If you want to remove any font after installing, you can do it in 2 ways.
METHOD 1:
Download Font Remover and install it to your phone. After that, open the Font Remover and select REMOVE FONT option. REMEMBER to reboot (restart) your phone after removing font.
»DOWNLOAD FONT REMOVER
METHOD 2:
Follow this method, if you are familiar with the system folders. Download and install any file manager from this site (X-plore or FExplorer is recommended). Go to C://System/fonts. Delete the folder with the GDR file in the folder. After that, reboot (restart) your phone.
