Will iPhone 3 hard covers fit an iPhone 4?
no because the 3/3gs are curved and the 4 isn't
What iPhone case has a warranty that if the iPhone breaks they will replace the iPhone?
None that is currently on the market. You should have your phone insured through either home content insurance or specific mobile phone insurance.
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.
Do iPhone 3 covers or cases fit a iPhone 1?
First of all, it's the 2g and the 3gs you are referring to. And I don't think so since the original 2g has a different exterior design.
Will an AT and T purchased iphone work on Verizon's network if Verizon gets rights to use the iphone on its network - I would like to upgrade my iPhone but want to know if I should wait?