IPhone blinking Apple logo

I have an iPhone 4 that started randomly blinking the apple logo. We've tried hard reset, and everything. Nothing seems to work. The only thing the Google told us was we had to restore it. We get to the DFU mode, plug it in, and when we go to restore it, it asks to restore and update. It can't be updated anymore and says an error, and there's no option to just restore the phone. What do I do?

Should I Purchase an iPhone 5S or a Nexus 5X?

I'm a bit torn because on one side, the iPhone choice seems safe since i already own a Macbook and an iPad, bit it has dated specs. The Nexus 5X has updated specs but it won't work alongside my apple products and android may take some getting used to. These are the phones that are cheapest and within my budget range.

What do I do? How do I respond to this?

About 20 minutes ago, 3 teenagers came to my door (I'm a teenager myself.)
It was two guys and 1 girl, all about the same age. One of the guys, who did most of the talking, was saying that he was at the mall with his two friends and he lost his iPhone 5s and was tracking it on "find my iPhone," and it led him directly to my house.
He had a phone in his hand with the tracking device on it, and kept insisting that it was telling him it was at my house. I told him that I haven't been anywhere today, and that I surely wouldn't steal a phone. I have a phone of my own, I don't need his.
There's an alley way right behind my house with a strip center and it has a cellphone store, although I'm not sure if they're open on Sundays or not. The kid said he noticed it on his way over here.
I told him it was possible that someone could have been walking in the alley way and possibly tossed it into my backyard or my neighbors backyard or that it could be in the alley, even though it's locked.
I told him he was welcome to look around and that I would check my backyard, but that I didn't have it and I didn't know what else to tell him.
I was wondering if maybe his "find my iPhone," was accurate enough that it maybe could have brought him to my house while someone tossed the phone close by, or if it was all just bs? The girl that was with them kept staring at me, never taking her eyes off of me and was looking at me as if she didn't believe I was telling them the truth.

How to record gameplay on my iPhone?

I'm wanting to start a YouTube channel but one problem, I can't find an app to record my screen. I watch a YouTuber named "Heyimbee" and she is recording on her iPhone, so I was just wondering if you knew what she uses or an app you know about that actually works!

IPhone 6s iMessage won't activate?

IPhone 6s iMessage won't activate?

Added (1). I'm currently studying abroad and it has been working for the past two weeks and today it just keeps saying activating. I can't receive SMS texts either. I have restarted my phone by network, and settings. It won't activate with my email either.

How to get back photos from I cloud?

So I (it wasn't really me) restarted my phone and all my pics were deleted. My phone was backed up since last night. So I restarted my iPhone and nothing was there. I went to my setting to see when my last back up was and it says "this iPhone is currently being restored and will back up when it is done." What does hat mean? Will I get my pics back? Or will it back up "everything I currently have on my phone" which is nothing?

How to find lost iPhone without Find My iPhone?

Basically, my mom took away my old iPhone (iPhone3Gs) last year. Now, I'm trying to find it, however she doesn't remember where she put it. The phone itself, however is not associated with Find My Phone which means I can't use it to find it. As well, it appears to have deleted from my devices list in my iTunes account. How to find it? Does this mean I have to turn the whole house upside down to find it?