How to program my iPhone 5s to turn my camera shutter off?

So I read online saying because my phone came from Japan I can't silence my camera. It's not allowed in Japan, but since I live in the US I figured I can find away to do so. So I'm asking to those programmers, is there a way I could program my camera to shut up.

Can I use my cousins old iPhone?

My cousin recently got an iPhone 6plus on Verizon as an upgrade from her 5s. I have a 5c on T-Mobile and was wondering if I could put my SIM card into her old phone. Will it work even though we're on different cell services?

Are all iPhone 5 replacement screens the same?

My iPhone 5 has cracks on it and I'm looking to replace it.

I've looked online and there are A LOT of different touch screen digitizers for it. There are big brands like iCracked and uRepair along with a lot of other generic ones on Amazon.

Which one would be the best? Or all of them the same? Can anyone recommend me a good one?

Also another q, there are also screen replacements that come with the front camera, mic, and home screen button assembled. I have a question about those, are they comparable to the official Apple quality? The camera and microphone?

I've seen a lot of them around the same price of the ones that come without it assembled.

My iPhone broke and I need to recover the data on it?

My sister dropped my phone from pretty far up, and now the screen does not show anything - it won't turn on. I'm pretty sure I'm still able to charge it, (that's a maybe) and when I plug it in to the iTunes app on the computer it recognizes a device is connected. We took it to the iPhone store to see if we could fix it, and the guy didn't really do anything except take off the back of the phone and examine it. I really need some of the stuff on my phone back, so please help!

Resetting your apple iphone?

I reset my apple iphone 4s tonight and it reset fine but now when the phone is turning on it is just a black screen with the white apple and I don't know what to do? Someone help?

He wants to see me, I told him I had to study this weekend, I think he got mad?

Ok! Bear with me.
I'm a 23 year old nursing student. He is a 25 year old college coach, very shy and introverted.

We have hung out twice, our first time was a night on the town (we danced, we had a great time, it ended in passionate kissing) and our second time was in his apt (passionate kissing again, no sex, he stopped before it got too hot and heavy). At the end of our last date, we discussed seeing each other this weekend. I told him I'd let him know.

He texted me today, asking me what I'm doing tonight. I'm a nursing student, I'm very driven to succeed and do well in my classes, and I have a HUGE test on Monday. I responded that I'm studying.
Him: Am I going to see you at all this weekend?
Me: Yes! We will see each other. I'll make sure of it. Maybe Saturday for a little bit if you're free?
Him: A little bit?
Me: Unless I come over with my book and study stuff, haha. But then I wouldn't really be any fun.
Him: Yeah I wouldn't be able to keep my hands off of you either.
Me: :( What a bummer. Believe me, I'd much rather be with you than study for this test!

My text was sent at 2pm. He read it immediately, started typing (we both have iphones), and stopped. It is now 6pm. Why hasn't he responded? Guys, was my text mean or something? Did I say something wrong? Granted, his team has a game tonight at 7pm, but he just flat out didn't respond. I don't want to keep hounding him with texts. What should I do? How would you feel if you were him?

Added (1). By the way, we have discussed the fact that we both have busy schedules, and that since I'm a nursing student, I won't have much free time. He told me he thought about if I was going to be too busy to see him on our first date. I assured him that I will make time for him. I really like this guy. We have great chemistry and I don't want to ruin this.