O2 Customer Services

0800 977 7337

Monday to Friday, 8am to 9pm
Saturday, 8am to 8pm
Sunday, 8am to 6pm

About O2

O2 is a telecommunications services provider in the United Kingdom, owned by the Spanish multinational Telefonica, and is headquartered in Slough. With 25.3 million subscribers (as of September 2017) O2 is the second-largest mobile network operator in the United Kingdom after EE, with Vodafone in third place.

What is the best way to contact O2?

You can contact O2 in a variety of ways including by telephone, social media and post. We feel that O2 make it difficult to find their customer service telephone number on their website, but that telephoning O2 on 0800 977 7337 is usually the quickest way to resolve your query. O2 have a very helpful section of their website relating to common queries which is worth checking first. Social media is becoming a more widely used way of contacting customer services, however we find that the response times can be slow and therefore it can take longer resolve your query.

When is the best time to contact O2?

O2 customer service is open from Monday to Friday, 8am to 9pm, Saturday, 8am to 8pm and Sunday, 8am to 6pm. Our research shows that the best time to contact O2 by telephone is on a Sunday because this is the day with the lowest call volume. The busiest day for O2 customer service is Tuesday, so it might be best to avoid that day if your query is not urgent. Our figures show the average call duration to O2 is 8.23 minutes.

Why would I need to contact O2?

Common reasons to contact O2 include queries regarding phones, devices, accounts, bills, keeping your number, managing your account, using your phone abroad, getting started and activating your sim.

How do I make a complaint to O2?

The best way to make a complaint to O2 is directly by telephone on 0800 977 7337. If you feel that your complaint is not dealt with adequately then we recommend writing a letter and sending it by recorded delivery. If the complaint is still not resolved, we recommend contacting the appropriate Ombudsman Service.

How much do calls cost to O2?

Calls to 0800 and 0808 numbers are free and calls to 01/02/03 numbers are charged at your phone company's standard rate.

O2 Customer Services

0800 977 7337

Calls to 0800 and 0808 numbers are free and calls to 01/02/03 numbers are charged at your phone company's standard rate.

Opening Hours

Monday to Friday, 8am to 9pm
Saturday, 8am to 8pm
Sunday, 8am to 6pm

Other Contacts

www.o2.co.uk
www.facebook.com/o2uk
twitter.com/o2
O2 Correspondence Team, PO BOX 694, Winchester, SO23 5AP

Call Volumes and Average Duration

Lowest volume: Sunday
Highest volume: Tuesday
Average call duration: 8.23 minutes

Call chart