O2 Customer Services Contact Number

The O2 customer services helpline can be contacted by phone: Open Monday-Friday – 8:00 AM-9:00 PM, Saturday-Sunday 9:00 AM-5:00 PM.

*Calls to 084 numbers cost 7p per minute plus your phone company’s access charge. We are not associated or affiliated with any of the companies or government agencies listed on the website, trademarks are property of their respective owners

O2 Customer Service Hours

The O2 customer services team is available to take your call Monday-Friday – 8:00 AM-9:00 PM and Saturday-Sunday 9:00 AM-5:00 PM. Holiday availability may vary.


Day Open Closed
Monday 8:00 AM 9:00 PM
Tuesday 8:00 AM 9:00 PM
Wednesday 8:00 AM 9:00 PM
Thursday 8:00 AM 9:00 PM
Friday 8:00 AM 9:00 PM
Saturday 9:00 AM 5:00 PM
Sunday 9:00 AM 5:00 PM

Tips for Contacting O2

• When you call their team, you need to make sure you have all of your account details available to pass the data protection validation, including your first name and last name, date of birth, your address and the method of payment you use to pay your bill.

• They may even ask for the amount of your last bill, so make sure you know how much you pay.

Frequently Asked Questions

Upgrading Your O2 Service?

Upgrades on the service are a bit different to the other mobile networks, as you are able to upgrade early for a fee if you subscribe to their O2 Refresh plan. This lets you get a new device whenever you like, but you may have to be a small charge.

You can check if you are due an upgrade by giving the O2 contact team a call on the telephone number at the top of the page.

You can typically upgrade to a new phone if you have finished your device plan or if you are at the end of your contract.

How Good is the O2 Network?

The network has one of the strongest networks in the UK and provides the infrastructure to operate brands such as Tesco and Giffgaff.

Giffgaff is partly owned by O2, and is a Pay as you Go provider that now offers some SIM only contracts and phones.

What is O2 “Priority”?

Formerly known as Priority Moments, O2 Priority is a reward scheme offered by  the company that lets its customers enjoy some exclusive features and rewards from the entertainment, music and restaurant industry.

They are also able to book tickets for some events happening at the O2 Arena, which the company sponsor. This can include music concerts; comedy shows or theatre productions.

About O2

It is one of the UK’s leading mobile network providers, and are currently one of the big four mobile networks operating in the United Kingdom.

As with any modern-day call centre, their staff can help you troubleshoot mobile problems, query your bill or price plan and check if you are eligible to upgrade your phone. The O2 contact number will help assist you with your question.