More than 50,000 BT customers signed up for the firm's mobile tariffs in the first six weeks on sale, it has been revealed.
Subscribers embraced the BT Mobile service, which launched in March 2015, in order to bundle minutes, texts and 4G mobile data with their home broadband, landline and TV.
BT introduced three SIM-only deals, giving consumers the chance to upgrade to quad-play broadband bundles.
"Our plans offer a combination of 4G on the UK’s biggest network, unlimited access to the most extensive Wi-Fi coverage via more than five million BT Wi-Fi hotspots, free BT Sport on the BT Sport App and family-friendly features like spending caps on all tariffs," the broadband provider stated.
They are available from £5 per month for existing BT subscribers.
BT's planned £12.5 billion acquisition of EE - which the firm hopes will be approved by competition regulators later in 2015 - will increase its range of 4G package options.
But in the meantime, existing customers can take advantage of super-fast mobile services through its own-branded bring-your-own-phone packages.