no services in india

https://community.t-mobile.com/international-33

this area is usually full of answers for international roaming questions.

Hey there @rnp Have you turned on data roaming in the settings of your phone?

We need to know your mobile plan and phone model. ITMT, you should find WiFi and call T-Mobile International Roaming Support at +1-505-998-3793. It's a free call from your T-Mobile phone.