Checking your Comcast voicemail allows you to listen to messages left by callers when you were unable to answer your phone. To check your voicemail, you can either call your own phone number and follow the prompts, or you can use the Comcast Xfinity Voice app.
Being able to check your voicemail is important because it allows you to stay connected with callers even when you miss their calls. Voicemail can also be used to screen calls, so you can choose which calls to answer and which to ignore.