I am considering buying a signal repeater/booster to allow us to get signal throughout the house. We can get 1-3 bars in various spots around the house and yard. My wife and I are Koodo subscribers but we would like to improve cell signal for visitors as well. So, assuming that the repeater will work for us, do we need to register the device with Koodo for it to work? Or, do we just plug it in, aim it, and expect better signal for any device regardless of carrier?