Open a book and tap the top of the screen to bring up the menu. Tap the Settings gear to bring up the Quick Settings toolbar.

In real estate, location is everything, and the bottom corners of the iPhone lock screen are the prime spots, each an easy ...

You can also choose Custom to mix and match color themes. For example, you can put the Start Menu and taskbar in dark mode, but keep default apps under the default light theme. Toggling ...