title: Do ARKit anchors persist after pause and run again?
body: <p>I am considering developing an ARKit app, but before deciding to buy an iPhone I would like to ask two questions that are crucial for me. Please let me know if this has already been asked, as I could not find it somewhere else online.</p>
  
  <p>The questions:
  1. Let's say the motion tracking gets lost (e.g., when pointing to a white wall) and then recovers again. Does it localize in the same frame of reference or it starts from scratch? Also, are the anchors preserved?
  2. Let's say I pause the session and then run it again (e.g., by leaving the app and then coming back). Does is localize back to the frame of reference from before the pause? Also, are the anchors preserved?</p>
  
  <p>I am asking this because I know that localization does not work in ARCore yet and I was wondering about its state in ARKit.</p>
  
  <p>Thanks!</p>