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O2 is stopping its pay-as-you-go data SIMs for existing customers in a matter of days. These SIMs are usually used in tablets or any device where you don't need to make calls and texts. The PAYG ...
Yesterday was not a good day for users of the second biggest mobile network operator in the United Kingdom, Telefonica U.K. which is better known as O2, as its customers lost access to the 4G network.