iOS 26 update - incoming / outgoing calls have stopped working on 16 pro

iOS 26 Cellular doesn't work after update on 16 pro

Hello,

I updated my iPhone 16 Pro to iOS 26 day before yesterday, and incoming / outgoing calls on cellular network of specific company is not working. tried all options from phone restart, shifting into airplane mode to back, network settings reset, changing from eSIM to physical SIM, shifting physical SIM within sim tray etc, but glitch still exists. Which shows no signal strength on top right corner of the cell. Please advice solution

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