Description:
Font style is overridden by system fonts on phones like Samsung which has a feature of changing system fonts on setting.

Reproduction:
You need a phone that can change system fonts not fonts by themes. Change the font in System -> Display -> Fonts. Then the app also gets that font.

• I added my fonts in assets
• Uses a stateless component called AppText with my custom font.

Solution:
Is there a feature to prevent system font inside the app?

Additional Information:
rn: 0.42
OS: OS X Sierra
Platform: Android