If you are looking for a second line on your main phone but don’t want to have the inconvenience of another phone to carry around, weather it be for business, personal or other important use, this app is your absolute best option. I’ve been in the market of using VoIP based solutions for 6 years, having used all, many of them shut down since, but when it comes to features, layout and reliability, this app checked all on the list. - Port # in / out. - Support - Calling, SMS, MMS = Unlimited US/CA - Use Cellular Minutes, WiFi or Cellular Data option. - Call Forwarding - Caller ID, Voicemail - When abroad, Switch to Calls over Cellular / WiFi Data = never be without a working phone line and you remain local to your customers in USA and Canada. The team is wonderful, always prompt with answers and they are working on exciting features from requests I’ve made due to nature of use I have for the service. If you are serious about a second line on your phone as I am, this is the absolute one stop service for you.