You can customize the lock screen in Settings > Personalize >
Lock screen shortcuts to show your four favorite apps.
Status and notifications
Status icons
Here's what each icon means:
Signal strength
3G connected
3G in use
1xRTT connected
1xRTT in use
Roaming
No signal
Battery is very low (10%
remaining)
Silent mode
Vibrate mode
Microphone is mute
Speakerphone is on
Wired microphone headset
connected
Wired headset connected
Basics
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