The profile that you select in the Sound and Alert Profiles application defines how your BlackBerry smartphone alerts you of phone calls, messages, reminders, and browser content.
Your smartphone has a Normal profile and five other preloaded profiles: Loud, Medium, Vibrate Only, Silent, and Phone Calls Only. By default, some of the settings in the preloaded profiles are based on the settings in the Normal profile. For example, when you change the ring tone in the Normal profile, the ring tone in the Loud profile, Medium profile, and Phone Calls Only profile is automatically updated. If you don't want specific settings for a preloaded profile to update automatically when you change the corresponding setting in the Normal profile, you can manually change the settings in that preloaded profile.