Google introduced Visual Voicemail capabilities to Android 6.0, like iPhone has had for some time now. In order to use it, though, the carrier has to enable it (again, like iPhone). Android 6.0 is features on the new Nexus 5x and Nexus 6P. Future devices are likely to come with Android 6.0, and previous devices running Android 5 are generally upgrading to 6 at some point. I'd really like to see this feature supported in the future, hopefully with the new voicemail system you are implementing. Please consider! This would make android devices much more attractive and useful. Your competitors don't offer this as far as I'm aware, you could be the first!