[cdigitaldetroit]

It sounds as if it didn't charge properly. When you plugged it in were you using the computers usb to charge, or were you using the actual charger? Which ever method you used, try using the other. Also try with both batteries. Keep in mind, it may take a while for the red light to change back to amber. You won't be able to use the phone while it has a red light either. Even if it's plugged in.

If this doesn't help, sign into my sprint, on sprints website, and add insurance. Wait a couple of days, and make a claim.