Why does Digits require data connection for calls when set to use cell minutes for calls?

rayt00

    My Digits is set to use Minutes and Data (Minutes for Calls and data for Texts).  But if there is no data connection, it says "No Network Connection" and will not make or receive calls, even though the native phone app will make and receive calls.   If I have cell data turned off and then turn off WiFi, it deactivates my Digits line.

     

    This is on my Google Fi phone, which might be part of the issue.

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