I'm not sure that phones fit into this paradigm very well. First, having a phone is almost a necessity. Note that I did not say smartphone, but having a device that receives calls and texts is something that nearly every functioning adult will have.

Secondly, many people treat their phone more as a lease than an outright purchase. Carriers provide a ton of options to upgrade your phone regularly that could easily cause low-use users to habitually upgrade every 2 years or so.

Lastly, Apple phones in particular seem to be seen as a luxury. Luxury sales aren't necessarily tied to frequency of use. For example, I have a set of name brand golf clubs that I touch maybe 5 times a summer.

I am definitely not saying that you are wrong, but there are a lot of compounding factors to this. Phones are a fairly unique market.