Cannot call or receive calls while in the US

[Ahmed0Mostafa]

I have Canada-US plan which should include calls, text, and data for US and Canada.

The data roaming is working as expected while in the US but I am not able to make any calls from my iPhone or receive any calls. I get 'Call failed' immediately upon trying to call any number while in the US although data and roaming (LTE) work fine.

I have tried various things such as toggling the Airplane mode and resetting the phone network settings but the problem is not resolved. 

I suspect something is wrong with my account since as soon as I enter the US, I get what seems to be a full AT&T signal, and data roaming is working. I also received a welcome message from Public Mobile upon my entry to the US which also mentioned that I could buy roaming add-ons if I wanted to. This is confusing because I do have Canada-US plan and my understanding is that I do not need to buy additional roaming add-ons!!?

@CS_Agent

[Flipflops]

I had the same issue with same plan. Go into cellular phone voice and data options. Turn on the VoLTE option.

[PhoneHome8932]

If it still does not work use Whatsapp, Text+ , TextNow or similar app to talk & text on the data connection.

[Phil_Adelphus]

@Ahmed0Mostafa   The welcome message is automatic when you cross the border, it's just to indicate you are now roaming, you don't need to buy an additional add on.

[HALIMACS · Accepted solution]

In order to call in the US, your device must be able to be VoLTE compatible or switch down to the 2G network.

Try manually connecting to the T-Mobile or the AT&T network.

Does any of the above help?

[Chalupa_Batman]

Hey @Ahmed0Mostafa 

Go into your network settings and choose T-Mobile then reboot.  It should work just fine after that.