Three could be set to follow the lead of Everything Everywhere - UK parent company of Orange and T-Mobile - by launching 4G services.
The broadband provider is to purchase some of its rival's prized 1,800MHz spectrum, which Ofcom recently ruled can be used to launch super-fast mobile services.
Under the terms of the original merger agreement between Orange and T-Mobile, the firms are required to sell off 2 x 15MHz of its spectrum in order to ensure fair competition.
And it appears Three's mobile broadband customers will be the main beneficiaries of this European Commission-imposed condition.
Speaking to TechRadar, a spokesperson for Everything Everywhere confirmed that the company has reached an agreement with Three in accordance with its commitments.
"Ofcom and the European Commission will review whether the divestment satisfies the merger commitments and a response is expected within the next three months," they noted.