<ul><li>The iPod was introduced in October 2001 as a revolutionary portable music player.</li><li>Wider adoption and market expansion from 2004 to 2007 due to product improvements and price reductions.</li><li>The iPod reached peak popularity and became mainstream from 2008 to 2010, but faced competition from smartphones and streaming services.</li><li>From 2011 onwards, declining sales due to the shift towards smartphones and streaming services, leading to product discontinuations.</li></ul>

iPod Journey.

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