Mongolian Keyboard is a free keyboard app developed by DLine LLC, specifically designed for Android 9.0 users. This app is categorized under Utilities & Tools, and it supports the Mongolian language with additional characters such as Ö and Ü.

To install, simply go to your phone's Settings, then select Language & Keyboard (Input) and choose "Mongolian Keyboard" to enable it. Once enabled, you can use the keyboard in any text input field, such as Facebook or other messaging apps. You can activate the keyboard by selecting it from the Input Method options or by long pressing the space bar.

Overall, Mongolian Keyboard is a convenient app for users who need to type in Mongolian. With its easy installation and additional characters, it is a great option for those who want to improve their typing experience on their Android device.