title: iOS Enterprise Provisioning Profile Expiration
body: <p>Every iOS Enterprise Provisioning Profiles expires after 1 year, correct?  After they expire and you renew them, do you need to re-install the new Provisioning Profile to all the devices, or do the devices get renewed automatically from Apple's certificate server?</p>
  
  <p>So, in other words, after you distribute an Enterprise app, do you need to update all the devices every year or can you simply renew the certificate on the Developer Portal or via Xcode?</p>