title: How to support low data mode in iOS 13?
body: <p>"Low Data Mode" is introduced in iOS 13. See "Settings" section <a href="https://www.apple.com/ios/ios-13-preview/features/" rel="noreferrer">Apple's iOS 13 overview</a>:</p>
  
  <blockquote>
    <p><a href="https://i.stack.imgur.com/Bowvn.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Bowvn.png" alt="Low Data Mode"></a></p>
  </blockquote>
  
  <p>I couldn't find any developer documentation on this. </p>
  
  <p>Is this something third party app developers can opt into, <a href="https://www.macrumors.com/how-to/use-low-data-mode/" rel="noreferrer">as suggested by MacRumors</a>? Or is will it just suspend background activity when not connected to Wi-Fi, <a href="https://appleinsider.com/articles/19/06/16/13-hidden-ios-13-features-you-didnt-know-about" rel="noreferrer">as suggested by AppleInsider</a>?</p>