Hello! My name is Mostafa, and I will try my best to assist you with this so that you find a satisfactory solution.
I’m sorry that you are experiencing this issue. This feature is limited to some devices. You can check the below link. This is due to a partnership between Microsoft and supported Devices.
Supported devices for Phone Link app experiences
https://support.microsoft.com/en-us/topic/suppo...
I hope this help, reach out to me if you have more questions, and I will be happy to help and try my best to resolve your issue. Thank you.
Best,
Mostafa