There's an easier way to get a custom ringtone on your phone without downloading any apps or files to your phone, or connecting it to your computer via USB.
1. On your computer, select the ringtone you want - make sure it's in an MP3 format.
2. Initiate an email, and address it to,
XXXXXXXXXX@VZWPIX.com (The X's being your 10 digit cell phone number)
3. Attach the ringtone to the email and send it. It will come into your phone as a text.
4. When you get the text, tap the message containing the ringtone.
5. Touch and hold the area that surrounds the attachment box.
6. A dialogue box will open with several options - tap, 'Save attachment.' The sound file is then automatically saved to the same
location as the default ringtones. then, just go to 'ringtones' and select it as your ringtone.