Samsung Galaxy Note 4 - Manual (Page 102)

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Safety assistance
Emergency mode
Emergency mode changes the screen to grey tones to reduce battery consumption. Some
apps and functions will be restricted.
Activating Emergency Mode
1
On the All apps screen, tap Settings → Safety assistance → Emergency mode and tap
the Emergency mode switch to activate it.
Alternatively, press and hold the Power key, and then tap Emergency mode.
2
Read and agree to the terms and conditions and tap OK.
3
Read the on-screen information and tap Enable.
Add more apps to use.
Make an emergency call.
Remaining battery power and
estimated battery standby time
Turn on the flash.
Make a call. Send your current location
information in a message.
Browse the Internet.
Access additional options.
Sound alarms.
The estimated maximum standby time shows the time remaining before the battery
power runs out if the device is not used. Standby time may vary depending on your
device settings and operating conditions.