iPhone that won't turn on or charge

1. Verify that the Sleep/Wake button functions.   If it does not function, inspect it for signs of damage.   If the button is damaged or is not functioning when pressed, seek service.
2. Check    if the Liquid Contact Indicator (LCI) in the headset jack or dock connector is activated or there are signs of corrosion or debris. Learn more about LCIs.
3. Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.