(Reuters) - Apple Inc unveiled a new iPhone on Monday that goes on sale in scores of countries this year, preparing its fastest-ever global roll-out to try and stay a step ahead of rivals like Google Inc in a red-hot smartphone market.
CEO Steve Jobs showed off a redesigned $199 "iPhone 4" that is a quarter slimmer than the current handset. The device boasts a higher quality screen and better battery life, video chat via Wi-Fi, and a gyroscope sensor for improved gaming.
A slim but energetic Jo