O2 Does BT have a large customer base?

It's huge. There are more than 400 physical stores in Britain with more than 23 million users, with a large base. Telecom operator O2 officially launched the 5G network service this Saturday. It became the third company to provide 5G network services after Deutsche Telekom and Vodafone. The 5G network covers 150 locations in five largest cities in Germany.