The 4G network, will offer internet five times faster than 3G, and will be available to EE customers with Apple iPhones or smart phone devices from HTC, Samsung, Nokia and Huawei.
Today's launch comes amid criticism of EE's 4G pricing plans, which will hit customers on with additional charges if they exceed download allowances. Long queues are expected at shops across the country as consumers rush to sign up to the new service and get their hands on a 4G device.
More top news
Men who have been forced by women to have sex against their will are being urged to take part in a new study into the "hidden crime".
Dr Hadiza Bawa-Garba has lost a Court of Appeal challenge against negligence manslaughter conviction over six-year-old Jack Adcock's death.
Brexiteers are crowing "victory at last" over yesterday's overwhelming vote by MPs in favour of triggering Article 50 by the end of March.