Received new iPhone 4S yesterday. Backed up old iPhone 4 and then synced new 4s. I received a message on phone "Waiting for activation. This may take some time." Been waiting almost 24 hours. Instructions that came with the phone said it would only take minutes. What's going on? I don't have a home line, so I can't call customer support and I can't find any information online. Very frustrating being without a phone.