Yes 4G is better. The download speeds are much faster on the 4G compared to the 3G. You will also be able to see streams and videos clearer on the 4G compared to the 3G.
A 3g coverage map would allow you to see an area that the 3g network covers. This is an approximation. You can visit http://www.wireless.att.com/coverageviewer/#?type=voice to see a map of their 3g network.
no the iphone is much thicker
How much does an iphone 3G cost without network in the UK?
341.333333
Not necessarily. 3G just means the phone can do 3G speeds with the providers internet service or data service. A smartphone can do email, internet, and much much more.
the button on the left of the ear piece
Maliksadam
2g is 2nd generation 3g is 3rd generation. 3g is much faster. iPhone 3G can support WCDMA and HSDPA frequencies, but the iPhone can't.
A regular iPhone 3G (not the 3G S) costs about $99, give or take some depending on where you buy it (not including tax).
$140
Iphone 4 cases are not compatible with 3g iphones because the newer iphone is not made like the 3g. They have different bodies are are much more angular that the 3g.