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copied!<p>If you seek a solution that will be approved by Apple, you're right you can't use the <code>setKeepAliveTimeout:handler</code> and even if you could - you can't set the timeout to something that's smaller than 600 seconds, so I guess it won't be of a great use anyway (besides that It's not guaranteed to fire the event even remotely close to the timeout you specified. For example, I set it to 600 seconds and some event fired as early as 360 seconds..).</p> <p>About playing the silent sound, except the waste of battery, if you're app has legitimate use for background audio (if you're implementing an alarm clock, that's pretty obvious), I don't see a reason for your app to be rejected, as long as you don't try to use other background features (GPS signal, VoIP handlers, etc).</p> <p>Here's one example app that used this "feature" for their benefit: <a href="http://tapbots.com/blog/pastebot/pastebot-music-in-background" rel="nofollow noreferrer">http://tapbots.com/blog/pastebot/pastebot-music-in-background</a></p> <p>About other methods, you can look in this thread: <a href="https://stackoverflow.com/questions/9725192/how-do-i-start-playing-audio-when-in-silent-mode-locked-in-ios-6">How do I start playing audio when in silent mode & locked in iOS 6?</a></p> <p>On a personal note, it's not very easy to cope with background policies of Apple. Me and my company had (have?) a hard time just to maintain a simple VoIP connection due to all the limitations. My best advice is try to do as less as possible in the background as you can. If the <code>UILocalNotificaion</code> solution suits you, you'll probably should stick to it and live with the limitations.</p>

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