T-Mobile closes $2.9 billion spectrum swap with Grain Management
T-Mobile US, Inc. finalized its spectrum transaction with Grain Management, LLC, exchanging its 800 MHz portfolio for $2.9 billion in cash and Grain’s 600 MHz licenses. The FCC approved the deal on July 1, 2026, following an initial announcement in March 2025. TAP Advisors, Cleary Gottlieb Steen & Hamilton LLP, and DLA Piper advised on the transaction.

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T-Mobile US, Inc. has completed a major spectrum asset exchange with Grain Management, LLC, securing $2.9 billion in cash and acquiring Grain’s entire 600 MHz spectrum license portfolio. In return, T-Mobile transferred its 800 MHz spectrum holdings to Grain. The transaction strengthens T-Mobile’s low-band spectrum inventory, which is critical for wide-area 5G coverage, while providing the company with significant liquidity from the cash component of the deal.
The Federal Communications Commission (FCC) granted approval for the transaction on July 1, 2026, clearing the final regulatory hurdle for the closure. This completion follows the initial announcement of the deal on March 20, 2025, marking the end of a multi-year negotiation and regulatory review process.
Transaction Details
The structure of the deal involves a direct swap of spectrum assets alongside a substantial cash payment. T-Mobile relinquishes its 800 MHz portfolio, which typically offers good indoor penetration but less capacity for high-speed data compared to mid-band or high-band frequencies. Conversely, the acquisition of Grain’s 600 MHz licenses adds valuable low-band spectrum to T-Mobile’s network, enhancing its ability to provide reliable coverage in rural and remote areas.
| Asset Transferred | Recipient | Counter-Asset Received |
|---|---|---|
| 800 MHz Spectrum Portfolio | Grain Management | 600 MHz Spectrum Licenses |
| — | — | $2.9 billion in cash |
Advisory Support
TAP Advisors served as the financial advisor for T-Mobile during the transaction. Legal counsel was provided by Cleary Gottlieb Steen & Hamilton LLP and DLA Piper. These firms assisted in structuring the complex regulatory and financial terms required to satisfy FCC conditions and finalize the asset transfer.
What the Numbers Show
The acquisition of 600 MHz spectrum is strategically significant for T-Mobile’s network architecture. Low-band spectrum like 600 MHz travels farther and penetrates buildings more effectively than higher frequencies, making it essential for nationwide coverage consistency. By swapping out 800 MHz assets—some of which may have been legacy holdings—for newer 600 MHz licenses plus $2.9 billion in cash, T-Mobile optimizes both its spectral efficiency and its balance sheet. The cash infusion can be deployed toward network expansion, debt reduction, or shareholder returns, while the new spectrum supports the carrier’s competitive positioning in the wireless market.
How will T-Mobile allocate the $2.9 billion cash infusion between network infrastructure upgrades, debt reduction, and shareholder returns?
What impact will the enhanced 600 MHz low-band coverage have on T-Mobile's competitive standing in rural markets against Verizon and AT&T?
How might this spectrum swap influence future FCC regulatory frameworks regarding spectrum trading and asset valuation?

































