T-Mobile has officially launched its Starlink-powered "T-Satellite" service nationwide, offering off-grid text messaging and location-sharing to both customers and non-customers. The service is currently $10/month (soon to be $15), supports over 60 devices, and will expand to include voice and "satellite-optimized" apps. The Verge reports: Your device will automatically connect to T-Satellite if you're in an area with no cellular coverage. As long as there isn't a heavy amount of cloud coverage or trees blocking your view of the sky, you should be able to send and receive text messages, including to 911, as well as share a link that temporarily tracks your location. T-Mobile's support page says the ability to send pictures is available on "most" Android phones, and the company plans on adding support for more devices soon. T-Mobile is also aiming to enable voice messages and will eventually allow devices to connect to "satellite-optimized" apps, which it previously said could include AllTrails, Accuweather, and WhatsApp. The more than 650 Starlink satellites used by T-Mobile cover the continental US, Hawaii, parts of southern Alaska, and Puerto Rico. The carrier says it's working on offering satellite connectivity while abroad and in international waters as well. [...] In order to use T-Satellite, you'll need to have an unlocked device with support for eSIMs and satellite connectivity.Read more of this story at Slashdot.