Accessibility options on the iPhone: Zooming in on the display
The Display And Brightness Settings also include a number of controls for enhancing screen visibility, which are separate from the more specialised tools found in the Accessibility settings. The Display Zoom allows you to choose Standard and Zoomed views of screen elements such as icons and buttons, while the text controls can be used to increase the standard size of text and to add a bold effect to the text as well.
However, these text controls only work with apps that have been written to specifically support the 'Dynamic Type' feature that is part of iOS itself. As you'd expect, Apple's own apps support Dynamic Type, so you'll see larger text in Mail, Notes and the other apps that are built into iOS. Unfortunately, there are quite a few apps that don't work with Dynamic Type, which is why Apple includes additional Zoom and magnification features within the Accessibility settings.
Adjusting Alerts: set the volume level for alert
The Wallpaper settings panel is simple enough, just allowing you to change the wallpaper displayed on the background of your Home screen. You can use Apple's ready-made wallpapers, or import your own photos from your Camera Roll or photo-streams, but there are no hidden surprises in there.
The Sounds settings are largely straightforward too, as they mostly just allow you to choose which sounds play whenever your iPhone or iPad receives calls, emails and other messages that need your attention. But there is one useful option in here that people sometimes miss. It used to annoy me that turning down the volume on my iPhone would sometimes cause me to miss messages because I couldn't hear the alert sound properly. Then I realised that you can set the volume level for alert sounds separately from the volume level for playing music or listening to video in other apps.
The Ringer And Alerts setting provides a simple slider control so that you can set the volume level for alert sounds. There's also an option called Change With Buttons. This option is turned on by default and it means that the volume level for alert sounds gets turned up and down along with the volume for everything else when you use the volume buttons on the edge of your iPhone or iPad. But if you turn this option off the volume for alerts remains fixed at the level that you set with the slider, regardless of the volume level used by other apps.
Use TouchID to authorize your purchases
The settings for TouchID and Passcode are actually quite straightforward - which in itself is pretty remarkable when you think about the complex technology that's being used here. However, there are a few options that are worth looking at in a little more detail.
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