title: Know if iOS device has cellular data capabilities
body: <p>I have a toggle in my app that's "download on WiFi only". However, that toggle is useless for iPod touch or WiFi-iPads. </p>
  
  <p>Is there a way to know if the device has cellular data capabilities in code? Something that would work in the future would be great too (like if an iPod touch 5th gen with 3G comes out).</p>