1. How to switch font in Samsung mobile? Directly switch font is supported for most of the Samsung mobile currently(except mobiles which use native android system such as Galaxy Nexus and some third party system mobiles with CyanogenMod,).If mobile is after root, can use native way to switch font without install; if not root, can select font style to set font when jump to the display setting after install fonts. 2. How to switch font in other mobile? Only can switch font after get root permission, and must restart after switch font. 3. How to restore after font switching failure? Select factory font in the main interface,click OK to restore the factory font. 4. No favor font in the online fonts? You can send font files or name which you want to help@fontcloud.cn,it will be added in the online list after verified. If you have need help,please visit:%1$s Google+: https://plus.google.com/111204971181674728519/posts Blog:http://ifontapp.blogspot.com/ Email:help@fontcloud.cn Copyright: %2$s