EE added another 20,000 fixed broadband subscribers during the first three months of the year, marking the continuation of a positive trend.
The broadband provider increased its fixed-line customer base to 745,000, as the rate of growth increased during Q1 2014.
During the final three months of 2013, EE added 12,000 fixed-line broadband subscribers.
The company also increased its mobile broadband customer base during Q1 2014, adding another 899,000 4G customers.
This took the service provider's total from 2.0 million to 2.9 million.
EE has continued to extend the reach of its super-fast mobile broadband network in recent months, launching 4G services in a host of new locations.
Last week it was announced that the seaside resort of Rhyl, in North Wales, had become the 200th town in the UK to be added to the firm's next-generation network.
Neal Milsom, Chief Financial Officer at EE, said the company is delivering a "strong, consistent commercial performance".
"[We] continue to successfully create value through our award-winning network," he stated.
"We signed up nearly 900,000 4G customers in a single quarter, with over one in four new customers opting for EE’s exclusive double speed 4GEE Extra plans."
Mr Milsom said that, in line with EE's vision to provide the best network and best service, the company is also improving customer service across all channels.
The firm recently announced plans to open a new UK customer service centre in Londonderry/Derry in Northern Ireland in spring 2014.
EE is aiming to bring 1,000 customer service roles back to the UK from overseas call centres, in a bid to boost satisfaction rates.