My iPhone 6 Plus zoom seems to be proving me wrong.
I always thought digital zoom was useless when taking a digital photo.
The flowers on this Crassula are tiny.
I was really surprised by the shot below of these miniature flowers, taken at maximum magnification of my iPhone 6 Plus zoom. The zoom is easy to use. You just pinch out with two fingers. The amount of zoom is shown on a slider as well as on the screen.
This phone does have the advantage of image stabilisation. Nevertheless, when taking an iPhone 6 Plus zoom shot, do hold the phone as steady as you can.