay As You Go customers usually pay O2's standard roaming rates. To find out more, look up O2 Travel on the O2 website or on your online account.

Question: Is it possible to unlock an O2 device?

Yes! Pay Monthly customers can usually unlock their device at any time but they may still be tied to paying until the end of their contract. Pay As You Go customers often cannot unlock their phone until they have owned it for at least one year. You may also need to pay a charge for having your phone unlocked. When you are ready, go to the My O2 App or sign in to your My O2 online account and request to unlock your device.

Question: Why is my O2 bill is higher than expected?

There are a few reasons your O2 bill could cost more than usual. If you have used your phone abroad, you may have been charged higher ‘roaming' rates. Your bill could also be more expensive due to calling high rate numbers or buying services using your mobile balance. The most likely reason your bill is higher than expected is that you went over your text, call or internet allowance of your tariff. If you would like to find out the specific reasons for charges, sign in to your online account to check your bill or call the O2 phone number to reach their customer service team.

Question: What's the best way to save using my O2 data?

There are a few different tips that O2 give their customers to help save data. Firstly, avoid downloading things that use large amounts of data, such as TV shows, films and even large email attachments. Secondly, try to use free WiFi rather than your phone's data where possible. If you are an O2 customer, you'll be pleased to know that O2 provides many free WiFi hotspots all around the UK. Thirdly, keep track of how much data you use on the My O2 App or by signing into your online O2 account.

Question: Will O2 repair my damaged phone?

Maybe. If you have bought an O2 device in-store, you may be able to organise repairs where you made your original purchase. If you bought your O2 product online, you should look into the online returns service on O2's website. Depending on what insurance, warranty and device model you own, you may be charged for some services but an representative at the O2 telephone number should make these costs clear before making any chargeable repairs.

Question: I've changed my mind about my O2 device - what next?

If you recently bought an O2 device but are not sure if you want it any more, contact O2 as soon as possible. Depending on the circumstances and the amount of time since the purchase, it may be possible to organise a refund or exchange.

Question: Is it possible to activate my own O2 sim card?

Pay Monthly customers shouldn't need to activate their own sim as it should have been set up before you received it. Pay As You Go customers should only need to top up their new sim and make a billable call to activate the sim. If you have received a new O2 sim card due to needing a different sized sim for a new device, you can attempt to activate it on the ‘Swap My Sim' page online. If you have any problems activating your own sim, get in contact with an O2 representative for assistance.

Have a better contact number for O2?