In short a program for your Mac called CarrierEditor will change your carrier logo from the boring AT&T, Verizon or other carrier to a different logo. The full story can be found at JBN (Jailbreak Nation). The process itself does not require you to jailbreak your iPhone and if you don’t like the logo you can always revert back to the old one. Additionally, should the carrier ever update its ID the process will be reversed. I went with the Apple Logo from the free icons provided. Below is a video tutorial put together by the fine folks over at App Advice for Mac and from iDownload Blog. Enjoy.