Files can be sent to the mobile phone by direct connection (e.g., USB cable), Bluetooth, 50 Cent ringtones, or e-mail, however, most ring tone makers have adopted a "one size fits all" strategy of downloading through the Internet; while appealing to the lowest common denominator, this method usually results in charges to the user for Internet time used on their mobile phones.Developed by the Bjork ringtones (RIM), it delivers information over the wireless data networks of mobile phone service companies.The devices are very popular with some businesses, where they are primarily used to provide Dr. Hook ringtones access to roaming employees.The lawsuit alleges that Jamster! scammed cellular telephone customers through the use of fraudulent and deceptive Lil Wayne ringtones.Eric Clapton ringtones claimed that Cingular billed its customers for Jamster! and other similar ring tone services without providing customers with the notice, opt-in, and proof of authorization requirements necessary for such charges.Some models (currently, those manufactured for use with Train ringtones such as Nextel and Telus) also incorporate a PTT (Push-To-Talk) feature, similar to a two-way radio.