Backing up iPhone on iTunes?

If I back up my iPhone on itunes on my computer, what gets backed up? Like does literally everything get backed up. Like photos, contacts, messages, notes etc? And where does it actually go? Does it create a folder on the computer or something?

Added (1). Is it only supposed to take like 1 minute?

No FACETIME in iPhone 4 ios 6?

How can I have Facetime in my iPhone 4 ios 6?
Help! I updated my iphone to ios 6. I was shock to find out that there was no Facetime. I checked on the settings of my iphone but there really wasn't any Facetime. Then, I checked on my friends' iphone 4 ios 6 and found out that they have Facetime.
Is there something wrong with my phone or is there a problem while i'm updating it…
I really WANT facetime so badly.

Does facebook on iPhone use data?

I have 2GB free data usage per month on my iPhone at the moment. I just downloaded the Singtel app to keep track of my data usage and realised that I've already used 930MB despite only having had the phone for a week. So I'm trying to figure out what I did that took up so much data already.
1. I go on facebook & twitter
2. I play Simpsons Tapped Out (does this use data too?)
3. I downloaded various camera apps and stuff like Angry Birds
4. I have NOT watched a single youtube video on my phone

So do you have any idea which one I did that used up so much data?

Can I switch from 2 year contract to a month to month service?

I'm getting my Verizon iPhone 5 tomorrow. Would I be able to switch from a 2 year contract to a month to month service? I know that the iPhone 5 with month to month service is more expensive but I'm thinking I could just pay the rest of the price of the iPhone to Verizon instead of returning this phone and buying another one.

Transferring number from old sim card to new?

Okay, say if you get a new phone (iPhone to iPhone 4) you take it to the store and get them to change your number from your old simcard to the new one that fits the new iPhone 4. Does the old phone not work anymore? And does all your contacts, photos etc stay on the old phone or go to the new phone with the new sim card?

How to use ifile on my iphone?

Ok so iv been moving my music around in ifile so that i can put most my music in this pandora app i downloaded.while i was doing this i realized that in the pandora application, when i looked through my music library that all of my music folders were all spread out because the app organizes it in alphabetical order. So i went to ifile and for all the folders of music i had i put a period in the front of all the folder names. I went to the pandora app and the folder names went to the top like i was hoping, but when i go back to ifile all the folders i put a period in front of where gone. They just disappeared out of the pandora folder on ifile. Does anyone no why the folders disappeared, or where they whent

IPhone 3GS constantly restarting?

I reset my iPhone with the power/home button thing, and then I tried to turn it back on. It will turn on and as soon as the apple logo is about to go away it turns darker then the screen goes black. Then it tries to turn on again. It's been doing things for a couple hours now. I can't say what iOS version it is because it is not hooked up. It's about three years old, has been dropped and wet multiple times. It was working perfect this morning though. What can I do?