For years, Apple has offered the iPhone in the United States only with connection to the AT&T network. Unlock codes don't exist to unlock the phone, but software is available that you run on your PC or Mac and access with a tether between the computer and the phone. Some pay sites offer regular updates so the phone stays tethered even after the iPhone downloads firmware updates.
Instructions
1. Go to the iPhone page at GSM Liberty (see Resources). Their solution is to download software to your PC or Mac that you tether to your iPhone. The site offers a money-back guarantee in case the software doesn't work. There is no mention in the description of promised updates. The site accepts payment by PayPal, in case you don't use a credit card.
2. Go to the Unlock the iPhone site (see Resources). Its product provides lifetime updates so Apple firmware updates don't lock the phone again. The product has a money-back guarantee in case the software doesn't work. The site accepts payment by PayPal and credit cards.
3. Go to the Unlock iPhone22 site (see Resources). Its product provides lifetime updates so Apple firmware updates don't lock the phone again. This product works for the iPhone 3G and 3GS specifically, not earlier versions. The product has a money-back guarantee in case the software doesn't work. The site accepts credit cards and payment by PayPal.
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