I dropped my iPhone 5S and now the touch ID won't work?

So I ended up dropping my iPhone, and the screen would lag pretty bad for the first few minutes. I restarted it and everything seemed fine, but the fingerprint ID wouldn't work. I went to the ID section in settings and my fingerprints were deleted. I tried to click on it, but the letters are grey and it won't let me. I tried to restart my phone again a few days later and it still won't let me add fingerprints. I don't have a warranty so I'm not sure if I should take it in or not? I'd rather try and fix it myself, if there's any way.

How to unlock my Sprint iPhone 5C?

Its IOS 7.0.4 and I can't seem to find a video or instructions to unlock it. I'm planning to use with Metro PCS or any other carrier that doesn't require a 2-yr contract, any help would be awesome.

How to change my caller I.D. For my iphone 4s?

Recently, I called a buddy of mine and instead of it saying my name it said something like karma or coral and it was me when he answered. I was just curious if there's an app or software for that for iphone 4s's. If so, can you refer me to it?

I'm a little jealous of my cousin?

I know it's bad to be jealous, but I don't know, I feel like I can't get away from it. For Christmas she got an iPhone 5s and she's 11. I had a little Nokia phone, all old and broken for 5 years, and I'm 17. Her parents aren't that rich, and my mom isn't neither, but I know it doesn't affect me, but I feel a little jealous. I know it's wrong too. I'm grateful for what I have, but she's kinda spoiled, and I barely get anything because I only have my mom and she works hard, for a check that isn't that big. And today was her birthday, and they're throwing a birthday party for her with all her cheer friends she just met, when her parents could barely afford it. And I don't have birthday parties. Never a sweet 16 or quinceañera and not like two presents. And a dinner with me, my mom, and friend. And no one at school wishes me happy birthday, I know they can possibly know without me telling them, but I feel weird saying "hey its my birthday!"
Anyway, I know it's not all about the material things and having your loved ones is what matters, but I can't help but feel a little jealous, since she's only 12 and has it better than me who is 17, but I'm grateful for what I have. I guess my question is is it normal to feel this way? Should I be ashamed for feeling like this?

Why do iPhones have the same lock screen picture in movies?

Am I the only one who has noticed this?
Every movie I see with an iPhone, the lock screen is of the raindrops.
I don't think I have seen any different but I might just not be noticing it if there are different ones.

This might be a stupid question with an obvious answer but I honestly have no idea.
Why is this? Or why would this be?

Why can't I download apps on my iPhone 3G?

Well my iPhone is the 3rd version 4.2.1
And I can't download apps and everytime I TRY it says I need iOs5…

I have watched videos on YouTube, but nothing has worked!

Is there anything else I can do?

Is there any way i can change my text caller id on iphone?

So as we know we can change caller id using apps, when you call someone on their phone it displays another number… I wanted to know if i can do that on messages, like i send a message but the other person gets it from a different number, the number which i changed to, iss there any way to do it… I have a jailbroken ihpone3gs

My imessage is not working, why?

So I tried to text my friend (we both have iPhones) and I have the iphone5, but when I type an imessage and hit send it doesn't work. Like I'll send an imessage and it will go through as blue but on the bottom won't say delivered. And if I hold down and press the imessage it will give me an option saying "send as text message". And also when I facetime audio them it will say "not avalible for FaceTime". Or "FaceTime failed". And when I call them it will ring ONCE then go straight to voicemail. And this is only for one person. With everyone else, imessage and FaceTime and calls work. And they have a good connection and so do I. And my imessage is on. I don't know what else to do.