Win10 Mobile Preview 10549 update and fixed content Daquan

Microsoft today pushed the Win10 Mobile Preview 10549 Express update to Windows Insider users, but Win10Mobile users need to roll back to WP8.1. This update includes the following updates:

• Improved Cortana: Cortana is now open to Japanese and Australian and Canadian (English) Insiders.
• "Message" application improvement: The message application text input box will expand when you input text. Before, the text input box has only two or three lines, which is not convenient for editing. The Skype feature will also be integrated in the upcoming release.
• More emoji expressions: New Unicode emoticons have been added to this version, and the Unicode standard reflects the diversity of people around the world. This feature has been added to Windows 10 PC Edition 10547.
• Improvements for Lumia1020: Lumia1020 will no longer uninstall the "Lumia Professional Shooting" app when upgrading from WP8.1 to Win10 Mobile, you can continue to use it. Use Lumia Professional Shooting to get the most out of your Lumia1020 camera. Because "Lumia Professional Shooting" is not available in the Win10 app store, if you want to get the app you need to roll back to WP8.1 to install Lumia Professional Shooting.
The following is the repaired content of Win10 Mobile Preview 10549:
• Some applications launch "Windows Camera" when taking photos, the camera application no longer crashes;
• Fixed every touch after sending a message The problem of keyboard exiting is convenient for you to send multiple messages in succession;
• fixes the problem that the notification icon appears at the top of the screen when sliding the delete notification in the operation center;
• Properly preserved issues that cause some social communication applications, such as WeChat, WhatsApp, LINE, Weibo, and QQ, to fail to find screenshots;
• Fixed reinstallation of SD card and could not be installed on SD card Application problem;
• The touch zoom function of the map application has been restored;
• Fixed a problem where a custom ringtone for a contact has a black screen for 10 seconds;
• Alarm mode;
• fixed call barring feature;