on Android, I get both ipv4 & ipv6 addresses automatically assigned when connecting through T-Mobile's mobile data; but on my FLX1s, I'm only getting an ipv4 address, despite setting the "IP Configuration" in the "Mobile Network" settings to ipv6.
I did get an automated message from T-Mobile when I first put the SIM in that said the phone was "incompatible": so it's possible T-Mobile is refusing to assign it an ipv6 address; I also only have 4g (not 5g) connectivity, and maybe they're only doing ipv6 over 5g? I can try enabling different 5g bands and see if that makes any difference.
My home internet/wifi has ipv6, and I get an ipv6 address over wifi on the FLX1s without any problems.
@fakeshell has mentioned that they are working with T-Mobile on 5G integration: https://furilabs.com/forum/flx1/ting-t-mobile-no-data-on-5g/#post-940
I would assume that this issue is related to that
