no outgoing calls - E 2015 Q&A, Help & Troubleshooting

Hello,
I have a strange thing happening. About a week ago my T-Mobile digits sim card would no longer make outgoing calls in my Moto E (surnia). It was on Lineage OS 14.1. It will receive calls and texts and the data works, just no outgoing calls, the calls just end right after they start.
I've now put the latest Lineage (unofficial) 16 on it and it still doesn't make outgoing calls.
Talked with T-Mobile, they had me swap the sim into a different phone (I should have thought of that), and the sim works fine in a Pixel 2 and Nexus 5X, but it does not work (no outgoing calls) in a Nexus 5 and a Sony Xperia X compact.
So seems totally strange that the sim works in some phones and not others, and the Sony is totally stock and doesn't work.
Any thoughts?

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