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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.
I generally upgrade every 4 years too these days, at least the last few times and for the next upgrade. Let's see if I can remember my whole phone list.
Wonder if I missed any that were that forgettable?
Generally an upgrade outside of 4 years was because there was a feature I particularly wanted or needed. On early phones this was quite often (think SMS support, WAP, EFR, GPRS). But then contracts were generally for 1 year so it didn't matter too much. Later phones it's been 3G/4G/5G/Wifi calling etc that generally drove upgrades.