What runs during deep sleep
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/5120185/android-sleep-standby-mode">Android Sleep/Standby Mode</a>  </p>
</blockquote>



<p>I'm having a bit of trouble understanding when the phone is actually in deep sleep, and what exactly runs and does not during this time. So first question, when exactly is the phone in deep sleep?</p>

<p>Secondly, I'm working on a app that needs to wake the phone from deep sleep to notify the user if they've set a reminder for themselves. Testing while hooked up to USB is fine, but it seems that while disconnected and sleeping, I'm not getting the notifications. I've tried a few things, for instance listening for ACTION_TIME_TICK doesn't appear to work. As I've done research, I'm rather certain that using AlarmManager would work (as it explicitly says it will wake the phone from deep sleep) but I was researching alternatives. I hate to say it, but my phone has failed to have Alarms go off several times with the built in alarm system... so I'm a bit sketchy about that.</p>

<p>I suppose what I'd like to really know... is what exactly runs during deep sleep? I can't really test (afaik) since it doesn't appear to enter deep sleep while plugged into USB. Are my services running, etc?</p>
