Ok...here is a link to the AT&T Help website which confirms that the new S8 and S8+ do not come with the old blue visual voicemail app native on the phone. There is a substitute now from the dialing pad...bottom left corner...and new voicemails are indicated in the notification panel. That confirms it. We no longer have that great app. But it sounds like some people transfered over the app from their S7 and it is still working...which is great. I guess this subject is now fully answered. Here is the link...
https://forums.androidcentral.com/e...Samsung%26model%3DSamsungG950U&token=659IUm4j
When a new voicemail is received, the Voicemail icon will appear in the Notification bar.
Select the Phone app from the home screen.
Note: To access Visual Voicemail, you must have already Set Up Voicemail. Alternatively, you can check your voicemail messages by selecting the Phone icon from the home screen > select and hold the 1 key > if prompted, enter your voicemail password > follow the prompts to listen to your messages. If you have forgotten your existing voicemail password, you will not be able to access voicemail until you reset your voicemail password.
Select the Visual Voicemail icon.
LISTEN TO VOICEMAIL: Select the desired voicemail.
ACCESS VOICEMAIL OPTIONS: Select the corresponding icon.
Select the Menu icon for more voicemail features such as Send text, Share, Save, and Export to file.
Note: View Access voicemail messages for tips to manage your voicemail. Go to Troubleshoot Voicemail for solutions to common voicemail problems.