Possibly, it depends on how much moisture the iPhone was subjected too. If it was dropped into the lake and went to the bottom, chances are it is ruined beyond repair. If it got a light sprinkling of moisture, it may have survived.
Normal everyday water is a conductor of electrical current - in electronics, anything with power applied, like an iPhone turned on (even in standby mode) all the electronics are still active ... water covering the plus and minus contacts of an electronic component will short it out and render it completely useless. There is a type of water that does not conduct electrical current - it is called DIW or De-Ionized Water - used in large power amplifiers to cool electronic components.
Click on the related link below that states 'How to fix your wet iPhone' for an excellent blog on how to fix your wet iPhone (with references to detailed technical information).
I dropped my iPhone off a dock into the ocean water at night and came back the next day at noon to get it (it was pretty deep and it required some diving). It survived amazingly because of some blogs I read about how to save your iPhone and the best advice I can give you is dry it off with the sun first then shake the phone to get rid of most of the remaining water, and then dry it in a container full of uncooked rice for two days or so. Then I tried plugging it in and I could see the apple on the screen but it would turn on and off, so I did some more research and I read that you should dip it in 91% alcohol for some time. Instead I did a quick dip and put it in a bowl of a product called "damprid" for a night, then I dried it with a blow drier on the coolest setting for some time (I also recommend the cans of compressed air that you buy in Office Depot) and I tried plugging it in again and it shows the sync icon and as far as I know it is fully operational. It may have some issues with the battery, and some remaining haze below the screen but I don't mind.
You should try Silica Gel Packets to dry out your phone. There was a good article on the Associated Content website that explains how to dry a wet cell phone, iPods, or any electronics. You need to take the battery out of your phone and place your cell phone and battery in a zip lock bag with Silica Gel Packets. Silica Gel will remove all the moisture from the phone and its components, something air drying will not do!
It starts to work again.
it gets wet, it turns pink. it doesn't have to be submersed, just wet. on the iphone support page you can find pictures of what it looks like on each version of iphone/ipod.
Does my iphone work in Africa?
No, the iPhone 4 is not the only iPhone that will work with Verizon. All iPhone models, including the iPhone 3G, 3GS, 4, 4S, and 5, will work with Verizon.
If it gets to hot the thermostat wont work. you need to repace it and the gauge will work again.
Yes, it does work well on an iPhone
The iPad's version of Garageband will not work on an iPhone.
If you were trying to unlock/jailbreak it: Unplug the cable from iphone then hold down the home and stand by button for some amount of time. If that doesnt work then plug the iphone into the computer again then restore the iphone on itunes. WARNING! If neither of those worked then Apple is not responsible and can not give you a new iPhone for free
yes
Yes. if its Iphone 3G, then you should be supported by Softbank or Docomo 3G Iphone 2, dont work..
It is extremely unlikely to.
iPhone Apps, including games, work only on iPhone, iPod Touch and some work on the iPad.