So i was just out in the pooring rain and i had my waterproof clothing on, and my iPhone was in the front pocket of my waterproof jacket, i got home to find my iPhone looked like it had been left out on the wall in the rain, so i dried it off and let it sit because this had happened to my old iPhone loads of times so i went to go on my iPhone just now and the screen was very very dim and a message came up saying The device is not compatible with this iPhone then the screen started to flicker on and off with the message still there i unlocked it just with what i could see of it then i thought this is stupid, i then turned it off and it will now not turn back on, So i plugged it into charge still nothing, i then plugged it into my MacBook, and iTunes came up saying the phone is in recovery mode and needs to be restored and updated so i did that and after it downloaded the update and said some message with (21) like that at the end of the message. 
If this is water damaged will apple/02 repair it for free ? or will i have to pay also i put it on the radiator just then and it reached a nice warm temperature so i took it off and ill let it settle until the morning,
If i ring apple tomorrow should i tell them the truth or tell them a lie and say the screen started going dim and the phone went off and now wont turn back on.
HELP GUYS
If this is water damaged will apple/02 repair it for free ? or will i have to pay also i put it on the radiator just then and it reached a nice warm temperature so i took it off and ill let it settle until the morning,
If i ring apple tomorrow should i tell them the truth or tell them a lie and say the screen started going dim and the phone went off and now wont turn back on.
HELP GUYS