Transfer Audio Files from a PC:

  1. Establish a USB connection between the Android device and PC
  2. On the phone, enable “File transfer” / ‘Media device” at the prompt or from the Notification area
  3. Launch the File Explorer on the computer and locate the audio files on the PC storage
  4. Copy and transfer the desired files to the phone storage, in the “Ringtones” and “Notifications” folders
  5. Once done, eject the phone storage and safely disconnect the phone from the USB port

Change the General Ringtone:

  1. Launch “Settings
  2. Go to “Sound & Notification
  3. Select the desired ringtone and tap “OK
  4. Optionally, you can enable or disable “Also vibrate for calls

Change the Ringtone of a Specific Contact:

NOTE: Custom ringtones cannot be assigned for contacts located on the SIM card or the device’s internal memory.

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

Change the Notification Alert Sound:

  1. Open “Settings
  2. Access “Sound & Notification
  3. Tap “Default notification ringtone
  4. Select the desired notification sound
  5. Tap “OK

See More: Karbonn K9 Smart Eco: Transfer Audio Files and Set Custom Ringtones and Notifications