You can change the number of rings before voicemail picks up within the app. Under the Account tile, tap Settings. Select Rings before Voicemail and enter the number of rings you'd like before a call is sent to voicemail.
You can change the number of rings before voicemail picks up within the app. Under the Account tile, tap Settings. Select Rings before Voicemail and enter the number of rings you'd like before a call is sent to voicemail.