UK and US smartphone markets in steep decline

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This article looks a bit dodgy to me. It claims that 7.3 million smart phones were sold in the UK in Q4 of 2018. This doesn't seem reasonable to me. The UK is in the region of 67m people, which would suggest that more than 10% of people bought a new phone in the last quarter of the year. Seems unlikely to me; possible, but unlikely.