1. Manually inserting font file in to the system fonts
Requirements:
- ROOTED phone
- Root File Explorer
- DroidSans.ttf font
Download Package (.zip)
On top of root explorer there will be a button called Mount R/O = read/only .. presss it and changes to R/W = read/write! Now it will allow you to paste the new font with Thaana support and over write the system font. I suggest you make a copy of the original file first, in case anything goes wrong. Replace the font file you downloaded with the existing DroidSansFallback.ttf font in the system fonts folder of your phone. You are done!!!! :)
2. Install thaana font using an android app [Root]
Now there is also an android application which claims to be able to do it for you ;)Get the App HERE