I got successfully installed Khmer Unicode on my Galaxy S2 (Android 2.3.6) without rooting system but Khmer character is not well rendering that needs a bit more patient to wait for Android upgrade.




Phone Spec. & Font Setting
UPDATED: 21/05/21

Below solution is applied for Android version GingerBread (2.3.x) only
Android ICS (4.0.3) has problem with Khmer Unicode, see here
To apply for Android 2.3.x:



Here is what I did by following the instruction from KhmerType blog:

Enable “unknown sources” installation (via Setting->Application)
Install Khmer.apk
Change font style
Settings > Display > Screen display > Font style
Choose Khmer
Restart the phone
Testing: Go to this website page: http://khnews.info/testing.html
To write Khmer, download Khmer keyboard from Android Market: Phum Keyboard or MultiLing Keyboard
To enable input keyboard:
Settings > Languages and keyboard > Select input method
Choose: Phum Keyboard (in my case)
After you should be able to see everything in Khmer even though the rendering is not fine, you can type Khmer Unicode as well.