Will iMessage use my prepaid credit?

I recently bought and iPhone 4s and just wanted to know. My girlfriend has an iPhone 4 and she activated iMessage and it chewed up all of her credit once she started using it after activation, any information would be helpful. I'm on Optus 2 dollar a day prepaid.

How to get more space on my iPhone? - 1

I currently have an iPhone 4S and I barely have any space. The thing that's taking up the most space is my pictures which is taking 5.2 GB. I went threw all of my pictures and now only have 34 photos and 27 videos but it still says that it's taking up 5.2 GB. How do I get more space on my phone?

Why won't iTunes let me put music on my iphone? - 2

I wanted to download music to my phone but it said i needed to upgrade versions of itunes, after I downloaded the newer version of iTunes, my phone was in 'backup' then i clicked sync. After wards i tried dragging music to the 'device' area but it wouldn't let me… I was thinking on clicking the 'autofill' button but i don't know what it does. So i don't want to risk the music i already have.
Note- there's already music in my phone (i want to add more) but i don't want to lose the music i already have. What should I do?

T mobile asked me for my ssn?

Today i saw that you can get the iphone 5 without a contract on t mobile if you pay a $99 down payment my question is. Why did t mobile asked for a ssn? Do i need to be 18 years old?

IPhone 5 charging, then not charging?

I plug in my phone and it charges and then stops charging. So it's like constantly vibrating. I just got a new cable so I don't think that's it. No water damage. Any ideas? Or a quick, SAFE fix until I can get it looked at. I leave for camp tomorrow or I'd go do it then.

What is the best position to profit from the Internet

What is the best position to profit from the Internet, either from advertising or Exchange: Currency Trading Is there a program for the iPhone 5 to profit from the Internet and what is his name, I hope to leave links: to increase knowledge

How to download videos onto my iPhone for free?

So I know how to download songs from youtube onto my phone for free, but is there a way I can do it with music videos/tv shows/movies? Websites, apps, anything? And make sure I can actually download them TO my iPhone.

I Don't know my password

Okay so last night I went out with some friends and got a little(LOT) drunk. My friend thought it would be funny to put a password on my phone and not tell me and today she didn't remember. I hooked my phone up to itunes and tried to restore it. BUT it said it couldnt do something or another because of the password on my phone… And i don't know it… How can i reset it? I have the iPhone 4s