Transfer Audio Files from a Windows Computer:

1. Connect the BLU S1 to your computer via USB
2. Enable “File Transfer” / “Media device” at the prompt or from the notification area
3. Launch the File Explorer on the computer
4. Locate the desired audio files on the computer storage
5. Copy and transfer the files on the phone storage, preferably in the “Media” directory
6. After the transfer is done, eject the phone storage via system tray and safely disconnect the phone from the USB port

Change the General Ringtone:

1. Open “Settings”
2. Scroll to “Device”
3. Tap “Sound & Notification”
4. Select the desired ringtone
5. Tap “OK”
6. Optionally, turn “Also vibrate for calls” On or Off

Change a Specific Contact’s Ringtone:

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

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

Change the Notification Alert Sound:

1. Launch “Settings”
2. Scroll to “Device”
3. Tap “Sound & Notification”
4. Tap “Default notification ringtones”
5. Select the desired notification sound and tap “OK” to confirm