November 2013
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Day November 25, 2013

When will there be one billion iOS devices in use?

iOS unit sales crossed over 700 million units last month. That is a significant milestone but the total number of units in use is likely to be lower. My estimate based on device replacement assumptions is that about 500 million are still in use.

The estimated break-down of units sold and in use by device type is shown below:

Screen Shot 2013-11-25 at 11-25-2.59.59 PM