UPDATE: Sent the case back with documentation from Sprint Store tech people who verified the case was defective AND a copy of the invoice/proof of purchase. Days later get an email from Samsung stating they needed proof of purchase. Even though I had included that with the case, I called Samsung and got a direct email address to send a copy of the invoice/proof of purchase. Earlier this week I got another email from Samsung stating they never got my proof of purchase and thus are sending the defective case back to me. I was livid, so I called and forwarded the email (again) with the invoice/proof of purchase, yesterday. They said they would try to stop the return of the defective case and process the exchange. I was sick of waiting so yesterday I found a new Samsung LED case on Amazon and ordered it - actually got it today (using Amazon Prime). I'm happy to say the new case works beautifully. I assume sometime before "Xmas" I'll get the replacement case from Samsung

I did ask them to send a Black replacement rather than blue, as the one I just got is blue -- once received I'll then have a backup LED case. Not great customer service in this situation, but I love the LED case so much that the past 2 weeks without it were miserable. Finally, I have no idea why the original case went bad. It was not physically damaged in any way. The chip that communicates with the phone obviously went bad!!