O2 has started rolling out a complimentary 5G+ network upgrade to all Pay Monthly customers, but you'll need a compatible ...

Good news for all the O2 customers out there who have been trying to get their hands on a new Micro SIM card for the iPhone 4, as we have just checked with a number of O2 stores throughout the UK and ...

We have been trying to find out information on how people who have pre-ordered the iPhone 4 from Apple, will get a new Micro SIM card from the five mobile operators in the UK. We have written a guide ...

Following a tariff overhaul by T-Mobile last month, O2 is the latest network to revamp its monthly contracts. The original home of the iPhone is launching a new SIM-only tariff and updating its ...

If you have an O2 SIM card tucked inside your phone, you're about to get a major 5G upgrade. Virgin Media O2 has flipped the switch on its next-generation 5G network, unleashing faster speeds and ...

A SIM card, or subscriber identity module, is a small card in your cellphone that connects you to the network. Your SIM card contains your phone number, and lets you make phone calls, send text ...