Samsung SM-A315F User Manual page 21

Basics
Forcing restart
If your device is frozen and unresponsive, press and hold the Side key and the Volume Down
key simultaneously for more than 7 seconds to restart it.
Emergency mode
You can switch the device to emergency mode to reduce battery consumption. Some apps
and functions will be restricted. In emergency mode, you can make an emergency call, send
your current location information to others, sound an emergency alarm, and more.
To activate emergency mode, press and hold the Side key. Alternatively, open the notification
→ Emergency mode.
panel and tap
To deactivate emergency mode, tap → Turn off Emergency mode. Alternatively, press and
hold the Side key, and then tap Emergency mode.
The usage time left shows the time remaining before the battery power runs
out. Usage time left may vary depending on your device settings and operating
conditions.
Volume Down key
Side key
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