I need clarifying on sending receiving calls and text while vacationing in Florida. My wife is deaf and needs her phone to text with. I want to be able to text with her from my phone currently connected with KOODO and hers Telus as well back home from family with the possibility of calling . What is needed from both of us so we can communicate with each other and family while in the UNITED STATES keeping in mind both phones activated in Canada and want the cheapest possible solution please. Thanks in advance!!