Transfer Audio Files from a Windows PC:

1. Connect the LG G3 Vigor to your computer via USB
2. If / When prompted, tap "Media sync (MTP)". If there's no pop-up, swipe the "Notification" bar down and tap the option from there
3. In the AutoPlay window on the computer, click "Open device to view files using Windows Explorer"
4. Open a second Windows Explorer window an navigate to where the desired audio files are stored on your PC
5. Copy the audio files and transfer them to your phone. NOTE: Copy the files in the "Ringtones", "Notification", "Music" folders etc.
6. Once the transfer is done, click the "Safely Remove Hardware" icon in the system tray
7. Click "Safely Remove Mass Storage Device"
8. Press "OK" and safely disconnect your handset from the computer

Changing the Phone Ringtone:

1. Make sure the desired audio files have been transferred in the "Ringtones" folder
2. From the home screen, tap "Apps"
3. Tap "Settings" > "Sound"
4. Under "Ringtone & Notifications", tap "Phone ringtone"
5. Select the ringtone you wish to set. NOTE: newly added audio files in the "Ringtones" folder will be listed under "My Ringtones"

Changing the Ringtone for a Specific Contact:

1. Open the "Contacts" application
2. Select the contact you want to set a custom ringtone to
3. Tap the "Edit" button
4. Tap the "Ringtone" drop-down menu and select a ringtone from the list
5. Tap "OK"
6. When ready, tap "Save" to apply the new ringtone

Changing the Notification Sound:

1. Make sure the audio files you wish to use for notifications have been transferred in the "Notifications" folder
2. Tap "Apps" while viewing the home screen
3. Tap "Settings" and go to "Sound"
4. Scroll down to "System" and tap "Notification sound"
5. Select the audio file you wish to use for notifications. NOTE: Audio files transferred in the "Notifications" folder will be listed under "My Notifications"
6. In case the notification sound is grayed out and can't be changed, you need to switch the "Sound Profile" from "Silent" to "Sound"