Twice as fast. Half the price. This is how Apple advertise iPhone 3G, from day 1 until now. Ever wonder how true is that? Let's analyze words by words.
Half the price applies to US iPhone 3G unit price as compare to previously iPhone 2G unit price. This does not include the AT&T subscription plan customer must stuck for 2 years (iPhone 3G) as compare to 1 year (iPhone 2G). This explains the asterisk(*) behind half the price.
Twice as fast gives you the impression that iPhone 3G is two times faster than iPhone 2G.
I did a research after stumble upon this article.
Suit Alleges AT&T, Apple 'Oversold' iPhone, Strained 3G Network
In short the person is suing Apple over false advertisement, claiming iPhone 3G is twice as fast. He complains about grindingly slow network speeds and unreliable 3G network performance. This makes me wonder how about the hardware speed?
For those who have purchased iPhone 3G, here's the inconvenient truth.
iPhone 2G and 3G uses the same Samsung S5L8900 412 MHz ARM 1176 processor, same 128MB DRA.
http://www.theiphonewiki.com/wiki/index.php?title=M68ap
http://en.wikipedia.org/wiki/IPhone
The difference are as followed.
2G: Aluminum back case - 3G: Black or White plastic back case
2G: Edge network - 3G: 3G network
2G: No GPS Antenna - 3G: Integrated GPS Antenna
2G: Proprietary 4mm headphone minijack - 3G: Common 3.55mm headphone minijack
2G: Thinner body - 3G: Fatter body
2G: Color display - 3G: Better color display
2G: More powerful Wi-Fi antenna - 3G: Less powerful Wi-Fi antenna
I bought my iPhone 2G at RM1800 (no subscription plan). iPhone 3G is selling ~RM2800 (no subscription plan) in Malaysia now. Thus you are actually paying RM1000 for the 3G and GPS antenna, a slightly better color display, in trade off aluminum case, bulkier, and less powerful Wi-Fi antenna (Steve Jobs expect you to use 3G all the time).
I just upgraded my iPhone 2G to latest Firmware 2.2. Guess what, A-GPS actually works! Using cell towers I can determine my position, in 1km radius vs 100m for satellite GPS. Anyhow iPhone Google Map does not provide real time navigation. 1km vs 100m doesn't make much difference in this case. In the end you still have to learn how to read the map.
For those planning to get iPhone 3G, please do not be discourage by this blog. You do not have any choice. iPhone 2G has long been discontinued. 