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Thread: Improvements to Tmobile's network
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Old Sep 9, 2014 | 12:48 pm
  #6  
gfunkdave
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Originally Posted by UA Fan

If I buy a Tmo phone and then go elsewhere, can I use the wifi calling?
No, the carrier has to support it. I believe T-mobile's protocol is a standard one called UMA, so any carrier that supports UMA calling should work. In the US, Tmo is the only one.
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