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After I upgraded to iOS 4, there is an Airplane mode in the Settings on my 2nd generation iPod Touch.

Will turning on Airplane Mode improve its battery life noticeably?

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closed as off topic by heavyd, ChrisF, Mehper C. Palavuzlar, Gnoupi, Ivo Flipse Jun 28 '10 at 21:26

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Sorry, questions about electronic devices like the ipod touch are off-topic on Super User. Voting to close. – Gnoupi Jun 28 '10 at 21:05
up vote 3 down vote accepted

Short answer: YES.

Turning wifi off means the device won't look for networks to join, so it does less. So you get more battery life for other things.

On the other hand, iOS has some significant power management improvements that have resulted in better battery life for me (on my 3GS) anyway, so the improvement might be minimal on top of what's already there.

I wouldn't worry about it unless you're often away from a charging station.

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-1 for answering an off-topic question. Please refrain from doing that in the future. You can find more information about what is on or off-topic in the FAQ. – Gnoupi Jun 28 '10 at 21:10

If you're looking to save battery life, turning on Airplane Mode will noticeably increase battery life, especially if you had enabled "ask to join networks."

Even just turning off that option and leaving WiFi on will make a difference.

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Please don't answer an off-topic question. -1 – Gnoupi Jun 28 '10 at 21:06

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