title: Will FCM Token change periodically like GCM registration ID?
body: <p>I have published apps in playstore that use GCM and I have a plan to migrate using FCM. everything information i needed have found, but i have one question that not find answer yet. my question is when token have been created, are token will be change periodically like GCM does?</p>
  
  <p>thanks</p>