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Old Oct 21, 2017, 11:11 am
  #1851  
txflyer77
 
Join Date: Mar 2012
Location: Boulder
Programs: AA Plat, CX Silver
Posts: 2,361
Originally Posted by Majuki
I was thinking either the TLD or looking up the IP block. However, I think looking up the IP block is too complicated. I'm curious to see if it's the scenario of connecting to a non-T-Mobile network first. An easy check without incurring charges would be to subscribe to a US based VPN service and do a WiFi call back to the US.

I think the reason T-Mobile did this was to offer the 20 cents/min calling if in a Simple Choice location to those without stateside international plans. That way, people can use the 20 cents/min calling over WiFi too. Before Simple Choice, there was never a distinction between US and international WiFi calling. With the change, T-Mobile broke free international calling for those with international calling plans.
IP geolookup isn't complicated at all. It's not always *accurate*, but it's a very simple thing to do.
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