Your iPhones display should automatically switch to the StandBy screen within a few seconds.
Apple
The iPhone StandBy screen works both when charging your iPhone wirelessly and with a charging cable.
Heres how to turn off the StandBy screen.

Apple
fire up the prefs app on your iPhone.
Turn the green switch next to StandBy off.
To enable StandBy, simply repeat the above steps and turn the switch on.

How Do I Change StandBy Mode on iOS 17?
Heres how to get it looking the way you want.
Start charging your iPhone and rotate it horizontally to activate StandBy mode.

You’ll be shown a brief welcome message if this is your first time using StandBy.
Select thexin the top-right corner to dismiss the message.
Swipe left or right to view different StandBy screens.

StandBy screens function the same as your iPhones Home screens.
you’re able to add different widgets to each screen and adjust each widget’s appearance.
Swipe up or down to change the style of the widgets on the current screen.

Each iPhone StandBy screen can support one widget on the left and another on the right.
To add or remove a widget, just long press on one side.
To remove a widget from the StandBy screen, select theminusicon.

To add a new StandBy widget, select theplusicon.
SelectAdd Widgetto add the widget to your StandBy screen.
check that to long press on the side of the screen you want to make changes.

What Is the StandBy Display on iOS 17?
The StandBy screen is not an app.
It’s a feature that’s built into the iOS operating system.

Where Is StandBy on iPhone?
Instead, the StandBy function is accessed by placing your iPhone horizontally while charging.
Changing the iPhones rotation or interrupting the charging process will immediately turn off StandBy.

Why Is My iPhone StandBy Screen Red?
StandBy alters the screen when your iPhone senses its in a dark environment.
The result is a dark red tint to all of the widgets.

The StandBy screens Night Mode works independently from theiPhones system-wide Night Mode setting.
It can be turned on or off by following the instructions above.
FAQ
The Apple Watch’s equivalent to the iPhone’s Standby isNightstand Mode.

It activates when the Apple Watch is sideways while charging.
You’ll need at least an iPhone XR to run iOS 17.
Apple generally supports devices for five years with iOS updates.
