The condition : Android is already root and installed busybox
IMPORTANT: before you start it’s wise to backup your data or system.
Download FontChanger from market
Now copy the fonts will be used to folder sdcard /.fontchanger
remember the font format must be *.ttf
After the new font successfully installed, open font changer aplication. You`ll see like this:
Just choose which font you want, click, want to preview or directly apply, reboot now or reboot later
if you want to change the density to choose options -> density, and change numbers as desired, the default 160
when all step is done, apply and reboot the phone
And the Android font is successfully replaced.