Really depends on how carriers choose to meter usage -- without knowing anything else about VoLTE, my guess is that voice data won't count against your cap, sim

Really depends on how carriers choose to meter usage -- without knowing anything else about VoLTE, my guess is that voice data won't count against your cap, similar to how data from $CableCo_Video_Streaming_Service doesn't count against your cap. Yes, this is Net Neutrality fodder.