01-15-2011, 02:28 PM
Join Date: Apr 2008
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the iPhone 1, which would be the iPhone 2G was not able to access 3G signal because of its radio chipset, the case was made of metal unlike the new ones and some aftermarket headphones werent compatible because of its indented headphone jack. it was only available with either 4GB or 8GB of built in memory. it had 128MB of ram and roughly a 600mhz processor but was underclocked to around 400 to preserve battery life. the screen resolution was 320x480 and only a 2MP camera with no video capability. no assisted GPS built in so if you lost signal any navigation apps will not work.
the iPhone 3G, was built with a new radio chipset so it can receive 3G signal. the case is now plastic but has chrome metal around the sides for antenna purposes. its available only in black, but i have heard of white ones but idk. it was available with 8GB or 16GB or memory. had the same processor as the iPhone 2G and also the same amount of RAM. now built in with assisted GPS you could see your location even if you dont have cellular signal. the camera is the same 2MP with no video and now you can use aftermarket headphones.
the iPhone 3GS is just an improved version of the iPhone 3G. it now featured either black or white plastic casing and had the same chrome antenna border. the camera was now upgraded to 3MP and it had touch focus for better photography and now featured a built in camcorder. the processor was upgraded to about 833mhz but was underclocked to around 600 to save battery. it was available in 16GB and 32GB at launch in 2009 but now can be purchased with 8GB of memory. it also came with a compass but i have no idea how that works haha
the iPhone 4 is a complete redesign. it now features black glass on the front and back and aircraft grade stainless steel on the sides. also featues horrible antenna design...i have one ugh. the screen resolution is upgraded to a beautiful 640x480 with approx 163 pixels per inch if i recall giving it that crisp HD look they call the retina display. it comes available with either 16GB or 32GB of memory and the camera has been upgraded further to 5MP and also a VGA front facing camera. now features zoom from out the box and records video in 720P. it features the same CPU as the iPad which is 1GB but is believed to be underclocked to around 750mhz to preserve battery.
thats all the information i can think of at the moment but if you google you can definitely find more in depth info