How your phone texts a satellite with zero bars

How your phone texts a satellite with zero bars

Zero bars and your text still goes. It goes to a satellite 1,414 km up.

Your screen shows which way to turn so the phone points at it, the message is squeezed to about a third of its size, and it climbs to the satellite and comes back down to a ground station. The signal is about half a million times fainter than a nearby tower's.

Send it to whoever hikes where the bars run out.

#satellite #iphone #howitworks #space