Power Savings Mode

Power Savings Mode

This mode turns off all functions except calls, notifications, and messages and shows you a grayscale Home screen. It also disables all Wi-Fi and cellular mobile networks and limits what the watch can do (its features and functions are stripped down.)

To enable or disable Power Saving mode, open the Quick settings panel and tap the Battery icon to turn it on or off.
Or turn on Power Saving mode from Settings > Battery > Power mode > Power Saving.

Source : myhealthyapple.com

Note :
"Power Savings Mode"

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