My cell service here in the States is Republic wireless. It is a hybird connection. It is supposed to be connected via wifi most of the times for calls. When you are not using wifi the phone kicks over to Sprint. I have used it several times out of the US. If I am at a wifi hot spot and someone calls my US number the phone will ring where ever I am at. This cell service is a flat rate of $22 per month, no other charges. Same for calling to the US. I just dial the US number ( with area code if needed) . Also since this is a smart phone I can call So. America or other places using Viber, Whats App etc with no additional charges.

SXM??? Wendell