When my iPhone 4 arrives...can I just swap SIM card from my 3G model?

iphonesrq said:

Do I have to use iTunes to set up new iPhone 4G or can I just put the SIM card from my iPhone 3G?

thank you

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No. The iphone 4 uses a micro sim so the sim from the older iphones won't work. There should be a sim in the new phone for you ready to go though... the old sim will self destruct upon activating the new one

Use iTunes to activate the i4. The SIM from your 3G won't work in it because it's not a micro-sim.

as everyone else said, diff. SIMs. but - you can call 611 from your old phone, and it should prompt you to activate your new device. Follow the prompt and new phone will be activated with new SIM. Very easy and takes 15 seconds.

I believe it is possible to cut your current SIM into microSIM size to use.

Mango Juice said:

I believe it is possible to cut your current SIM into microSIM size to use.

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It is, but what a pain in the butt. If you don't have a microSIM on-hand to use as a guide/template, I've gotta think the chances of getting it right without destroying the SIM being modified are probably pretty slim.