Pity you missed Redone $10/30gb promo, that's a better deal.Giga's $10 for 10GB plan is back again. I gonna sign up one. I also gave feedback to ask them to support some of the older phones for VoLTE too. Hopefully it can be done soon.
As for VOLTE, don't hold your breath for it.
Unless your phone is from Samsung, Apple or Xiaomi, very unlikely to get it anytime soon.