Fried phone under the sun

noelhernandez206, sounds to me more like water damage than sun damage. At this time my advice to you would be to no longer try to start or charge your Phone. Remove the battery, and totally disassemble it. Get the service manual from the bottom of this page. Clean everything with isopropyl alcohol (90%+) and a soft brush, including all connectors and cable ends. Use this guidefor the cleaning. It was written for a 3G but all the points still apply to your phone as well. Check for any burned or missing components. You may have to repeat this step a couple of times. Once it is cleaned, reassemble it and replace the battery, then reevaluate for any real damage. Right now, everything will only be a guess, and the longer you wait the more corroded it will get. Hope this helps, good luck."