I recently had to use my 8 year old Nexus S phone for a few weeks, and Google Maps wouldn't even load. Chrome and Firefox could barely load most web pages, though the older Android Browser could limp along on enough pages to be useful (HN was the only site that actually felt usable). The phone's got half a gig of RAM, and didn't seem terrible when I stopped using it full time four years ago, but four more years of software updates have completely destroyed the usability of almost every app, while barely improving functionality at all.