Will the SIM from my 3G work in the 4?

[jrm27]

Hi!

So, I've been limping along on my 3G waiting for the 4 to come out. I'm stoked to get a new phone and this should really be a nice upgrade for me.

Question though... will the sim from my 3g work in the 4? For example, if I pick up my new iphone on the 24th will my phone leave the store ready to go with all the info from my 3G? Or will I need to go home and sync it with itunes before I get all my phone numbers loaded in and such? Thanks!

 

[Zaft]

iPhone 4 uses Micro sim which is smaller then the old sim cards. So your old 3g sim will not work. Like you mentioned you just sync your info at home.

 

[iMrNiceGuy0023]

you will get a new Micro Sim, your old sim will be de activated from your number..

numbers are saved to the iPhone, backup your old phone, restore onto your new phone

 

[gceo]

You will have to sync.

Did mine last night. Needed a restore too (as others have also reported).