Understanding Your Phone 193. Back Cover Lock: allows you lock your back cover foran air-tight seal.4. External speaker: allows you to hear when theSpeakerphone is turned on.5. Camera lens: is used to take pictures and shoot videos.Display LayoutYour display screen provides a wealth of information aboutthe phone’s status and options, as well as providing accessto application icons. For more information, refer to“FrontView of Your Phone” on page 16.Primary ShortcutsThere are four non-movable Application Shortcuts thatappear at the bottom of all Home screens. The defaultshortcuts are:• Phone for dialing a number.• Contacts for accessing your Address book.• Messaging for creating and viewing Messages.• Browser for surfing the Internet.• Apps for accessing the applications on your phone.You can change the Phone, Contacts, Messaging, andBrowser application shortcuts to any icon that is displayed inthe Apps menu.For more information, refer to“Adding and RemovingPrimary Shortcuts” on page 35.Indicator IconsThis list identifies the symbols you’ll see on your phone’sdisplay and Indicator area:Displays your current signal strength. The greaterthe number of bars, the stronger the signal.Indicates that the Airplane Mode is active. Youcannot send or receive any calls or access onlineinformation.Displays when there is no SIM card in the phone.Displays when there is no network available.Displays when there is a system error or alert.Displays when a call is in progress.