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Old Nov 1, 2014 | 1:38 pm
  #20  
s0ssos
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Originally Posted by nas6034
This could explain it: http://www.t-mobile.com/offer/free-i...uncarrier.html

Essentially tmobile has a partnership with gogo where you can text from your phone using your cell phone number and not some third party app such as whatsapp.
It is deeper than that. Tmobile enables cellular service over wifi, whereas other carriers don't. For example, you can use wifi to make a call on some Tmobile devices. You cannot do that on any other carrier.
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