SpaceX's cellular Starlink service now supports satellite-based tweeting, but only in Japan to start. The feature is available via Japanese mobile phone company KDDI, which owns the Au cellular carrier. Like T-Mobile, KDDI offers access to the cellular Starlink system. Both carriers offer satellite-based text messaging for about $10 per month. But it looks like KDDI beat T-Mobile in offering support for Elon Musk's X. KDDI’s Au supports data transfers on 20 mobile apps, including its own email service and navigation app, Google Maps, and news apps. In a video demo, a phone uses the navigation app while driving in a cellular dead zone. In another, the phone posts a tweet in seconds. #cellularstarlink #cellularsatellite #starlink #technews #kddi 📸: Au/KDDI Like what you're reading? Don't miss out on our latest stories. Add PCMag as a preferred source on Google. 🏅