1. Root your phone. (will void your warranty)
2. Download Root Explorer or similar app for root accessing root files.
3. Download '
DroidSansFallback.ttf.zip' attached file to your sd card.
5. Open fx explorer and locate your file,exract it, copy the font, go to /System/Fonts, then replace {backup this original file to sd card} already existing DroidSansFallback.ttf with the copied file. make sure you click on Lock Icon(in top right corner} before you paste font in fonts directory.
6. 'Permissions' should be rw-r-r.(to easily see this,change the view to list}
otherwise long click on copied file,select permissions.
7.exit the app.
8.immediately Reboot your phone and enjoy