Comments on: iPhone 3G data push reason for short Battery Life? http://socialmediablend.com/2008/07/13/data-push-short-battery-life-iphone/ A Smooth Blend of Social Media for the masses Fri, 30 Jul 2010 07:33:48 +0000 http://wordpress.org/?v=2.5.1 By: Sylvain http://socialmediablend.com/2008/07/13/data-push-short-battery-life-iphone/#comment-123 Sylvain Fri, 09 Jan 2009 00:24:45 +0000 http://socialmediablend.com/?p=42#comment-123 My experience with an Exchange 2003 server is that the iPhone set in Push mode will actually poll the server every few second (5-10). Verified with tcpdump running on the Exchange frontend server. This is the reason for the huge battery drain that many observed, I confirmed that switching to 15 minutes Fetch provided a major improvement to my battery life. My experience with an Exchange 2003 server is that the iPhone set in Push mode will actually poll the server every few second (5-10). Verified with tcpdump running on the Exchange frontend server.

This is the reason for the huge battery drain that many observed, I confirmed that switching to 15 minutes Fetch provided a major improvement to my battery life.

]]> By: mattyohe http://socialmediablend.com/2008/07/13/data-push-short-battery-life-iphone/#comment-28 mattyohe Fri, 18 Jul 2008 09:28:38 +0000 http://socialmediablend.com/?p=42#comment-28 "My understanding of the ‘Push’ Feature is fairly limited"—Stop there. "Could the iPhone or even installed App’s be consuming battery life by sending data up to the servers via 3G while you’re not looking?" The answer is no. No apps other than Mail are running in the background. Push will actually <i>increase</i> battery life in most cases since Mail does not have to poll the network every 15 min for a fetch of email. Any new mail is <i>pushed</i> to the phone. Novel, huh? However, at some point there will be a tradeoff in a Push vs Pull battle. For example: If for some reason, your synched calendar updates several times in several 15 minute periods over the course of an entire workday, then it might be advantageous to do this in bulk instead of pushed in the moment. “My understanding of the ‘Push’ Feature is fairly limited”—Stop there.

“Could the iPhone or even installed App’s be consuming battery life by sending data up to the servers via 3G while you’re not looking?” The answer is no. No apps other than Mail are running in the background.

Push will actually increase battery life in most cases since Mail does not have to poll the network every 15 min for a fetch of email. Any new mail is pushed to the phone. Novel, huh?

However, at some point there will be a tradeoff in a Push vs Pull battle. For example: If for some reason, your synched calendar updates several times in several 15 minute periods over the course of an entire workday, then it might be advantageous to do this in bulk instead of pushed in the moment.

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