ATTENTION This is not an upgrade
T-MOBILE SPECIFIC IPV6 fixed
NOTE: follow steps in this order, I've tried in different order and failed this is what has worked for me.
Do not follow this post "if it ain't broke"
Maintenance - Restore System
Unplug power from wall (not from unit) -> replug
STEP 1
Under Network (menu)
IPV6
enable NAT6
and Save
Data will briefly disconnect
STEP 2
Under 5G NetWork
APN - IP Type select IPV6/V4 and Save
Do not change APN leave on Auto
go to 5G info make sure ipv4 and ipv6 addresses are displayed
IPV6 will now be working