I don't think so, must be a later generation iPhone. But there could be a way to do it on the cydia app if your iPhone is jailbroken.
The iPhone 2G is much slower than the iPhone 3G.
IMessage is some thing were u can chat to people who have iPhone iPod or iPad! :)
If you have iMessage installed you can only iMessage other iDevices that has iMessage installed on them. If someone has an iPad 2 but not with 3G but has an iPhone, then the iMessage will go there iPhone.
between iphone to iphone via iCloud
Yes
If you have or can install the iMessage software on it you can but if not you can't. You can only iMessage other iDevices.
You can only iMessage with someone else who has an iPhone, iTouch, or iPad.
The iPhone 2G.
The first iPhone (2007) is referred to as the iPhone 2G. Although Apple just called it iPhone.
2g is 2nd generation 3g is 3rd generation
they are different in size and shape, can't you replace iPhone 2G case with iPhone 4 case.
no, it does not. however, it does have iMessage