But Samsung picked up the slack, revealing that the VoLTE launch in South Korea will be "followed by availability in global LTE markets."
A statement from Samsung's Mobile Communications president JK Shin reads, "We will continue to work to quickly roll out VoLTE enabled products globally, providing the best LTE experience for our customers across the world."
Okay, so that's still pretty vague, but at least it's coming.
Advantages of VoLTE
The adoption of Voice over LTE means call quality is about to drastically improve, finally reaching HD-quality levels wherever 4G LTE is available.
And the upgrade won't require any additional apps or hardware, instead arriving through a simple software update for existing Samsung Galaxy S3 owners.
New Galaxy S3 devices will be equipped for HD Voice over LTE right out of the box, SK Telecom revealed on Tuesday.
With VoLTE, even age-old issues like dropped calls and delayed connections could become a thing of the past.