I have an iPhone 5c and it was left out side for days, now it won't charge. How do I fix it?

The phone was left outside in this AZ weather which has been over the three digits these past days. When I found it the screen was popped out on the top left by the volume buttons. I plugged it in to charge but it just gives me the low battery icon and I can't do a hard reboot. How can I fix it without taking it to the Apple Store?

Keep it on the charger for a few days even if it doesn't look like it's taking a charge. It could be damaged or just a really low battery level. Also, try holding down the power button for like 20 seconds (although this might not apply to your phone model). I'd guess the heat 100% trashed the battery (especially if you started out with a fully charged battery). You'll need to do a diy battery fix or take it in for repairs.