Transfer Audio Files from a PC:

  1. Connect the Android device to the computer via USB
  2. Enable “File Transfer” / “Media device” when prompted or from the Notification area
  3. Open the File Explorer on the computer and locate the audio files on the PC storage
  4. Copy and transfer the desired audio files to the phone storage, preferably in the “Media” directory
  5. After the process completes, eject the phone storage via system tray and safely disconnect the device from the USB port

Change the General Ringtone:

  1. Launch “Settings
  2. Scroll to “Device” and tap “Sound & Notification
  3. Select the desired ringtone
  4. Tap “OK” to confirm
  5. Optionally you can enable or disable “Vibrate for calls

Change a Specific Contact’s Ringtone:

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 contact you want to edit
  3. Tap “Edit” > “Menu” > “Set ringtone
  4. Select the desired ringtone and tap “OK

Change the Notification Alert Sound:

  1. Open “Settings
  2. Access “Device
  3. Tap “Sound & Notification
  4. Go to “Default notification ringtone
  5. Select the desired sound and tap “OK” to confirm

See More: Asus Zenfone 4 Selfie Pro: Transfer and Set Custom Ringtones & Notification Alerts