Network unlock keys for iPhone 4 on AT&T

[Nawizo]

How can I get a network unlOck key for an iphonE 4 on AT&T. What do I need to do. I am currently in Africa and would like to unlock my phone so that I can enjoy my phone on iOS 5 without having to use a gevey sim or preserve the baseband. Note that I paid full price for my phone and I had someone getnit for me in Texas but he lost the receipt. It's been 4 months . Please help me with what to do

 

[SavMBP15]

AT&T will not unlock it. Only way is JB/unlock.

 

[Applejuiced]

It's not gonna happen.
AT&T doesn't unlock any iPhones locked to their network.

 

[Crystal-RX]

Once you update to Official OS5, current Gevey sim will no longer work and therefore, you will own an expensive iPod touch. So, my recommendation is to hold that off for now until a new unlock exploit coming out whether new version of Gevey or software (I highly doubt this will happen)before you update your phone to OS5.