iPhone 3GS
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- Weight: 135 grams.
- Camera: 3 megapixel, tap to focus and video recording.
- Display: fingerprint-resistant oleophobic coating.
- Cellular and wireless: Bluetooth 2.1 + EDR.
- Features: OpenGL ES 2.0, voice control, better battery, accessibility, compass, home screen background (iOS 4) and multitasking (iOS 4).
iPhone 3G
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- Weight: 133 grams.
- Camera: 2 megapixel.
- Cellular and wireless: Bluetooth 2.0 + EDR.
- Features: OpenGL ES 1.2.
Source: www.apple.com