Sprint has started to offer Samsung's Instinct, which seeks to trump the iPhone with a higher download speed, better video, picture messaging, navigation and applications, plus a battery that can be removed.

ECONOMIST: The competition this time will be a lot stiffer

The top picture incorporates shots from the rover's black-and-white navigation cameras that have subsequently been coloured.

BBC: Mars rover finally looks set to drill

The navigation menu has moved from the top-center position to the space on the left column right below your profile picture.

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