Apple is offering new iPhone 4 users a dedicated toll-free hotline for them to call to test the FaceTime feature of their new handsets. Mobiture reports that calling 1-888-FACETIME and instigating a FaceTime call allows users to video chat with an Apple representative who can tell the caller how to use the feature and offer advanced tips. The service is available from 8:00 a.m. - 8:00 p.m. Central Time; Wi-Fi is, for obvious reasons, required for the service.