As far as his accessibility to using the phone is concerned, the dexterity of his fingers and unfamiliarity with touchscreens are far greater barriers than the impact of his ageing eyesight. The lesser scaled resolution usually means there are fewer things visible on screen at once, and the things that do remain are simply bigger. I set my grandpa’s phone to use Zoomed mode primarily because it makes touch targets easier to press. This latter point is frequently the more useful aspect. Text is easier to read, UI elements are easier to touch.
Unlike Dynamic Text, there is no distortion of the relative size of interface elements. The main advantage of Display Zoom is that it applies to the entire screen evenly, enlarging everything uniformly. Display Zoom came to iOS starting with the iPhone 6 but it originated on the Mac the behaviour is identical to the scaled display options in macOS System Preferences, except the iPhone only presents you with one choice of alternate resolution. This means the entire interface is rendered physically larger. It’s also possible to encounter app layouts that are entirely broken with Dynamic Text active, as developers sometimes forget to test every screen of their app under these conditions.ĭisplay Zoom works by making the OS pretend that it is running on a device with a lower resolution screen, causing apps to render at that smaller size, and then scaling that up to fill the actual display of the device. Often, the app will change the text size of a button but the button’s container doesn’t get bigger in kind, so you see a lot of truncated text. When the system font size is increased significantly, this results in a pretty ugly mish-mash of application UIs with some parts of the screen being enlarged whilst other areas don’t change. Due to the limited available space, components like iOS toolbars use fixed metrics and do not change the text size of their buttons at all. With Dynamic Text, the OS uses larger font sizes for body text and some headings. Both accessibility features help people with poor eyesight, but the mechanics are very different.
However, I recommend turning to Display Zoom, and considering adjusting the text size as a last resort. The usual go-to accessibility setting for older people is the text size slider. Display Zoom Reveals New iPhone Resolutionĭisplay Zoom is a truly great feature for those that need it.
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