UNLOCKING IPHONE Help NEEDED?

So I recently bought a second hand I Phone 5c. When i got the phone i rest it immediately. Currently I can't get past the setup stage because I don't have a sim. I was wondering, is it still possible to unlock the phone so i can use whatever sim i want in the phone?

I don't know what the apple id is for an iphone I have. Is there anyway to access the device?

What happened:
At school I leave my locker unlocked all the time because I have a faulty lock and i'm too lazy to get a new one. This morning (Saturday) I open my smaller pocket at the front of my school bag, like I do every day, and i found a black iPhone 5s. The phone's screen is pretty badly cracked, the phone also hasn't been used for about 45 days because there was a notification on the screen saying 45 days. The phone's service has been turned off (No Service) and it was dead flat when I found it. I thought that someone psrobably dosen't want this phone then? I mean they went to all that trouble just to put it in my bag? So I decided to wipe it clean considering there was a passcode. I can't get into it anyway because I don't know the owner's apple id.

Should I just hand it in like I was originally planning to?

Is there any legit, free, no credit care dating/hook up websites?

All seem to have membership required, credit card, or just shady as hell with no matches around my area.

I've used tinder, POF, and OKcupid. I have an iphone and can use the computer. I was curious on what other people use.

Thanks in advance!

Added (1). credit card* not credit care lol. My bad.

Can a virus spread over Wi-Fi?

I accidentally clicked on a link that ended up being the FBI virus where they wanted me to sent them $500. I was on my iPhone was able to exit the site and cleared my history and data. Everything I read said that iPhones as long as their not jail broken can't get virus's. Just so someone else can confirm there's no virus correct? And I was on a home Wi-Fi that has other iPhone users, the virus can't spread to their phones right?

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I recently picked up an iPhone 6 with AT&T and LTE. I went to go use data, and it wouldn t load. Trust me. I've tried everything. From simply putting the device on airplane mode, to resetting the network settings and reinserting the SIM card, I think IIm safe to say I've tried. Also, when I go to turn on LTE, it won't show up at the top left corner of my screen. And yes, I've tried unlockit.co.nz, and it also didn't work. IIm taking it to the store to get it fixed but if you know any solutions, let me know right away.