Surprise International Call Charge with Travel Pass - Tip

[NetDoc]

I recently went on a trip to the UK and used Travel Pass every day.  I understood that there would be NO charges other than the daily pass unless I called another international country (which I didn't.  When I got home, I had three calls for $40 total in the middle of my trip that originated in my home town on a land line!  Obviously, that was impossible as I was in the UK.  I called Verizon Customer Service and they figured it out right away, and took off the charges.  Can you figure out what happened?  Partial answer below.

Answer:

On these three occasions, I had turned on a home-based VPN for some web browsing and didn't turn it off before the call.  As a result, Verizon thought that I was making a call from the US.   This isn't the complete answer though, because the bill said that the call was from a US-based landline!  I do have wi-fi calling turned on, but a wi-fi call shouldn't result in charges at all.  So, I don't have a complete answer, but I can recommend that you turn OFF your VPN before making calls while traveling internationally, especially if you have wifi calling assist turned on.