O2 is one of the UK’s longest established mobile networks. They currently offer 3G & 4G tariffs with O2 Refresh upgrades and Priority Moments access.

O2O2 is one of the oldest mobile networks here in the UK. They originally launched as Cellnet in 1985 and have been using the O2 brand since 2001. During their 31 years of operation, O2 has grown to become the UK’s 2nd largest network. They currently have 25 million subscribers and offer 98% population coverage across the UK.

Unique tariff offerings include the Refresh Pay Monthly contract. This gives greater flexibility compared to normal contracts on when you can upgrade your handset (the airtime plan has been separated from the handset repayment plan). O2 customers also benefit from exclusive access to entertainment tickets up to 48 hours before general release (O2 Priority Moments). In this section, you can learn more about O2’s tariff offerings.

O2 Coverage Review: 4G Coverage Checker & Map, 5G In 2019

O2 offers 99% population coverage on 2G, 3G & 4G, with the launch of O2's 5G coverage scheduled for October 2019.

O2 Big Bundles: Pay As You Go Bundles from £5/month

O2 offers Big Bundles on Pay As You Go with unlimited calls & texts from £5/month. An allowance of 4G data is available from £10/month.

O2 Classic Pay As You Go Review: 3p/min, 2p/txt, 1p/MB with 4G Priority

O2's Classic Pay As You Go tariff charged 3p/minute, 2p/text and 1p/MB. Customers get 4G coverage and access to O2 Priority.

O2 Unlimited Data Plans Review: Limitless Data With 4G Coverage

Unlimited data is now available on O2, starting from £33/month. Find out about O2's "limitless data" deals and the fair usage limits.

O2 Travel International Roaming Review: Countries, Speeds & Fair Usage

On O2, you can use your mobile phone abroad at no extra cost in up to 75 destinations, depending on your price plan.

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