IOS 4 reduces battery life on my iPod touch 2nd Gen

Before I updated my iPod touch to iOS 4 my iPod touch could stay in sleep mode for weeks, but now with iOS 4 it can't last a day in sleep mode. I believe this is because iOS 4 keeps the WiFi on even when in sleep mode. In iPhone OS 3.1.3 the WiFi would turn off when in sleep mode, in iOS 4 Wifi is always on allowing my apps to look for notifications all the time and that is what I think is the problem. In iPhone OS 3.1.3 I could have Mail fetch new data every 15 minutes without impacting the battery life in any way. I tried doing the same in iOS 4 and the battery couldn't last 6 hours.
The problem with iOS 4 is that the WiFi is on at all times, even when it is in sleep mode, something Apple needs to fix in the next update.

The answer, I regret to say, can be found in [this thread|http://discussions.apple.com/message.jspa?messageID=11987618#11987618|Th e sad truth about iPod/iPhone battery life].
It basically boils down to using iTunes to perform the "Restore" to factory settings.
The fact of the matter is that it could be WiFi, Notifications, multi-tasking (even if 2nd Gen iPods do support it) or a thousand other things. The only thing I can save for sure is that there are deep, system level settings that are either corrupt or, most likely, obsolete. Settings that vary so widely from user to user that the only one can be certain that they have all been eliminated is to flush them all and start over.
Not a very scientific solution, but an effective one.
If you find this suggestion ludicrous and unreasonable, feel free to read my other posts on the topic. You'll find me to be a confederate.

Similar Messages

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