title: How to change device compatibility of iphone app on App store?
body: <p>Our company has two app. One's device target is iOS 9 (let say "first app") and the other one's is iOS 8.1 (let say "second app") . When we upload to App Store, compatibility for "first app" is shown as below. <a href="https://i.stack.imgur.com/eEonz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/eEonz.png" alt="enter image description here"></a></p>
  
  <p>But for "second app", it shows as 
  <a href="https://i.stack.imgur.com/bqwmm.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bqwmm.png" alt="enter image description here"></a></p>
  
  <p>Please help me figure out how to make second app's compatibility to show as same as first one's. And why it isn't compatible for all iPhone devices?</p>