Mobile phone company EE has announced plans to double the speed and capacity of its 4G network.
The network speed is expected to rise from between 8Mbps and 12Mbps to more than 20 Mbps.
The improved speed will mean users can use the internet at a much faster rate.
The new 4G capability is due to come into force in London and nine other UK cities over the next few months.
The company says trials in Cardiff have already seen speeds reach over 80Mbps.
The improved speed will be available automatically to 4GEE customers on smartphones, tablets and dongles.