How often should I upgrade?
Kinda like the oil in your car, I would say "TBD".
The old adage "every 3 months, or three thousand miles" is a good one, but not necessarily a maxim.
Manufacturers often recommend 'every 5-7K miles'.
I know a guy that shared a story detailing a friend that stated "last I changed the oil was 100,000 miles ago" . . . I believe that there was an additional story involving the oil cap, and a saddened *pfffft*
Edmunds dot com inserts some sanity into the dilemma, by positing that the answer depends more upon usage patterns than anything else.
I religiously change the oil in my car 2-3K Km, but that's because I am merely obsessive; not compulsive.
There is no law stating that anyone
should adhere to one stance, than another.
Truly, it would probably benefit me if I were to change the oil every month.
I find no need.
My Daily phone was produced four years ago, and it is Fine.
I find no need to update.
You may find that you do.
Just be aware: if you're upping to the latest iPhone, "how often" is reduced to--at minimum--"every year"
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