A ringtone  is the sound made by a telephone to indicate an incoming call. The term, however, is most often used to refer to the customizable sounds available on mobile phones. This facility was originally provided so that people would be able to determine when their phone was ringing when in the company of other mobile phone owners.

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A logo is a graphic element, symbol, or icon of a trademark or brand and together with its logotype, which is set in a unique typeface or arranged in a particular way. A typical logo is designed to cause immediate recognition by the viewer.