Do contacts take up memory on an iPhone?

I'm considering getting an iPhone 4 or 4S soon. And with the release of the iPhone 5 possibly, these will go down to my price range. The iPhone 4 is cheapest in 8GB but when i was looking at the apps and music I have on my iPod touch, they take up about 11GB altogether so I'm going to have to sort things out onto an iPhone if i was to get one at 8GB.

But do contacts take up memory too?

Rainbow lines across iphone screen?

I got my iphone 4s about a month ago and i've had the lifeproof case on it since day 1. I have never dropped it, or gotten water on it etc. Today i was in the midst of typing a text message, when i noticed some multicoloured lines going horizontally across my screen. When i went to my home screen i noticed that half of my screen is completely like that. Everything is still fully functioning for the time being, but its really annoying! How do i get rid of this?

Can i trade in my broken iphone 4 for a new one?

I have a white iphone 4 with verizon and the screen is cracked, the lock button is completely broken, and i can tell that the home button is also starting to break. Is there a way that i can trade in my iphone for a new one? What would i have to do and what would be the cost? Or do I have to do something else?

I want 2 Buy IPhone 4 from China?

Hi
I had some questions regarding BUY IPhone 4 from China.
1-If I buy it from China, Can I use it in USA, She said IPhone is gonna be Unlock.
2-What's difference between USA IPhone and China IPhone?
3-If I bought from China what's next Step? I must go to AT&T or Verizon? Or Apple store?
4-Do I can use for both Company? At&t and Verizon? Maybe T-mobile or others?
5-How about Warranty? Is there any place that I can get Warranty in USA?
6-Any idea or suggestion?
7-Have you ever heard any Problem on this way?
8-How about IPad 2&3

IPhone is water damaged. Should I lie to apple?

I work at a day camp and my phone got water damaged. Should I lie to apple and say I have no idea why my phone doesn't work? I want to get it fixed for free but I don't think it's under warranty.

My iphone will not turn on and nothing is working

I have the iphone 3gs i have had it since the start of last year and it died today i tired to charge it using the standard iphone charger and it didn't work so i though it was the charger so i got home and tried to reboot it and that didn't even work i have had it plugged into every charger point i have even had it on a iphone radio port and that didn't work. I plugged it into my computer and itunes has not picked it up and the little red battery blot symbol thing isn't even coming up what can i do?