Can third party purchases trigger another credit check?

harlem_kid

    Dear Community members,

     

    I got approved by the activation team to have my postpaid T-Mobile ONE Plus International (one line). The operator told me that my credit check would allow me to "have 12 lines".

     

    Are there triggers when T-Mobile starts hard inquiriies for my credit again without that I know it?

     

    I was reluctant to buy a movie on Google Play Movies via T-Mobile billing, but I tried once and it worked flawlessly, I just do not want to have inquiries again that I do not know of.

     

    In my understanding, buying a new phone on EIP triggers a new inquiry, but not using third party billing. Is that correct?

     

    I am still new in the US credit score system (12 months of credit history so far).

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