My iPhone was submerged in water. I blew it out with compressed air and sealed it in a ziplock bag with an Evadry silica gel unit until the fog had cleared from the camera lens. I couldnt turn it off manually, so It apparently shut itself down when the battery ran down. Once the lens was clear, I took it out of the bag and let it charge. It came back on when it had power.

Everything but the power button is now working perfectly. I don't know if the power button is a non- electronic part. Is this likely to be a fault in button assembly, or is this more likely to be a fault in the logic unit? How can I tell which part is bad?

Thanks!

There's most likely some corrosion on the cable inside. You'd have to open it up to see the damage.

I agree! Have your phone checked with a technician.

Mine also. I am so sad.

Pls check it might be cover under warranty.Other wise you can send to certified iPhone Repair agency or company like powerbookMedic. Before checking you need to verify the feedback on net