BERNIEP52, we know the importance of being able to hear your text alerts. We are here to help.
Here is a link to make sure Text Notifications are turned ON within your phone's settings. It they are off, then you would not see a new message alert or hear when you get one https://www.verizonwireless.com/support/knowledge-base-206586/
Also, you would want to ensure that the phone is not in Do Not Disturb mode as well https://www.verizonwireless.com/support/knowledge-base-205228/
Looking over the Moto Z Droid/ Moto Z Force Droid, we are not seeing anything referred to as a Dot. Can you please provide us with more information on what you mean by a Dot? Usually, when notifications are turned on you would see a number on the Message icon that would indicate an unread message.
One last thing as well to review. If you are using Message+ and have the Message Preview pop up option turned ON, then the Message+ app would not show an unread message.
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