Does the default system font look too small or too large? Do you want to globally change text size?
This app allows you to scale system font size from 40% (smaller) to 180% (bigger).
★ working for Android 2.1 or above devices (Include 4.2+)
★ scale system font size from 40% to 180%
★ preview the scaled text before applying
★ Can modify the font size of the SD card
Now supports Android 4.2+ but only for rooted devices!
It may not work for all devices. Please try it and let me know if it does not work on your device.