Quarter after four. Maybe he's texting on his phone and figures we'll understand from the context* so he doesn't have to shift from alpha to symbols on his keyboard.
*something I've been (rightly) accused of not being able to do, and hell, I understood it.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw