EE has chosen Nokia Solutions and Networks (NSN) to assist with the rollout of 4G mobile broadband around the UK.
NSN has been selected over EE's existing partner Huawei as EE aims to bring 4G services to the "next 25 per cent of the UK population".
EE already uses NSN base stations as part of its existing 2G and 3G infrastructures.
Olaf Swantee, Chief Executive Officer at EE, said that, having pioneered 4G in the UK, the firm is now working with NSN on the next stage of its rollout.
This will include small towns across rural areas across the UK, he noted.
"This partnership highlights our approach to maintaining a differentiated 4G network experience," Mr Swantee added.
"We will continue to lead our UK competitors in speed, coverage, and reliability."
He explained that EE selected NSN because of its technology, people, and ability to provide "a high quality end-to-end services model".
"We look forward to working together as we continue to give people across the UK access to the biggest and fastest 4G mobile network," Mr Swantee stated.
Rajeev Suri, Chief Executive Officer at NSN, said EE would benefit from its "significant experience" in spectrum efficiency research.
This will help refarm current 2G spectrum for 4G, in a bid to improve connectivity around the UK, he noted.
Earlier this month, EE launched 4G services in another 14 locations - Belper, Cannock, Ellesmere Port, Grangemouth, Harrogate, Hartlepool, Keighley, Motherwell, Paignton, Richmond (North Yorkshire), Skelmersdale, Torquay and Widnes.
This means EE's super-fast mobile broadband services are now available in 174 towns and cities across the UK.