[microcolonel]

> isn't your primary phone

I'm sure this seems like the only conclusion, if your concept of human being is "those weird animals that spend 100% of their time glued to one or another smartphone". My primary phone is a Nokia 106, and life without Uber, maps, and Spotify on my phone is actually just fine (though I would probably have a smartphone if that was the extent of the deal). It stands by for the better part of a month, and gives me about a day and a half of periodic battery warnings until I think it's time to plug it in.

I don't see any reason why, with today's radio/application chipsets, battery technology, display technology, and sensors, we can't have a reasonably-sized (think iPhone 4S but 5C thick) good quality smartphone which holds a charge for more than just a couple days and can run WhatsApp.