What is the Difference Between Apple iPhone 3G and 3GS?

The iPhone 3G and iPhone 3GS have several differences in terms of performance, features, and design. Here are the main differences between the two models:

1. Performance: The iPhone 3GS has a significantly faster processor (600 MHz) compared to the iPhone 3G (412 MHz), with a superior graphics processor as well. It also has twice the RAM (256 MB vs. 128 MB) and support for faster 7.2 Mbps HSDPA.
2. Design: Although both models have identical dimensions, the iPhone 3GS has a slightly different back design, with silver "details" text and a model number of A1303, while the iPhone 3G has a model number of A1241. Additionally, the iPhone 3GS weighs slightly more (4.8 ounces) than the iPhone 3G (4.7 ounces).
3. Display: Both models have the same 3.5-inch, 320x480 display, but the iPhone 3GS has an improved "oleophobic" oil repellent coating, which helps resist fingerprints and smudges.
4. Camera: The iPhone 3G does not have a video camera, while the iPhone 3GS does. To check which model you have, open the Camera app and look for the video function on the bottom right corner.
5. Operating System: The iPhone 3G can be upgraded to iOS 4.2.1, while the iPhone 3GS can be upgraded to iOS 6.1.6.
6. Battery: The iPhone 3G has a non-removable Li-Ion 1220 mAh battery, while the iPhone 3GS has a non-removable Li-Ion 1400 mAh battery.

Comparative Table: Apple iPhone 3G vs 3GS

Here is a table comparing the differences between the Apple iPhone 3G and iPhone 3GS:

Both the iPhone 3G and iPhone 3GS models use a rounded plastic design, however, the iPhone 3GS has a slightly improved design with an oleophobic display, better camera, digital compass, and voice control functionality. The iPhone 3GS is available with 16 GB or 32 GB of storage, while the iPhone 3G is available with 8 GB or 16 GB of storage.