At&t Note20 Ultra unlcoked on T-mobile help

Samsung Galaxy Note 20 & Note 20 Ultra
I have my at&t note 20 ultra unlocked but have mt T-mobile sim and only internet works! Help. I cannot receive calls or texts- i pop ina Verizon sim and everything works. So I confirm its unlocked. Only with my tmobile sim. Tried apn settings and settings reset and factory reset.
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