The movement that iPhone came into market brought a technical revolution in the cell phone market. People found some imperfections while loving it. So based on the weakness of iPhone, Apple Inc. launched the second generation of iPhone, iPhone 3G in 9th June, 2008 which had been improved in many parts. So we will make a comparison of the two generations to see what had been changed in iPhone 3G.

1. Outlines.
As we can see from the pictures that the colors of iPhone is part black and part white. But iPhone 3G is totally black or totally white. The covering of iPhone was metal while the 3G’s was plastic so the 3G is a little lighter than iPhone. And about the size of two cell phones, 3G is a little bigger than iPhone which is hard to been found by eyes.

2. Main Body
Comparing with iPhone, iPhone 3G took lessons from the design of MacBook Air, so the arc on the back of cell phone made the phone looks much more beautiful. The other point was that the headphone connector that was a big problem in the past Apple products was improved. The 3.5 mm headphone jack was designed on the side of the cell phone and it makes every kind of headphones possible to be applied. https://i4you.ru/

3. Networks
The difference of networks was most obvious difference of the two cell phones. iPhone did not support the 3G networks that made it a target to be criticized by the medias. This time, iPhone 3G had stepped up to 3.5G level and support WCDMA/HSDPA networks. According to Jobs’ saying the speed is much faster than Nokia N95.

4. Built-in functions
Another advantage of iPhone 3G was that GPS module was added which supports the mobile navigation and location search. The camera was the same as iPhone, but for the GPS, it could provide the geographic grid of the pictures. The cell phone could record the latitude, longitude and altitude of the shooting locations. And the picture element per inch (ppi) of iPhone 3G increased to 163 ppi from 160 ppi of iPhone without any improvement of the screen and distinguishability.

5. Battery
The battery of iPhone 3G was still designed as fixed as iPhone. The standby time and speaking time of iPhone 3G had increased much by comparing with iPhone. The speaking time in 2 G networks increased from 8 hours to 10 hours and the standby time increased from 250 hours to 300 hours. But the online time, music and video playing time did not changed comparing from the past. Besides, there is a tool in the sales package of iPhone 3G to help the customers take out the SIM card easily.

6. Software
The improvement of iPhone 3G in software was effective. It could support many languages, Chinese, Japanese, Korean and other Asian languages. And it support gesture recognition. The iPhone 2.0 firmware could support AppStore software store that the developer all over the world could discharge by free or sell iPhone software through the store.