Don't mistake Apple's market share for its installed baseThe top chart makes for exciting headlines. The bottom chart is the one that matters.
<p>FORTUNE -- For investors who missed Charles Arthur's useful primer in
The Guardian on the difference between market share and installed base, the charts he published Thursday make the point even more succinctly.</p>
<p>The top chart, created from the U.S. smartphone sales data that Kantar publishes, is the stuff of tech headlines -- the horserace in which Apple's
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Don't mistake Apple's market share for its installed base
