FaceTime not working nor can't find the app?

I've been trying to FaceTime my friend it keeps saying unavailable on my end. I have the iPhone 5s and he has the iphone5c he can't even found the FaceTime app nor is it not even in his setting we need help

Remove the colour from my iPhone?

So I shattered the back of my white iPhone 4s and then put food colour in it my parents hate it and told me I need to get it out… How do I remove it?

I've tried the alcohol wipes and hairspray and hand sanitiser but it only came out a little.

Available prepaid plans for iPhone under following criteria?

I'm looking for a cheap iPhone prepaid plan. I'm looking for a plan that is data heavy but is easy on the talk and text. So are there any plans where there's a "pay as you go" option for the talk and text and then I get maybe up to 5 GB of data per month?

WALMART RETURNS POLICY

Hi, on July 17, 2014, I bought an iPhone 5 from Walmart. About a week ago, I noticed that there's no 4G on my phone, which is mainly why I bought the phone. Otherwise, I would have gone with the 4S. Anyway, I called my carrier on, August 9,2014, and they said to call Apple, but they did not help. I'm thinking about returning it because the phone was not working as it should have been. I do not know if it's too late. I might return it between august 10-11. I might also return the case as well. Is this okay? Can I do this? I'm hoping that someone who is careless does not look at the date on the receipt.

My IPhone 5 camera isn't focusing?

So early I dropped my phone, and everything seemed fine. After a while, I went to take a picture using the rear camera, and heard this faint buzzing sound coming from the inside of my phone. When I tried to take a picture, it would be blurry and would not focus. I rebooted my phone, updated the software but it would still be blurry.

Girl is trying to be like me?

So i'm going to be a sophomore and she's going to be a freshmen. (We're cheerleaders)
So it's basically what it says in the title.
She's always next me when we're learning a new routine or anything. She always asks me for help and never the captains.
She got my number (we both have iPhones) and she had the "read" icon when you text and when I texted her (I don't have it) she took it off.
She has short hair and for pictures I recommended her to curl it and she was like oh I never do anything with my hair. So she came in with it curled and she wanted me to touch it up for her and she wanted me to do her makeup.
She's latched herself onto me and my group of friends she's invited herself to come eat lunch with me and my friends.
And now she's trying to be best friends with the captains because I'm close to them.
It's driving me insane! What do I do?