title: How to convert app from 32 bit to 64 bit in Xcode 7.3?
body: <p>When I install app over OTA, it says "my app May Slow Down your iPad - The developer of this app needs to update it to improve its compatibility".
  I researched and I got that my application is running with Architectures 32 bit $(ARCHS_STANDARD_32_BIT), it need to convert to 64 bit.</p>
  
  <p>I changed Architectures to Standard architectures (armv7, arm64). Valid Architectures: arm64 armv7 armv7s. Build Active Architecture to NO:</p>
  
  <p><img src="https://i.stack.imgur.com/pSzRE.png" alt="enter image description here"></p>
  
  <p>Then My app can work in simulator but When I Archive Xcode say that "Build Fail"</p>
  
  <p><img src="https://i.stack.imgur.com/i3jCe.png" alt="enter image description here"></p>
  
  <p>How can I do that?</p>