Why T-Mobile sim does not work in India on Oneplus 2 ?

arp551

    I traveled to India earlier in the year with my Oneplus2 and t-mobile sim. However, I was not able connect to any of the regional networks. I tried changing bands, connect to a network manually, nothing worked.I even contacted t-mobile but that went nowhere. I have to travel again now, is there any way to get the t-mobile sim to work with my oneplus2 in India ?

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