> Voip.ms
i ported my mobile number to them a week ago hoping to only ever need an LTE, 5G or WiFi data connection for cell service.
alas, i discovered that MMS (and therefore group SMS, too) dont't work through SIP protocol. that's a deal breaker for me, unfortunately. looks like i'll have to port it back out to AT&T, Verizon or T-Mobile :(