Transfer Audio Files from a PC:

  1. Connect the Android phone to the PC via USB
  2. On the phone, enable “File Transfer” / “Media device” when prompted or from the Notification shade
  3. Open the File Explorer on the PC
  4. Copy and transfer the files to the phone storage, in the “Ringtones” and “Notifications” folders
  5. Once the transfer completes, eject the phone storage and safely disconnect the device from the USB cord

Change the General Ringtone:

  1. Open “Settings
  2. Access “Sound & Notification
  3. Select the desired ringtone
  4. Tap “OK” and optionally, turn “Also vibrate for calls” ON or OFF

Change the Ringtone of a Specific Contact:

NOTE: Custom ringtones can’t be set for contacts stored on the SIM card or the phone’s internal memory.

  1. Open “Settings
  2. Tap and hold the desired contact
  3. Tap “Edit” > “Menu” > “Set ringtone
  4. Select the desired ringtone and tap “OK

Change the Notification Alert Sound:

  1. Open “Settings” and access “Sound & Notification
  2. Tap “Default notification ringtone
  3. Select the desired notification ringtone
  4. Press “OK

See More: BLU Grand M2 (2018): Transfer Audio Files from a PC and Set Custom Ringtones & Notifications