At WWDC2010 the long-awaited Apple iPhone 4 (16GB and 32GB version), the 4th generation of iPhone, was released this June, together with iPhone 3GS (8GB version), after the success of iPhone and iPhone 3G . Please see Apple iPhone 4 review for more details.
1. Apple iPhone 4-Appearance
(1) IPhone 4-Keys Layout
IPhone 4 has some changes in layout of SIM card slot, volume keys and dual-microphone. Dual-microphone with noise-suppression function is another improvement in appearance, which
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