Can I take a iPhone from one contract onto my own?

What I'm wanting to do is get off of my mother's plan and start my own with AT&T. If I already have a phone, would I just have to pay for a contract, or would just cause trouble?

First find out when the contract with your phone number is over. If the contract is over then you could open your own account with the iPhone you have.

If the contract is not over, and you cancel the contract their is a fee to pay. Plus you won't be able to put your current number to the new contract.

  • How to unsync photos from iPhone that were added from a different PC than the one I own? When I went to upgrade my iPhone 4 to the iPhone 5C, the guy at the Sprint store synced all my photos from my old iPhone through a computer at the store, and onto a new album he so cleverly titled "pics". Now, they're just old and taking up tons of space, and I'd really like to get rid of the 350 photos in there. The problem is, I don't know how I would un-sync the photos from my phone since I don't have access to the Sprint store's computer.
  • How to save my OWN YouTube videos onto my iPhone camera roll? Is there a way to save my OWN YouTube videos onto my iPhone camera roll? If not then, is there a way to somehow save the video onto my phone without downloading a bunch of apps that don't work? I'M DESPERATE Please Help
  • How to put my own ringtone onto an iphone 4s? I have an iphone 4s and want to put a particular song as my ringtone. I have attempted to follow some instructions but they seem to miss out essential steps! I then tried the downloads but many then said I had to sign up etc. I only want 1 song, surely Apple know this kind of stuff really puts people off buying another iphone?
  • How to put my own custom ringtones onto my iphone so that it will be my ringtone? Hi, I have the iPhone 4S and I've looked up everything on how to put the ringtones on my iPhone, and so far, none have worked. I have an app that you can customize your own music into ringtones, and I have created one that I really like, and I want it as my ringtone. I did the "click and drag" method to drag it into iTunes, and still no tones or ringtones tab. Can somebody please help me, it's getting really frustrating!