T-mobile SIM Card 5G UC Cellular data limits udp data sending

1. The device releases the AP hotspot, and the iPhone connects to the hotspot to send upd data communication.
2. Use the T-mobile SIM card 5G to enable the cellular network to send upd data, but the device cannot receive UPD data. It takes about 1 minute to receive after repeated sending;
3. It is normal for the same program to use China Mobile 5G/4G cellular data or turn off the cellular network;

How to solve the problem that T-mobile SIM card 5G UC cellular data limit udp data sending?