What To Do If Your Mom Gives You A Cellphone That Isnt Iphone But You Wanted An Iphone 3gs

Okay I'm watching tv and counting if I have enough money to buy the new iphone 3g s and all of a sudden my mom says here is your new phone. It isn't actually new cause she used it for a while.I didn't want to hurt her feelings so I didn't mention the iphone thing.So now I can buy the 3g s.But then again should I use the used phone.