title: iPhone app crashes randomly without any error or stack trace
body: <p>I am new here . Sorry if I this question is being repeated but I have a slightly different issue than the others.</p>
  <p>My app crashes randomly after certain amount of time interval without any error logs or stack trace. I suspect it's an memory issue . I have the following questions :</p>
  <blockquote>
  <p>1.) How to get stack trace (I have tried NSZombie enabled and NSUnacughtExcpetion handler) but didn't worked</p>
  <p>2.) I get Memory warning frequently in my app. How do I confirm whether it's the prime suspect for the above issue? (I have used Leaks, my app crashes when it has just 4Mb usage so I am not quite sure whether memory leak is causing it my app to crash. I know certain application which take heap memory more than 4MB .)</p>
  <p>3.) What is the upper limit for Memory leak for an application in iOS before app crashes ?</p>
  <p>4.) Would ARC help me in this situation ?</p>
  </blockquote>
  <p>Also, I have tried to debug issue using NSLog statements but since it crashes randomly , it would be hard for me to detect the root cause using this technique.</p>
  <p>Any ideas would be or help would be really appreciated</p>