Hello all,My brother and I have two Xperia 1 V s. One is an Asian version (XQ-DQ72) and one is european (XQ-DQ54). In both cases I flashed stock firmware onto them and swapped the modem for the USA/North American version (XQ-DQ62). On both devices, I was able to get VoWifi (Voice over Wifi), VoLTE (Voice over LTE) provisioned with IMS, first on stock firmware then on lineage. I utilized the Pixel IMS method for this and it worked wonderfully. However, regardless of stock firmware and...Read more