Voice Centric LTE modems are not connecting to AT&T network as Data Centric after firmware upgrade 8.4.0.3

[v4v]

AT&T is showing our Digi WR31s are not connected Data Centric, but voice centric, even after firmware upgrade to 8.4.0.3

[mvut]

I would suggest contacting Digi Technical Support about this issue directly https://my.digi.com/sca-dev-2020-1/checkout.ssp?is=login&login=T&whence=&origin=customercenter#login-register