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Vodafone Finds Brits Keep Mobile Phones for 4 Years Instead of 2
(www.ispreview.co.uk)
This is a most excellent place for technology news and articles.
What's funny is that the camera on the Pixel isn't a hardware thing. It's mostly the post processing software that Google uses. So even that doesn't require upgrading to a new phone that often, since the hardware isn't as important as it once was.