How to Remove an AT&T Logo on an IPhone
You can remove the AT&T logo from your iPhone and replace it with your own to better show off who you are and what you like. The CustomCarrierLogo tool supports pre-made and custom icons and doesn’t require you to jailbreak your phone so you don’t run the risk of losing the ability to make calls or use apps.
1 Changing Logos
Download and install the CustomCarrierLogo tool (link in Resources) to start the process of ditching the AT&T logo from your iPhone. You’ll need to find your carrier version on the About tab of your iPhone’s Settings menu. If your iPhone lists “AT&T 14,” your carrier version is 14. Open the software and provide it with your carrier version and your iPhone model, then follow its steps to select and save the new logo you want. In iTunes, select the “Restore iPhone” option, click on the logo you saved and then reboot the device. Your iPhone will have a new logo after it restarts.
2 Personalized Icons
You can create your own icons with an image program or download a favorite image off the Web to use. For an iPhone that does not have a Retina display, your logo should be a maximum of 60 pixels by 20 pixels. If your iPhone does have a Retina display, your maximum logo size is 120 pixels by 40 pixels.