Thanks for that. You're right, if I just use the phone as a pure wifi device and stick to wifi services I'll be able to do calls on WhatsApp or Skype etc.
if you want to use a app Textme or Talkatone, and you will getting new canadian number for Free from that app,
• Unlimited Call \ SMS \ MMS a Free USA/Canada.
You have a little less than two hours before business hours close for the day so you should recieve a message from customer support within the hour. Even so they also sometimes respond after hours....like I recieved last night.
Keep in mind if you are travelling for more than 10 days that you cannot readd the same add on for at least 24 hours after expiry. You may want to ask the CSA to remove your 1GB data add on so that you can stagger it by a day or two so that you can use it and a voip for calls and text during the 24 hours you have to wait to add a second 10 day US roaming add on.