Why some Android ROM doesn't have font style option?

[Android Central Question]

My phone doesn't have option to change system font. while many phones have this option why only some phones doesn't have this option?
How can i enable that feature without using a third party app?

 

[B. Diddy]

Welcome to Android Central! It's dependent on the manufacturer's firmware. If the phone doesn't support it natively, you typically have to root the device to be able to change the system font.