Q4 2017 global smartphone sales value spiked thanks to the iPhone X

A couple of early looks at the Q4 2017 global smartphone market indicate the iPhone X sold well and dragged the average selling price up with it.
GfK, which derives its data from point-of-sale terminals, reckons global ASPs experienced a record spike in Q4, growing 11% year-on-year. This trend seems to have been driven mainly by Europe and Asia, with Central and Eastern Europe ASP jumping 28% and Western Europe seeing the average sale value increase by 17% despite a 3% decline in sales volume.
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