Tap “Phone” on your iPhone’s “Home” screen and tap “Voicemail” to access your voice-mail settings. Tap “Greeting” and select “Default” if you wish to use the default greeting for your voice mails. Click “Custom” if you want to create a personalized greeting, and tap “Record” to say your greeting.
We’re sorry to hear about this, if you can reach out to us on [email protected] with your details we can try to assist you further, however, we would need to confirm if you are able to manually access your voicemail through your phone. We can’t provide assurance or support for third party applications. However, if you encounter issues with manually accessing your voicemail through your phone we can assist with that 🙂

With Visual Voicemail, you can see a list of your messages and choose which ones to listen to or delete. Learn how to set up and transfer your existing voicemail. Create a voicemail password, then tap Done. Enter your password again to confirm it, then tap Done. Select Custom or Default. If you choose Custom, you can record a new greeting. Go to the Phone app, then tap the Voicemail tab. Tap Set Up Now. Enter your password,* then tap done. Record a custom greeting or use the default greeting, then tap Save.
You can connect multi-site Yeastar S-Series VoIP PBX easily by Multisite Interconnect feature.