What Does it mean when it says depart USPS sort facility?

My iphone had to be ordered and I have been tracking it. And it gave me " Depart USPS Sort facility" Dow that mean I
Should be getting it today or No?

Before you get it the notation usually says in transit, then sometimes out for delivery. Departing their sort facility means they finally got it on a truck to your area.

Nope, it means that your package is on it's journey. Now there should be a "expected delivery" date showing up shortly.