Zzzap can see, interact with, and communicate through electromagnetic energy

A fun little trick the magazines and television shows never figured out. I can see all the electromagnetic energy in the air, including radio waves, television broadcasts, and satellite transmissions. I knew there were seventeen GPS devices within three blocks of me, and I could tell you the codes for each one. And if I had to, with a little concentration, I could duplicate them or override them.
Which is why it had been second nature to see the cell phone built into Stealth’s cowl and memorize the number. Focus on that and I could feel the signal a phone would translate into an audible ring.
“Who is this?”
“It’s me, Zzzap.”
“You do not sound like him.”
“I’m transmitting to your phone. You’re hearing my voice as I hear it, not how you do.”

Excerpt From Ex-Heroes, pg 124-125
Peter Clines
https://books.apple.com/us/book/ex-heroes/id585738407