How to replace iPhone scratched camera lens?

My iPhone 4 camera is seriously scratched and i was wondering how i could replace it? If i took it to Apple how much would it cost and how long would it have to stay in repair for? I have no idea about this please help

Is the iPhone 5s charger bad?

I've heard the iPhone 5 chargers are really bad and I have a couple questions.
Why are they bad?
And are the 5S chargers just as bad?

IPhone 4 only charges when turned off?

My phone will not charge while it's on whatsoever. The lightning bolt symbol never shows. Only when I turn it off, it charges perfectly fine, but obviously since it's turned off I can't use it, and that's a problem. What could be wrong with my phone, and what should I do?

Is she laughing with me, or at me?

Me and this chick have been friends for a while now. I flirt with her, and i have a pretty good sense of humor around her. However, there's this joke among us.cuz i had a **** phone a while ago. But now i have an amazing phone. She was like how'd you get such a good phone. I'm like " you know about my pile of iphones and macs. Just picked one from there." she started laughing. Now she knows I'm just joking, and it's built upon an old joke from between us. I just want to know is she laughing with me, or at me?

Should i buy an iPhone 5 Refurbished?

HI I'm thinking of buying an iPhone but don't want to pay to much and seen you can get a Refurbished one for less, i've watch vids on youtube and they look brand new.

What do you think?

Added (1). I forgot to say it's an iPhone 5

Sony Z2 or Iphone 5s? Which is better?

I understand having an Apple product is definitely a proud feeling but still it is not water-proof whereas sony xperia Z2 is a waterproof product. What is the point of having an old Benz car which doesn't have airbag facility when you can get airbag facilty in a budget car? Correct me, if my perception is wrong

I didn't get me receipt and I need it?

So I bought the song Donald Trump from the music store on my iphone and it was the clean version(I didn't want)So I went to my email the see the receipt so I can send them a message saying it was an accident. But when I checked there was no receipt. I refreshed and and checked different files but nothing. Its been like 15 minutes. Why can't I get my receipt!

IPhone 5s camera/ flash not working?

My camera bad flashlight aren't working, when I try to take a picture it says "error launching camera, please try again" I tried resetting it, also erasing a bunch of stuff still didn't work.