This wikiHow teaches you how to remove the voicemail icon from the notification bar of your Android device.
Step

Step 1. Open the device settings menu (“Settings”)
Icon
usually on the home screen or page/app drawer.

Step 2. Swipe the screen and touch Apps
If you don't see the option " Apps ", touch " Applications " and select " Application Manager ”.

Step 3. Swipe the screen and touch Phone

Step 4. Touch Storage

Step 5. Touch Clear Data
A confirmation message will be displayed.

Step 6. Touch OK
The voicemail notification icon will be removed from the notification bar at the top of the screen.