IPhone these profiles prevents iPhone users from exchanging multimedia files, such as pictures, music and videos, with other Bluetooth-enabled cell phones. Composite or component video at up to 576i and stereo audio can be output from the dock connector using an adapter sold by Apple. iPhone 4 also supports 1024×768 VGA output without audio, and HDMI output, with stereo audio, via dock adapters. The iPhone did not support voice recording until the 3.0 software update. The iPhone features an internal rechargeable lithium-ion battery. Like an iPod, but unlike most other mobile phones at the time of its launch, the battery is
IPhone (1st generation) the phone." Jobs introduced the iPhone as a combination of three devices: a "widescreen iPod with touch controls"; a "revolutionary mobile phone"; and a "breakthrough Internet communicator". Six weeks before the iPhone was to be released, the plastic screen was replaced with a glass one, after Jobs was upset that the screen of the prototype he was carrying in his pocket had been scratched by his keys. The quick switch led to a bidding process for a manufacturing contractor that was won by Foxconn, which had just opened up a new wing of its Shenzhen factory complex specifically for this