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O2 is the commercial brand of Telefónica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. With over 23 million customers, O2 runs 2G, 3G and 4G networks across the UK, as well as operating O2 Wifi and owning half of Tesco Mobile. Manufacturers include Samsung, Sony, Nokia, iPhone, HTC, LG and Amazon. Shop the latest products and services here.

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offer ends 31/12/20

while stock lasts

Free o2 Guru Service

Offering tech support, tutorials, coaching, community events, digital advice, data transfers to any network and any company. A Permanent offer from o2 to you!

offer ends 31/05/19

while stock lasts

offer ends 05/06/19

while stock lasts

Get 4GB of extra data for 12 months when you buy 18GB for £20 SIMO tariff

2553 O2 Sim Only Unlimited 12M 18GB GBP20 S3. Get 22GB for £20. Includes additional 4GB of data for 12 months only, after 18GB data only. Includes O2 Travel Inclusive Zone until you change tariff, leave or upgrade.

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