[Ramenstien]

I have a family account and on our account three of the other lines have upgrades. I was wanting to use one of them. How do I go about doing that? I am wanting to purchase the HTC Inspire 4G from Best Buy Mobile because I saw that they have it for free. But I also want to know, if I just upgrade that phone and then when I get it can I just take the sim card out and put my current sim card in it? I have the unlimited data package on my phone and I don't want to lose it. Any help would be greatly appreciated.

[homescrub]

If your 2nd and 3rd lines have upgrades, they will just use the lines upgrade to your primary line as a replacement phone.

I've done it a few times, and I did it again to get the Inspire. Just be sure that if you use your upgrade, to to be sure they have you on the correct data plan. Most will take off unlimited data, and stick you with the new data rates. So be careful.