What if I got a phone from family plan?

If I have a plan from at&t, can I get a phone from tmobile and use that phone on my plan?

Can at@t family plan call other people who have at@t for free?

I want to get a family plan with verizon for me and my 3 friends when we move out but I dont know if you have to be actual fa...

Ok, so I'm planning on switching from T-mobile to At&t, I don't get the phone features and plan. I'm planning on getting one ...

ok i'm getting a cell phone. what is good plan for a 14 yr old in Alabama (most likey with verizon) Around how much does 700 ...

Is it possible to get a koodo mobile plan for a telus phone?

Who Has A Go phone? Like What Are The Plans Like?

How are they? Im thinking of getting it. Tell me about it :]

O.k my friend Taylor said that she would give her old phone to me(it's a blackberry storm and it's from verizon)but I don't h...

Since I'll be heading off to Alabama this summer, my significant other which is my boyfriend is going to be buying me a new p...