CarrierEditor lets you customize your iOS device’s carrier logo to something completely different. This only applies to devices that support data/phone service. Some carriers may not be supported if they don't use images for their logos (e.g. Sprint CarrierEditor works on any firmware. This means that iPhone 5's as well as iPad LTE's can be used. If your device/carrier is not listed in the drop-down lists of CarrierEditor, it means your device is not compatible.