The 4G network will go live in Nottingham today as part of a nationwide rollout which began in October.
4G will offer speed five times faster than 3G.
Experts say the network will have a significant impact on businesses and consumers in Nottingham thanks to the increase in speed.
The 4G network goes live in 11 cities across the country today, including Birmingham.
EE (Everything Everywhere) is the first UK provider to give customers access to the network.
By Christmas, 16 cities will benefit from the fast connection covering 20 million people.