My wife and I both noticed a new “VO LTE1” icon next to the 4G symbol on our phones this morning.
Apparently that’s Voice Over LTE.
Voice over Long-Term Evolution (VoLTE) is an LTE high-speed wireless communication standard for mobile phones and data terminals, including Internet of things (IoT) devices and wearables. VoLTE has up to three times more voice and data capacity than older 3GUMTS and up to six times more than 2GGSM. It uses less bandwidth because VoLTE’s packet headers are smaller than those of unoptimized VoIP/LTE. VoLTE calls are usually charged at the same rate as other calls.Wikipedia
So now you know if you see this icon too. Let’s hope Eir/Gomo aren’t planning on removing 3G support any time soon like Verizon in the US is. Reception can be patchy in many parts of the country.