If the major objective is to drive customers into your stores, a store locator link and click to call function are key.

FORBES: Steve Madden on Mobile Commerce

To request access to contact data, call theABAddressBookRequestAccessWithCompletion function after calling the ABAddressBookCreateWithOptions function.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

For Address Book, call the ABAddressBookGetAuthorizationStatus function.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

Much of the growth can be credited to Nextel's push-to-talk service, the walkie-talkie-like function that allows users to page and call friends instantly with a single button.

FORBES: Nextel Presses 'Push-To-Grow' Button

Call me crazy but leaders cannot function on a global scale if they worry about every single tiny detail in the business.

FORBES: The Balance Between Leadership and Accountability

Canvas Talk is a function that can send texts or images even during a voice call.

ENGADGET: Pantech Vega R3 packs Snapdragon S4 Pro, 5.3-inch screen into one hand

The function strip is again removable, with another four macro keys to call its own, while the numpad can join you either on the left or right side of the main board.

ENGADGET: Mad Catz S.T.R.I.K.E. 7 gaming keyboard announced at Gamescom (hands-on)

Users can easily call up or switch between functions assigned to the Fn (Function) button and control ring and change setting values as needed, allowing them to quickly set up their preferred style.

ENGADGET: Olympus unveils Stylus XZ-10 with f/1.8-2.7 zoom, smartphone sharing app

Often it is a function of runway, family scenarios and other external factors that allow them to find their way to success, or call it a day earlier on.

FORBES: Can Entrepreneurship Be Learned?