Sleep/Wake button unresponsive after water damage
I realise the water damage topic has been covered many times but I couldn't find anything relating to the sleep/wake button.
Basically, my iPhone 4 32gb went for a swim down the loo. After leaving it in rice overnight, everything appears to be working ok, apart from the sleep/wake button. I therefore can't turn the screen off or shut it down without doing a hard reset. I realise I'm lucky that this seems to be the only problem but it's quite a serious one. Leaving the screen on all day will mean the battery won't last very long at all, not to mention potential damage to the screen.
Has anyone got any suggestions? Should I leave it in rice for longer? I'm reluctant to take it to the Apple store and fork out £139 for a refurbished phone.
If only there was "an app for that". :-/
Many thanks for reading.
Macbook 2Ghz White, Mac OS X (10.6.6)