title: iPhone Increase font size for larger devices
body: <p>I have simple app that has some views to show. It is portrait app so I do not have to build any other design for orientation specific. </p>
  
  <p>But I have one trouble(Being new on iOS), I have read about size classes and yet I am unable to understand that How I can mange to increase size of a text/Label per device. </p>
  
  <p><strong>What I have done:</strong> </p>
  
  <p>I mean I am testing on following mobiles </p>
  
  <ol>
  <li>iPhone 5s</li>
  <li>iPhone 8plus </li>
  <li>iPhone XR</li>
  </ol>
  
  <blockquote>
    <p>I have a label inside a view and that label has 18 points as a text
    size or font size</p>
  </blockquote>
  
  <p><strong>What I want:</strong> </p>
  
  <p>I want that my font must be gradually increase on large devices such as iPhone XR and iPad and decrease on smaller devices such as iPhone 5s </p>
  
  <p><strong>Question:</strong> I want to do following but I do not know how to do it even with size classes because as far as I understood Size classes is related to orientations the most, may be I am wrong but this is I extracted from my readings  </p>
  
  <blockquote>
    <p><strong>I want that on following phone, text size must be something like these</strong></p>
  </blockquote>
  
  <ol>
  <li>iPhone 5s        --> Text Size 12</li>
  <li>iPhone 8Plus     --> Text Size 18</li>
  <li>iPhone XR        --> Text Size 19</li>
  <li>iPadPro 12 inch  --> Text Size 32</li>
  </ol>
  
  <p>Please let me know how to achieve that ? </p>
  
  <p><strong>Note: I want to do it with out coding I mean in interface builder</strong></p>