• Apple revealed that they have an installed base of 900 million iPhones — the first time the company has revealed that statistic and with iPads and Apple Watches – there were 1.4 billion active iOS devices as of the end of 2018
  • Researchers have found the single most predictive indicator of ‘high-income’ is iPhone ownership (full article) – with almost a 70% correlation for the top-quartile income bracket.

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These highlights are from the source article:

Apples iPhone installed base hits 900 million