Recently flew Southwest. While waiting for the plane to arrive I asked a pilot that was waiting also what the hump on the fuselage was.
I suspected it was WiFi and he confirmed it.
Must be really involved, aside from the electronics there’s pressurization problems to contend with also.
IIRC there was a charge to connect. $10 ?
SHHHHHH..quiet!!.Actually, given the terrorist threats against planes (all those missing “man pads” SAMs...it’s actually a turret for a laser guided anti-missile weapon..