BT customers will have to re-sign to the network to get access to the service.
BT Business, a unit of BT Group has launched 4G mobile plans and unlimited BT Wi-Fi access to small and medium-sized business customers, at no extra cost.
The plan is especially designed for SME customers who can take benefit of cloud services to avail fast, secure and uninterrupted access to company applications and programmes.
The new service will allow users to easily view large emails, files, presentations and stream HD videos on the go.
The service will run on BT Business national mobile service which is enabled by the MVNO agreement that the company signed with EE earlier this year.
However, the data, text and calling plans are made to meet the needs of businesses, but BT customers will have to re-sign to get access to the new service.
By downloading the BT Wi-Fi app customers will also be able to access the free BT hotspots across UK.
BT Business CEO Graham Sutherland said: "Our research shows that 24% of employees now work regularly out of the office.
"As part of our strategy to offer a portfolio that provides value for money and meets the changing needs of businesses, we've designed our new mobile plans to cater for this."
"Our new plans give customers the connectivity they need to help them stay productive when out and about, along with the flexibility to choose a plan that suits their way of working."
Customers also have options to choose from various plans like: data only plan, mobile fixed plan, and SIM only plan along with 30-day roaming.