I'd expect a response along the lines of this if I presented a factory-erased phone to CBP... "Everyone has a Facebook sir, even my grandma and my boss. And I'

I'd expect a response along the lines of this if I presented a factory-erased phone to CBP... "Everyone has a Facebook sir, even my grandma and my boss. And I'm pressing buttons on your cellphone and it's asking me to set things up, so it's obvious you wiped it and have something to hide. We can do this the easy way or the hard way. Either you start being honest with me, or you're not catching that flight, or any flight. Ever."