Motorola Photon Q AT&T HD Voice support?

I have a Motorola Photon Q unlocked and running lineage. It's a 4G LTE phone and yet I'm told that it won't work after the February 22nd 3G sunset because it "doesn't support AT&T HD Voice". This is a requirement that was never mentioned to me before. Previously, all I had been told was it had to be 4G LTE. So, is there a way to make this phone capable of using AT&T HD Voice? Or at the very least trick it into thinking it's capable? I need this to work and I'm running out of time and options.