This one's super basic, but we've had enough people ask, so here's how to install the SIM card on the Nexus 4.
With the phone's display facing you in your hand, look on the left-and side. (If you see "Nexus", you're looking at the back, and so the SIM card tray will be on the right.) Look just below the volume rocker, and you'll see a little pinhole next to the SIM card tray.
In your Nexus 4 box there's a little metal SIM card tray ejector tool thingy. Kinda looks like a circle with a little pin sticking out of it. Press is straight into that pinhole, and the SIM card tray will pop out.
There's only one right way to insert the SIM card into the tray. Look for the notched corner, and make sure it matches up with the notch in the tray. The slide the tray back into the phone. (The printed side of the card faces the same direction as the front of the phone; the gold contacts face the rear.
You'll need to reboot once you've got the SIM card installed. But after that, you're golden.
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