December opened with a switching war and a spectrum blockbuster. T-Mobile rolled out its AI-powered Easy Switch tool on December 1, letting AT&T and Verizon customers log into their carrier accounts through T-Life and see exactly what switching would save them, and by December 4 AT&T had sued, accusing T-Mobile of illegally scraping its servers. On December 4 the GSMA published its eSIM Compliance Report 2025, the industry's most complete snapshot of certified eUICC products, devices, and platforms across consumer and IoT. And on December 5, the FCC's Wireless and Space Bureaus accepted SpaceX's application for filing to operate a new satellite system delivering supplemental coverage from space over EchoStar's AWS-4 and H Block spectrum, formally starting the clock on one of the biggest spectrum transfers in US history.
The month closed with a regulator racing the clock. On September 30, hours before federal funding lapsed, the FCC held its September open meeting, adopting a Notice of Inquiry on accelerating wireline infrastructure buildout and continuing its rule-deletion campaign. The same day the Commission formally accepted the SpaceX and EchoStar spectrum assignment applications for filing, starting the public comment clock on the 17 billion dollar transfer. And on October 1, as the government shut down, T-Mobile launched satellite data on T-Satellite, bringing app connectivity from space to dozens of phone models and moving direct-to-cell beyond messaging for the mass market.
The tariff other shoe dropped, and SpaceX turned up the spectrum pressure. On April 14 the administration launched a Section 232 national security investigation into semiconductor and electronics imports, confirming that last week's smartphone exemption was a bridge to sector-specific tariffs rather than a reprieve. SpaceX chose the same day to escalate at the FCC, filing new data it said proved EchoStar barely uses its AWS-4 spectrum and renewing its demand for a sharing proceeding in the 2 GHz band. And the FCC teed up its April 28 open meeting with an agenda heavy on satellite modernization, previewing rules to streamline licensing and expand spectrum flexibility for the booming space economy.