Does Ultra mobile sim card works in T-mobile?

madura.chaudhari Nov 27, 2017 8:15 PM
  • Member Since:

    Can I use Ultra mobile sim card in T mobile? Ultra mobile runs on T mobile network. I do not want to change my operator and get this amazing phone.

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    • 2 Replies
    • Latest reply on Jul 7, 2015 1:26 PM by smplyunprdctble

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      • e2k

        Re: Does Ultra mobile sim card works in T-mobile?

        e2k Jul 7, 2015 1:10 PM (in response to madura.chaudhari)
        • Member Since: Jan 7, 2015

        If it uses the same bands (frequencies) as TMO, then the phone will work provided that it is unlocked. If the phone is locked, it will not operate with a different carrier's SIM card.

        • smplyunprdctble

          Re: Does Ultra mobile sim card works in T-mobile?

          smplyunprdctble Jul 7, 2015 1:26 PM (in response to madura.chaudhari)
          • Member Since: Jul 15, 2011

          It's probably based on the agreement between the MVNO Ultra (who I've never heard of, but that means nothing) and T-Mobile.

           

          I can tell you that Walmart Family Mobile plans (powered by T-Mobile) do let locked T-Mobile phones on their network.

           

          I think that's the advantage of StraightTalk as well -- you don't need to be unlocked if you pick the carrier of the phone you have (keyword is think)

           

          So, there's a good chance that if Ultra is a T-Mobile MVNO you don't need it unlocked.  Easiest test?  Find someone with a T-Mobile branded phone that's not unlocked (if they don't understand then it's probably not unlocked) and pup your Ultra SIM in it.  You may even be able to hop into a T-Mobile store and borrow an employee's device to test it.  Especially if you are intent on purchasing a device, they'll probably be more helpful.