The amazing Apple hype machine soon could help Sprint Nextel sell bunches of music-playing wireless phones. The debut of the much-heralded iPhone is thought to be imminent, though Apple and AT&T executives remain mum on the exact timing. Apple, which is making the device, and AT&T, which is providing the wireless network for the iPhone, are positioned to be the prime beneficiaries of the new product.

Gauging the iPhone's Ripple Effect