Which Google Cardboard product should I get for Iphone 6?

I don't really know that much about this product, but i've wanted to try a VR headset for a while and this seems like a really cool cheaper alternative. I'm not looking for the actual VR headsets, just the cardboard ones because i'm not willing to pay more than 20 dollars. Anyways i've searched online and there seems to be many choices so I was just wondering which one would be best or if they all do the same thing. I also saw someone do a review on one and it had a side button so does that come with all of them or what?

How to access a Wi-Fi network that blocked my device?

So at my school a lot of people know the Wi-Fi password and use it on their phones. The thing is the school knows this and blocks your device if they find out. We've found away around this by changing the phone name to something like DellPrinter123456 or something like (SCHOOL NAME)iPad12345 (our school owns iPads). I didn't change my phone name; I just kept it as iPhone. My school kicked me off the Wi-Fi and I want to get back on. Is there a way I can do this? I have data, I'd just rather not use it. (Can we just skip the whole lecture about the illegality of it and whatever and just tell me how to do it if there's a way?) I have a iPhone 6s+ (if that matters).

How to recover messages on iMessage back into my iPhone 5C?

Please help. I have accidently deleted messages on my iMessage to a friend and sadly my friend has now passed away but I want to get the messages back on my phone and not just on my computer. I'm begging someone to please help me out because the messages mean a lot to me!

Iphone 6 works but screen has gone black?

Last night my iphone 6 randomly froze while i was on instagram so i clicked the power button and let it cool for a few minutes but after that the screen would not come back on. I tried calling my iphone and the iphone rang, the screen still black. Then i pressed down the home button and siri activated, but the screen was still black. Is there any way i can make the screen come back and everything back to normal? (i really don't wanna take it to the shop)

How can people record in movie theaters and get away with it?

About a week ago I went to go see zootopia (a really good movie by the way) and during that movie I look over to see someone recording the movie with their iPhone, I knew because he didn't turn the brightness off all the way, and when we got out I was going to tell the manager that someone recorded in the theater but I didn't there was no cop cars outside the theater so he got away with it, how do people record in a movie theater and get away with it?