I'm not a current GOS user, and I'm just delving into all this, so forgive me if I'm missing something. I hope I am.
I use Verizon as a carrier. At the end of this year, they are discontinuing 4G that does not support HD Voice (i.e., Non-VoLTE). (source)
From what I understand, VoLTE doesn't work on GOS? If that is true, does that mean that GOS will no longer work on Verizon after this year?