The phone will not work properly before a SIM card is in it. That's because the SIM reads time zone, location, and other important data from the SIM's cellular settings.
Filmed live in Austin, here's Ethan with a guide on how to insert a SIM card into your Slim device!
Also filmed live in Austin, here's Ethan again with a guide on how to insert a SIM card into your Rugged device! (It's not broken, just click somewhere and it'll play!)