I left my iphone in the sun by accident when i went to the beach yesterday. when i tried to turn it on the apple logo appeared then it dissolved and hasn't turned on since. im freaking out! help!?

i already tried holding the power button and the home button for 20 seconds, recharging it for a day, letting it cool off, hooking it up to a computer, and still nothing

I had this problem, too.  I left my iPhone in the car for an hour and it got too hot.  Got the yellow triangle on my screen warning that the temperature was too high.  The phone was dead.  So, I let the phone cool down for a couple of hours, then I plugged it into my MacBook Pro and held down the iPhone's power button and home button together for 20 seconds, and fixed the problem.  Hooray!

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