Comments on: How to Unlock the iPhone 3G

By: saul

saul — Thu, 05 Feb 2009 18:00:27 +0000

can you give me step by step instructions on how to unlock the ipone 3g to use for t-mobile?

thaks

By: Chris Thompson

Chris Thompson — Mon, 12 Jan 2009 06:27:14 +0000

@terry – My bad, I was thinking Alltel was GSM.

By: terry

terry — Mon, 12 Jan 2009 03:45:21 +0000

it won’t work on alltel either it’s a cdma network ALSO!!!

atleast do your homework!

By: Joe L

Joe L — Mon, 05 Jan 2009 01:03:43 +0000

Thanks for the input fellas.

By: Chris Thompson

Chris Thompson — Sun, 04 Jan 2009 16:41:58 +0000

For the record, The iPhone is a GSM device and works only on GSM networks, which in the US are AT&T, T-Mobile and Alltel, with a bunch of smaller regional carriers like Cincinnati Bell Wireless piggybacking.

Sprint and Verizon both use a technology called CDMA as it’s protocol between the phone and the tower, and it’s 100% incompatible with GSM.

Unlocking the baseband of an iPhone will let you use it on T-Mo, but not Sprint and Verizon.

By: Ryan

Ryan — Sun, 04 Jan 2009 11:24:35 +0000

FYI it will not work on Verizon or Sprint because those are CDMA networks. This is a GSM sim card unlock.