How do you change the phone number of your cell phone?

I'm thinking about doing this ';Celltrade'; thing - which is where you take over someones contract and continue on with the phone. Everything becomes yours. Does anyone know if you get new phone numbers on cell phones to fit the new area code? Thanks!How do you change the phone number of your cell phone?
call 611 from your handset...



*note this only works in the good old US of AHow do you change the phone number of your cell phone?
If its possible, I'm you will have to contact your service provider.
yes u can and its ur provider that will do it there may be a charge
coNTACT UR SERVICE PROVIDER



plz add me
u hafe to go your your wireless provider and they can probally change your #