title: Prevent custom system fonts overriding app fonts
body: <p>Devices like <code>Samsung</code> allows users to set <code>custom system fonts</code>. Issue is that those fonts can be overriding my app <code>fonts</code>. I mean if I set <code>Arial</code> <code>font</code> in my app and I've set <code>Calibri</code> font as <code>system font</code> on my mobile then <code>Arial</code> will be overridden by the <code>Calibri font</code>.</p>
  
  <p>How to prevent this situation?</p>