Is there anyway I can restrict my iPhone to Wi-Fi connection only?

So this month I went over my data plan. Way over.Me and my family of four including myself, share a data plan. Apparently I use way too much Internet. The total amount we should be paying each month is around $100 and because of me, our bill this month was a little over $1, 000. My parents were insanely pissed but i don't wanna give up my Internet privileges. Is there anyway I could restrict my phone from using Internet connection unless connected to a Wi-Fi network?

How to transfer downloaded music from iphone 4 to itunes on mac?

Now I don't need anyone telling me that downloading music from the internet is wrong. I know it's wrong but some people just don't have the money to buy a lot of songs, okay? I love music and when I got a new mac, only my purchased music transferred to my itunes. Is there anyway I can get my downloaded songs from my phone to my new itunes?

Iphone 3gs jailbreaking and unlocked

Okay so yes I'm new to the iphone stuff, but I was looking up stuff and basically everything said you can jailbreak but not unlock, but you can't unlock unless you jailbreak. And I bought a 3gs on ebay that was unlocked so I thought it would be jailbroken. I just got the fone and my tmobile sim card works so obviously its unlocked, but when I looked for apps that I heard about for jailbroken fones I don't see any. Is there something i'm missing? And If I need to jailbreak it, will it get messed up that its an unlocked fone? Thanks!

Added (1). I thought it would already be jailbroken, being unlocked I thought it needed to be jailbroken first. But I don't see anything in the phone. Any recommended websites that have guaranteed ways to jailbreak?

Why can't I compose, delete, move, or forward any message?

I can read my email messages, but I can't do anything else in Yahoo mail - I can't compose, delete, move, or forward any message. It's been like this for over a couple of week, at least, and it happens regardless of which browser I use (IE, Firefox, or Chrome). I think it might have been as early as when they introduced the new interface.

I can select a message for deleting (for example), and when I hover the cursor over the Delete button it turns into a little finger, but when I click the mouse button nothing happens - the button on the screen doesn't look pressed and nothing happens. Nothing. It's as if I didn't use the mouse button - the same mouse button I used to select the message in the first place.

I've cleared my cache and my cookies, disabled all my add-ons and extensions, and checked multiple times for viruses with different programs. I have JavaScript enabled. This happens on both my laptop and my desktop (both with Win7Pro), but things work fine on my iPhone and the computers at work.

If I use the mobile mail interface on my computer it works fine, so I do believe it's the Yahoo Mail program or interface, not my machine, or there's a communication problem. When I try to change my settings (the little gear symbol in the upper right), I get a "loading" sign of a turning wheel, but they never load. If I try to move a message, the files (places where I could move the message) don't actually load up as options, and it just says "Loading" perpetually.

It's almost like the interface is stuck in a loop and never fully loading, or something. What can I do, other than switching to gmail?

Watch flash movies on my iPhone 4?

I watch videos on a website called megashare.info on my laptop and I want to watch them on my phone too but when I click on a movie it just has a blank screen and I think I need a flash or something. Is there anyway I can watch movies on this website on my iPhone?

I really messed up my IPhone?

My friend was nice enough to install the ISO7 beta on my iphone 5.It was working perfectly until I charged it on my cousins laptop for a few minutes and when I returned it said that I needed to re register as a beta tester. So for a few days I wasn't able to use my phone at all. Today he finally helped me fix it. He backed up my old information from the last time I was at his house and it was working fine but to back it up he had to take off find my iphone & one thing led to another he had to delete my old Icloud account. This didn't effect the Ipad we have connected with Icloud but it had my sisters Iphone 5 required to be backed up again. Well unfortunately she has never backed up her Iphone into our computer… So I thought maybe we could connect to her account of Icloud and get all her stuff back but for some reason it gave her all my old information from when I backed up my Iphone about 4 months ago? We can't find her account and she's lost everything so any help at all would be greatly appreciated. I probably did something really stupid but I'm terrible with these types of things.