The firm started 2014 with 2 million 4G customers and claims to have added more 4G subscribers in the year than any other operator in Europe.
More than 80% of the UK population can now access its high speed network, and EE says its on course to increase that figure to 98% by the end of 2015.
Towns which have recently become 4G-enabled include Hastings, Worthing, Worcester, Scunthorpe, Crewe, Rugby, Bognor Regis, Stratford-Upon-Avon, Bangor and Llandudno.
Last month EE’s shareholders Deutsche Telekom and Orange entered exclusive talks with BT sell the network to the former state-owned ISP.
The £12bn deal would turn BT into the UK’s first nationwide quad play provider, allowing it to offer customers bundles deals on home phone, broadband, TV and mobile services.