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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.
With capacitative buttons and on-screen buttons, there are times where I hit them on accident, which is annoying. The little bit of extra force you need for physical buttons makes this much less likely. I also don't like when on-screen buttons are hidden, and I am worried that I would trigger gestures on accident.