I currently have 2 RW lines and 1 Project Fi line. I like RW but have connection issues in the more remote parts of Arizona where I hope to be more and more. It seems like RW and Fi use different carriers and my reception is better with Fi. Does anyone know if that is the case? Is RW looking to work with more carriers? I would like to stay with RW but I need to make a choice and stop paying for 3 phones. Any recommendations on either service?