"Oh- of course." He holds it out, starts to explain how it works, and then cuts himself off. She knows what it is, which is more than he could say for himself the first time he saw a cellular phone. She probably doesn't need to know how to use it.

"Do you mind my asking what's wrong? I might be able to help." Him, or Thor, or Tony, or Bruce or Jane or any number of people at SHIELD. "I'm Steve, by the way. Steve Rogers."