[wireman]

Hello all, I wish to change my phone from a 3g to 3gs. Can I just put my 3g sim card into the 3gs and be working?

[Garz]

yes. Its the same SIM card and data plan

[snakes2003g]

you will haveever have to call and tell them you put yor sim card in a new 3GS so they can update the imei on your account.

[Garz]

you will haveever have to call and tell them you put yor sim card in a new 3GS so they can update the imei on your account.

you only need to give IMEI when your are newly activating a data plan. You can still call and give it to them but it will work fine without calling them

[snakes2003g]

oh i thought they would have to cause that is what my firend had to do when i sold him my old 3G which makes sense cause he did not have a data plan before getting the iphone.

[wireman]

What would someone that buys my 3g have to do if they have no sim card nor data plan?

[rdiddy_25]

@ wireman

If they already have AT&T, then they just need to insert their sim into the iPhone and call AT&T to update imei and add the data plan. If they are starting new service then best bet is to set up new acct @ an AT&T store and they'll do the rest. Good luck