[Robotbeat]

How? Because both the satellites and the receivers will use large phased array (beam forming) antennas with hundreds to thousands of elements unlike LTE. No one will have deployed phased arrays to users at the scale of this constellation, therefore SpaceX has invested a lot in phased-array/beamforming technology.

“Another one of Elon Musk’s garbage projects that doesn’t really advance the state-of-the-art.”

Okay, so you’re just trolling, then. Never mind.

[mozumder]

OK but now you've limited your applications to non-mobile devices, unlike LTE.

And if they're targeting this for cellular base-stations, they're now on the hook to provide an even larger aggregate bandwidth to share among hundreds or thousands of local users per tower.

[Robotbeat]

Correct, the entire point of SpaceX's constellation is non-mobile. Always has been.