Because humans are dumb asses
No phone is waterproof.
yes there is already a phone out that is waterproof!
Yes the Underwater Waterproof Cell Phone Armband Case by Aquapac
It is rainproof but you cant submerge it
No. The Sony Xperia Miro is not a waterproof capable phone.
Good luck with that you cant!
yes it is
No - it will not.
No, the iPhone 4 is not waterproof. However, there are cases that you can buy, like LifeProof or OtterBox, that you can use on your phone to make it waterproof.
It depends on the phone itself, not the carrier.
you cant
Companies like Liquipel (Liquipel.com) have the abilities to make products superhydrophobic (waterproof). The price of this is roughly $60 for a phone.