An alternative to a ring tone for mobile phones is a vibrating Ying Yang Twins ringtones.Utility Consumers' Action Network (UCAN), a non-profit Sade ringtones consumer advocacy organization, filed a complaint with the California Public Utilities Commission (CPUC) against Cingular Wireless for the unauthorized billing of non-communications related charges, such as ring tones.The devices are very popular with some businesses, where they are primarily used to provide Ryan Adams ringtones access to roaming employees.