I don't fly internationally much, but everywhere I've been in the US, my phone never leaves my hand. I place it on scanners at security/the gate. In any case,

I don't fly internationally much, but everywhere I've been in the US, my phone never leaves my hand. I place it on scanners at security/the gate. In any case, as the other person mentioned, my phone is locked the whole time. The only thing in the wallet they can access is my boarding pass.