Will my iPhone 5C be OK if left in a hot car all day?

The company I work for has just enforced a strict no cell phone policy and installed a metal detector at the front entrance to prevent anyone from bringing a cell phone into the building.

I'm concerned with leaving my iPhone 5C in a hot car from 8:30AM - 5:00PM. Where I live, summer days are currently between 79-86 degrees F. I asked the security guard if he could hold my phone in his office during the day but he said he was told not to hold phones for people. The obvious answer here is to leave my phone at home, however my commute is about 1 hour one way, and I don't feel comfortable not having a cell phone in case of an emergency - what if I break down? Or simply what if a loved one needs to contact me. So what do I do? Is it safe to leave my iPhone in the car? Should I keep it in a lunch box with ice packs in my car (obviously in a dry zipped section of the lunch box)?

Snapchat won't record sound, but my phone gets sound on videos?

Okay, summoning all the tech detectives here. For months, my Snapchat records a very muffled (almost like its underwater) sound, but you can't reallt hear it. I can't explain it, but the sound is inaudible and muffled. The weird thing is, the problem is only and exclusively on Snapchat. If I record a phone video, the sound is clear as day. I have an iphone. Any thoughts?

IPhone cable got wet please help (got shocked, scared to use)?

I bought a charger from Target 2 weeks ago so it's not from an Apple Store. Today I grabbed My charger from my room and carried a cup of water in the same hand, a couple drops descended onto the part plugged into the port and another drop onto the part that plugs into the phone.
I took Off the port and dried it with a napkin as well as the plug in parts and plugged it into the wall. As soon as I plugged In my phone my home button started to shock me (like when you touch a metal railing or car door) each time I touched it. I unplugged My phone and the port from the wall and let it rest.
A couple hours later I asked My friend to try it for me and see if she would get shocked by my phone being plugged in and she didn't! I didn't Either and continued to charge my phone.
I'm Scared thought to leave it plugged in at night or use it for a long time in case it starts a fire or I get shocked and die or something.

Should I just Get a new charger or continue using it if there's no problems? If you were in my situation what would you do?

Instagram new story features not appearing?

So basically, I have two Instagram accounts. One is my main and the other is my private. I don't have the poll slider for stories on my main account, but I have it on my private account. I don't understand because the problem isn't with my phone or the app, just that one account. I tried sending a support request but they haven't responded. On my main account I have the question feature (it was released after the poll slider.) Please help me figure out the problem. (I'm using the iPhone 6s)

Accidentally found someone's iPhone and wanted to give it back to the owner. What do I do?

Yesterday I found an iPhone 7 when I was on my way home. The phone was just lying on the ground before I picked it up. There were scratches everywhere, however, the phone itself looks pretty new, just as if someone purchased it recently but wasn't careful enough. I turned it on, but there was absolutely nothing - no details and no information about the owner. The phone needed activation and it seemed so strange because it usually requires activation after you've purchased and unboxed it. I want to give it back to the owner, but I have no idea how to do that simply because there's absolutely no information related to the owner. What do I do? And why would someone just leave the phone like this lying on the ground? By the way, I found the phone after midnight (it was really dark) and I felt like someone was watching me. Truly uncomfortable. The whole thing is so strange.