This weekend’s scheduled Blue Origin rocket launch is rather momentous. Success would signal an end to SpaceX’s monopoly on reusable orbital launch vehicles, and set up a three-way race to make that “No Service” indicator on your phone disappear forever.

On Sunday morning, Jeff Bezos’ massive New Glenn rocket is scheduled to launch with the first-stage booster that launched and landed on the program’s second mission last November. It’s a critical test, because cost-effective booster reuse is what’s made SpaceX’s Falcon 9 so dominate.

Amazon desperately needs a reusable rocket of its own to accelerate its Leo launches. Without one, it’s only been able to launch 241 Leo satellites, putting it well behind schedule. In that same 12-month time period, SpaceX’s Falcon 9 rocket was able to deploy over 1,500 satellites to its Starlink constellation.

Sunday’s mission will carry AST SpaceMobile’s BlueBird 7 satellite to low Earth orbit. Instead of blanketing the region with thousands of small satellites like Amazon and SpaceX, AST’s plan is to deploy fewer satellites that are much more powerful. Bluebird 7 features a massive 2,400-square-foot phased-array antenna, making it the largest commercial communications array ever deployed in low Earth orbit. It’s essentially a cell tower in space, and will be the second of the company’s “Block 2” next-generation satellites to launch.

The BlueBird 7 is designed to provide 4G and 5G broadband, at speeds exceeding 120 Mbps, to the phones we already carry. AST plans to have 45 to 60 satellites launched by the end of 2026. When AST lights up its service sometime this year, it will be in direct competition with Starlink’s direct-to-cell service, already operating with T-Mobile in the US, and Globalstar, the satellite network snapped up by Amazon that keeps iPhones and Apple Watches communicating in dead zones.