Carrier unlock
I'm from Bangladesh, I brought a second hand phone from a guy. But the phone is carrier locked. And I don't have any information about the carrier. I have some research and found that the phone is locked to US T-Mobile (Sprint). I contacted then as instructed in a apple support article but the said they can't do anything about this . They told me to contact the Apple service center. But in Bangladesh there's no official Apple service center and also I failed to contact them online. When I try to message them through Apple business in messages App it shows that "This service is not available in your region". The T-Mobile agent told me that Apple could help me in this case as they are the manufacturer. I am expecting some help from apple in this case. I hope they will help me in this case
iPhone XR, iOS 16