You can select the app shortcuts you want to appear on the lock
screen in Settings > Personalize > Display tab > Lock screen
shortcuts.
Status and notifications
Status icons
Here’s what each icon means:
Signal strength
Battery is very low (10% or
less remaining)
3G connected Silent mode
3G in use Vibrate mode
4G LTE connected Microphone is mute
4G LTE in use Speakerphone is on
Roaming
Wired microphone headset
connected
Basics 39