When I made the switch to Ting I did so with the intention of using only Google devices running stock android. When I first got my Nexus 5 in Feb. of 2014, giving up visual voicemail was a sacrifice I was willing to accept considering the amazing value and customer service Ting has provided. Unfortunately, nearly 5 years later, I am still unable to use the visual voicemail feature on my phone. It just seems silly to not have this feature in 2018.
Support for Android's native VVM functionality