Under the agreement, Dixons Carphone will also offer mobile connections to customers buying connected devices, such as laptops, tablets and home appliances.
The move is part of Dixons’ strategy targeting the Internet of Things (IoT) – one of the key factors behind the Dixons-Carphone Warehouse £3.8 billion merger last year.
Lynda Burton, director of wholesale at Three, said: “This is our biggest new customer to date and a great opportunity to be the MVNO partner of a large scale brand with real mobile expertise and insight. Our network capability, recognised as best for smartphone customer satisfaction and reliability, is a great platform and we look forward to supporting the UK’s biggest mobile specialist’s MVNO success.”
Dixons Carphone’s announcement comes less than a week after Sky said it was going to launch an MVNO service in 2016.