Skylo

Skylo puts satellite messaging into ordinary phones without owning a satellite. It rents L-band capacity on geostationary satellites already in orbit, Viasat's and Ligado's, and builds the network software and certification stack that lets standard chips in phones, watches and sensors exchange messages through them. When a Pixel sends an emergency SOS with no cell coverage, or a Verizon customer texts over satellite from a dead zone, Skylo is carrying it.

Skylo began at Stanford in 2017, founded by Parthsarathi Trivedi with Andrew Nuttall and Andrew Kalman, spent three years in stealth, and first pitched cheap satellite IoT for fishing fleets and railways in India. The market showed up in consumer phones instead: Google's Pixel satellite features and Verizon's satellite texting both run on Skylo, with Vodafone and Qualcomm on the partner list.

The bet is that standards win. Get satellite support into billions of ordinary chipsets, let carriers sell the service, and skip the constellation entirely. The risk is the same bet inverted: Skylo carries narrowband messages over ageing geostationary satellites while SpaceX and AST SpaceMobile ship direct-to-cell from low orbit with a path to voice and data. The window is real, and it could close fast.