Hi Jim, Thanks for your inquiry and we apologize for your inconvenience.
For your questions regarding Wi-Fi calling, we suggest you reach out to your service provider for further assistance.
If you have additional questions or concerns please contact us again. You can also reach out to us via twitter or facebook for quicker responses.
Thank you and have a great day!
Samsung Mobile Support is now available on Twitter & Facebook!
Chat Support: http://goo.gl/ZALJm