O2

O2 is one of the UK’s biggest mobile networks and also one of the most reliable, winning the award for Best Network Coverage in 2020 by Uswitch. They serve approximately 26 million customers on pay monthly and SIM-only plans. You can get the latest phones and tablets on O2 with no upfront cost in many cases. Looking to switch? That’s no problem either – check out their latest deals and port your number over.

O2
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