Your iPhone was ruined when it fell in the water. Do as KiltedTim
suggested - make an appointment at the genius bar to get an
out of warranty replacement.
Make a Genius Bar Reservation
iPhone model Out-of-Warranty Service iPhone 5 $229 iPhone 4S $199 iPhone 4, iPhone 3GS,
iPhone 3G, Original iPhone
A $6.95 shipping fee will be added if service is arranged through Apple and requires shipping. All fees are in U.S. dollars and are subject to local tax.
Prices above are US $ - check apple.com for your area
what do you mean by cooked?
Fried. Ruined. Destroyed. Broken beyond repair. To quote Monty Python:
'E's not pinin'! 'E's passed on! This parrot is no more! He has ceased to be! 'E's expired and gone to meet 'is maker! 'E's a stiff! Bereft of life, 'e rests in peace! If you hadn't nailed 'im to the perch 'e'd be pushing up the daisies! 'Is metabolic processes are now 'istory! 'E's off the twig! 'E's kicked the bucket, 'e's shuffled off 'is mortal coil, run down the curtain and joined the bleedin' choir invisible!! THIS IS AN EX-PARROT!!