Questions about Xiaomi Mi

Hi, The noise canceling is not managed by the device it's connected to, so it the headphones are working, the noise canceling will work. It's only my opinion.

If the problem also occurs with other headphones, it is probably due to the mobile phone, in which case I would contact Samsung support. If the problem only occurs with these headphones, and if I understand you correctly that they have previously worked with this phone, I would advise you to file a warranty claim in your account.