Windows Phone update has safe-driving mode, support for larger HD devices

The layout for larger phones also will change. Phones may now sport a third column of tiles, for instance. Contact lists and other features will be able to fit in more information. That’s a contrast to Android, where text and images simply get bigger with larger screens, without actually fitting in more content.

Microsoft’s Windows Phone software holds a distant third place behind Apple’s iOS and Google’s Android, with a worldwide market share of 3.7 percent in the second quarter, according to research firm IDC. But shipments of Windows Phone devices grew 78 percent to 8.7 million in the April-to-June period, compared with the same time a year ago. The tile-based layout in Windows Phone is the inspiration for the Windows 8 software powering tablets and personal computers.

There are a few ways Microsoft Corp. will catch up to the iPhone and Android phones with the new update.

For the first time, Windows phones will have a rotation lock function, so that the screen won’t switch back and forth between horizontal and vertical mode while you’re curled up in bed. There also will be a central way to close open apps. Before, you had to go into each open app and press and hold the back button.

And Microsoft is launching a program to give app developers early access to the new software. Apple has had a similar program for the iOS software behind iPhones and iPads, while Google often has worked with selected developers on unreleased features.