Press and hold volume down and the power keys at the same time. Once the recovery menu pops up, select wipe data /factory reset and then wipe cache partition.Use volume up and down to move,power to select. This will erase everything on the phone but it should fix it.
As soon as you realize that your iPhone 6 or iPhone 6s is in the water you need to start acting. After you remove it from water you need to do as much as you can to remove water from your phone. The same holds true for coffee, soda and alcohol — but keep in mind the sugar and other chemicals in these can cause more damage than water alone. Shut it down. There is a very good chance that iPhone 6 or iPhone 6s is still working after you remove it from water. Even if it is, the first thing you need to do is turn it off. You don’t want electricity and water to mix and fry something.
You plugged your iPhone into the wall or your computer, and your iPhone isn’t charging. If your iPhone won’t charge, there could be an issue with any of the three components involved with charging your iPhone: The wall adapter, the USB cable or the charging port on your iPhone.You should not see video in your i phone and may be battery could be damage also so you have to replace your phone battery.
Open Start, enter Device Manager, and select it from the list of results. Under Sound, video, and game controllers, select your sound card, open it, select the Driver tab, and select Update Driver. May be sound driver could be damage so you have to install the sound driver.