By eHow Contributing Writer
A ringtone is the sound that plays when the phone rings. Modern ringtones can make the sound we traditionally think of when a phone rings or play snippets from popular songs. The iPhone has a set of ringtones from which you can choose. You can even choose a different ringtone for each caller on your contact list.
Install Ringtones on the iPhone
Select the "Settings" button on your iPhone. The accompanying picture is of several circular gears.
Choose the "Sounds" option from the settings to choose which ringtone you want to use. Choices include "strum," "timba," "blues," "trill" and "old phone."
Decide when you want to hear a ringtone sound--when someone calls you, when you receive voicemail or text messages or when you send or receive email messages. Use the "Ring" button under the "Sounds" menu to check or uncheck each box.
Set your phone to vibrate in addition to or in lieu of using a ringtone. Go to "Sounds" and select "Vibrate."
Use the switch on the side of your iPhone to turn the ringer off and on as desired.
Install Assigned Ringtones for Your Callers
Tap on the "Phone" button on the main menu of your iPhone.
Choose "Contacts" to access your list of contacts.
Pick a contact to whom you would like to assign a specific ringtone.
Touch "Edit" and "Assign ringtone."
Select from the list of ringtones the sound you wish to hear when that person calls you.
Expect to hear the default ringtone whenever you receive a call from someone whom you have not assigned a personalized ringtone.