What is better iPhone 4 or iPhone 5?
The iPhone 5 has not been launched so no comparison can be made.
Should I buy an iphone 4 now or wait for the iphone 5 PS I have the 1st gen iPhone so i wanna new phone but w8ing seems better because they keep releassing new models every year which is annoying?
Depends, if you really want the iPhone 5 then you should get it if you don't mind spending more money on it. I'd wait.
IPhone 3GS to iPhone 4. I just bought a iPhone 3GS the day before the iPhone 4 was announced. Is there any way I can return mine with the money going towards the iPhone 4?
I'm assuming this is old as the iPhone has been out awhile, but no there is no return policy with Apple or AT&T.
What phone is better the iPhone 3GS or iPhone 4?
It really depends on your preferences. The iPhone 4 might have some more improvements but they are really similar.
Is there any ear phone better than original iphone ear phones to use with iPhone 3G?
Almost ANY earbuds are better than the standard Apple fare. If you want comfort and great sound quality, I highly recommend Skullcandy (http://www.skullcandy.com/).