I messed up. I used to use YouMail for voicemail. I decided to unsubscribe. For a while now, I've had "Turn on SMS" checked in Hangouts.
This wasn't an issue with YouMail. After unsubscribing from YouMail and reinstalling the Sprint voicemail apk, I was receiving a text message every time someone left me a voicemail. The texts said, "//Android:*@vvm.coremobility.com has sent you a Sprint Voice message. Call 408-970-0000 to listen", followed by a long string of letters and numbers.
When I called the number, the switchboard said, "If you're calling from a phone with SMS capability, press 2. Otherwise press 1". I pressed 2, and the switchboard said, "You will continue to receive SMS on this phone". However, I still received texts instead of my voicemail app notifications.
Turns out, Hangouts was intercepting the messages intended for the voicemail app. Unfortunately, I found that out too late. Guess what I did? This morning, I got frustrated, called the number, and pressed 1 this time. Now the switchboard says it will permanently send me text messages instead of SMS! There are no options during the call to change it back to SMS now that I know to just disable Hangouts.
What do I do to reset Sprint voicemail SMS settings?
I have a Samsung Epic 4G running CM10