Froyo

When I was living in Germany (back in the days) – Vodafone Germany used to be the most annoying mobile services provider ever. They basically took any phone they were selling, disassembled the firmware and the OS and rebranded the whole bloody device with their Vodafone corporate red, Vodafone live! and all sorts of other sh*t (yes, I mean it exactly this way). Those branding efforts often used to happen so deeply inside of the device that it was literally impossible to revert them (without sending the phone to dedicated obscure de-branding services in Germany) and Vodafone often locked the devices even people on postpaid contacts.