It doesn't exist on the SE (nor any other iPhone with a 4-inch display),
because there is no smaller standard iPhone screen size with the same
aspect ratio.
With Display Zoom enabled, on models with a 4.7-inch display, everything
is scaled to behave like a 4-inch display; on models with a 5.5-inch
display, everything is scaled to behave like 4.7-inch display. This
works system wide because all apps are simply told the display is
smaller, and they already support the 4-inch and 4.7-inch displays.
The SE can't use this feature because it would need to scale down to
about a 3.4-inch 16:9 display (narrower than the original iPhone
display), and no apps (nor standard iOS user interface components) are
set up to handle a display of that size.
> There's an accessability setting that can be used to turn on a
> magnifier temporarily, assuming you touch it with twelve fingers and an
> elbow or something like that, but for a quick battery-check it's too
> much fiddling imo.
I tried it before my previous post: three fingers are used to manipulate
the zoom mode: double-tap to turn zoom on or off, or drag with three
fingers to pan around the zoomed display. Seems easy enough.
Changing the zoom factor a bit more fiddly: double-tap with three
fingers and hold, then drag up or down.
> >> Although settings>general>accessability (as I recall) allows you to choose
> >> larger fonts, they never display in the status-bar, and if you do select
> >> larger fonts, half the settings screens have malsized fonts shown. It's
> >> half-assed imo, some things like this need to be implemented
> >> across-the-board but iOS obviously is not designed that way. No drama, I
> >> can always let the thing run down entirely and pitch it into the nearest
> >> lake.
> >
> > For all models, there is also General > Accessibility > Zoom to
> > temporarily magnify the entire screen and pan around it using three
> > fingers. (You can set up an accessibility shortcut to enable/disable
> > zoom by triple-clicking the home button, but read the page about it in
> > Settings first so you know which gestures are used.)
> >
>
> This is one of the touch-screen-interface aspects that nobody in the
> industry has addressed yet; gestures need to be postive, simple, and
> obvious... I saw something now forgotten that wanted four fingers? As if.
The gestures for zoom mode need to be different from standard gestures,
or they would be ambiguous. That rules out anything involving tapping or
dragging with one finger, or two fingers (e.g. used for rotate and
pinch).
--
David Empson
dem...@actrix.gen.nz