The debate on whether ‘peak iPhone‘ is a temporary glitch or a longer-term problem continues, with Deutsche Bank analyst Sherri Scribner arguing the case for the latter view. Business Insider posted a graph suggesting that Apple’s year-on-year growth not only tracks that of the overall smartphone market – which is on a steady decline toward zero – but actually underperforms the market as a whole.

My personal view is that the correlation between the two lines is decent but far from perfect, and there are enough variables in the mix to make extrapolating that blue line a dangerous business.

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