This app contains a number of amazing Thai fonts that works for Samsung and OPPO phones running Android Nougat (7.0, 7.1.1) and Oreo (8.0).
How to use the fonts:
※ install the app and RESTART your device
※ Go to Settings‣Display‣Font and screen zoom
※ Choose your favorite font and click APPLY
Enjoy!
New Thai fonts for Samsung Galaxy, HTC and OPPO phones