How to setting?
1. Go to Setting.
2. Chosse Language and input.
3. In Keyboard and input methods. Choose additional Tai Tham Keyboard.
How to use?
1. Go to any app have input field.
2.You can see default keyboard but not Tai Tham Keyboard. And Then slide a top of screen.
3. Choose input method and choose Tai Tham Keyboard.
* If you type you see square alphabet. You should install Tai Tham Font.