O2 is the latest mobile provider to confirm the roll-out of 4G services.
The company plans to switch on a 4G mobile network in three cities - London, Leeds and Bradford - on August 29.
The move would give up to five million people access to music and film downloads at speeds up to five times faster than 3G, O2 said.
It expects a total of 13 cities to be connected by the year's end.
The switch-on follows rival EE, which launched its own 4G services last October after overhauling its network.
