Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
This will only work on a 4S that was provisioned for a GSM network. Like AT&T etc. the Verizon and sprint versions (even though they have a gsm radio and sim slot) will not be unlocked or activated with this sim unlock.

Am I correct in this statement?

I hope so cuz I gave up trying to use a sprint 4s with my att sim. As it was said it wasn't possible.
 
I'm using my GPP SIM with an AT&T iPhone 4S. I think only GSM iPhone 4S can be unlocked.
 
works only with at&t phones. I got mine in the mail today and it works :) $20 on ebay. bummer there isn't a way to preserve baseband for 4s yet
 
works only with at&t phones. I got mine in the mail today and it works :) $20 on ebay. bummer there isn't a way to preserve baseband for 4s yet

I think it works with all GSM iPhone 4S, not just AT&T locked units. For other carriers, you need to 'program' the GPP.
 
Working on my 4S. But facetime and imessage is trying to get activated on the old number.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.