comment: >
  
  Makes sound travel at the speed of electricity and radio waves
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  I learned this one day when my friend and I were on the phone but within yelling distance apart from each other. He yelled “Over here!” which I heard through the phone first. I was 10 and it blew my mind. >
  
  Although it moves slower than sound if you're close. 
  A friend and I were in cars next to each other and talking on the phone. I could see her mouth moving before hearing it over the phone >
  
  That’s perceiving light, not sound, man >
  
  They were next to each other so even sound would be faster if there wasn't glass between them. >
  
  Are you saying that unobstructed, sound would be faster than light? >
  
  No. I'm saying that unobstructed, sound would be faster than a phone call when you're 8 feet apart.
  phone call < sound < light, when you're 8 feet apart.
  sound < phone call < light, when you're much further apart. >
  
  You and the other caller are 8 feet apart, but your call is traveling to a cell phone tower, then to a switch, then to a cell phone tower, then back to the person you called (at the bare minimum). While you and the person you called may be 8 feet apart, the call travelled quite a long distance to get there. Since your voice and the call arrive at very close intervals, the call had to travel much faster than sound to get to the person you called as quickly as it did. >
  
  Yes, that is how phones work. But the net distance travelled is still 8 feet, so the net speed is slower. That's what we're talking about. >
  
  There’s a race between two cars. Car A starts 100miles from the end and drives the 100mph. Car B starts 1 miles away and drives 1 mph. They arrive at the same time but who moved faster? There’s no concept of net speed. There’s latency and lag within a system. >
  
  Yes, electrical signals / radio waves travel faster than sound. No one is saying otherwise.
  This is the same level of pedanticness as people replying to OP with "um, actually, telephone's don't make sound travel faster than the speed of sound, they convert the sound into a signal that travels as electricity / radio and then is converted back to sound on the other end." Like yeah, that is how phones work. That's not the point.
  OP was noting how phones transmit sound (as in the information itself) faster than the speed of sound. That is, if sound traveled from one phone to another through air, it would be slower than using the phone. And then a commenter noted how, if you're close enough, it's actually not faster to use the phone than sound going through the air between you. That is a concept of net speed.