The carrier has been a major supplier to T-Mo, providing it with nearly 40 percent of the wireless carrier’s revenue since 2012.
That deal is scheduled to expire at the end of 2019, but it has been delayed to give the carriers a chance to negotiate a new deal.
The new contract, if approved, would be the fourth contract for T-MO and the second with Sprint.
T-mo has said it is interested in renegotiating the contract with Sprint and other wireless carriers.
Tmo had previously indicated it would not consider the deal if the deal expired.
The deal with Sprint was the most lucrative of the three.
The wireless giant has paid T-Mobiles $4.6 billion for services since 2011, including $1.5 billion for a new 5G network in 2021 and $2.1 billion for the 5G upgrade it rolled out in 2019.
Sprint is the carrier that T-Tel sold to TMO.
TMO said last week it would be negotiating a new contract with the Sprint deal.
It was not immediately clear what T-mobiles proposal was more lucrative.
The deal with T-Mob could provide T-TMs advantage in a market that has struggled to expand beyond its core business.
TSM is a mobile phone and wireless provider that operates in the United States, Canada, Australia, New Zealand and Hong Kong.
The company recently expanded to other markets, but the carriers deal with the carrier has led to speculation that TSM might seek to enter the U.S. market.
T-Mob’s deal with Comcast has a $3 billion price tag.
That is less than T-mob’s $4 billion contract with Comcast for wireless services.
In a statement, T-tel said the two carriers have agreed to explore alternatives for the remainder of the current agreement, which expires at the beginning of 2019.
“T-Tel and T-Nation continue to be committed to working with TMO to develop a new wireless business model that is more competitive and aligned with our business objectives and customers’ desires,” the company said in a statement.