I believe it's etched in the metal, so you can't remove it. There was a person in the VZW forums that asked the same question, and they concluded that you're stuck with the godaweful logos, lol.
I don't mind ATT's branding on their new phones. Just the small ATT logo isn't too intrusive. Of course I would prefer the no branding at all that Sprint is doing on all their phones and Tmobile is doing on some of their phones, but if it has to be there I would take ATT's approach to device branding any day over Verizon's terrible branding. They plaster their giant logo + 4G LTE like that is a feature anymore on every phone.
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