Increase battery life with iOS4

Besides for turning off Wifi or push notifications, or shutting down, is there anyway to make the battery life last longer than it does with iOS4?

The answer, I regret to say, can be found in [this thread|http://discussions.apple.com/message.jspa?messageID=11980463#11980463|Th e sad truth about iPod/iPhone battery life].
In order to upgrade this solution from a suggestion by someone who isn't suffering the issue to an account of firsthand experience, I'll tell you that in a household with 2 iPod Touch devices that were both decimated by the upgrade to iOS4, this method cured the battery life of both units and will probably work for you.
+The solution boils down to the following:+
Using iTunes, run the "Restore" to factory settings.
I performed this technological equivalent of ritual sacrifice with full knowledge of the devastation it would wreck on the volumes of settings/passwords/usernames/servernames and countless other bits personal information manually entered over 2 years. I did it partially because I only half-believed it would work and was wantonly hoping for an even greater excuse to complain. 3 days later, I'm still finding information I have to look up and reenter.
+For my own part, I would have greatly preferred the ability to restore my iPod to a state just prior to installation of iOS4.+
Perform this restore at your own risk.
On the 4th page of the thread linked above, +Lawrence Finch+ describes a few less drastic steps you can attempt first if you are equally reticent to give your iPod a lobotomy. I tried them all. A series of acts which served only to prolong the inevitable and increase the amount of time wasted as well as to further inflame my ire.

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There are several settings you could add to the iPhone that would greatly increase battery life for users
1. Have the GPS radio shut off after a period of inactivity from the accelerometer, if the iPhone isn't moving there is no point in wasting battery life keeping the GPS radio on, have it remember the last position before shutting off to help speed up location reporting once the iPhone starts moving again.
2. Have an options screen that allows users access to all the iPhone services that consume battery, this would make it easy to understand what services use battery and will make it easy to disable those that are not currently required, order the list with the highest battery consumer at the top and the lowest at the bottom, this way people will understand that disabling those services at the top of the list will get them higher increases in battery life. Currently to toggle the battery consuming services requires visiting several menu screens, some several layers deep into the settings pages, people don't bother doing this and thus complanin about battery life.
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3. Have the option to schedule times for various battery consuming services to be available. I don't have wifi at work, i would save battery life if wifi was automatically disabled between 9am to 5pm, sure i could do this manually every day i get into work, but most people won't, if they can schedule it then there is no worry that the iPhone will always only be running those services that are required at the time. Of course there needs to be a manaual override in case something changes, like lets say i don't go to work on wednesday i would want wifi on for that day. Would be best to have these programable services on a 7 day schedule, or at least 5 weekdays and 2 weekend days, but the ideal is obviously that each day can be set seperately and accomodate all sorts of life schedules, just like a 7 day programable thermostat.
Currently a lot of people are complaning about battery life, mostly it is because they don't know what to do to conserve it, or they are too lazy to change settings all the time based on current usage and service requirements. Adding these functions would give people the ability to bettery manage the battery life on their iphones and would help to reduce the amount of complaints.
Thanks very much!

Helmet2279 wrote:
1. Have the GPS radio shut off after a period of inactivity from the accelerometer, if the iPhone isn't moving there is no point in wasting battery life keeping the GPS radio on, have it remember the last position before shutting off to help speed up location reporting once the iPhone starts moving again.
Actually it is already that way. GPS radio is usually off, unless needed by applications. The problem is that many applications need it (including free apps that include geo-location based advertising) and that's when GPS works some extra. There's also another factor in making GPS drain battery: it is not the GPS radio itself, but communicating with apple's Map server while using it even if you're not looking at any maps. The thing is that location services rely on some information that can only be obtained through communicating with a geo-location server. Which is another drain factor.
2. Have an options screen that allows users access to all the iPhone services that consume battery, this would make it easy to understand what services use battery and will make it easy to disable those that are not currently required, order the list with the highest battery consumer at the top and the lowest at the bottom, this way people will understand that disabling those services at the top of the list will get them higher increases in battery life. Currently to toggle the battery consuming services requires visiting several menu screens, some several layers deep into the settings pages, people don't bother doing this and thus complanin about battery life.
Unfortunately it is not that straightforward at all. It depends too much on the type of network you're using and on many other factors. It is impossible to have a reasonably reliable ranking like the one you're suggesting.
What could be useful is to have a single switch that controls all services that rely on persistent connections (push, application notifications, some other things) but it is not that trivial at all.
3. Have the option to schedule times for various battery consuming services to be available. I don't have wifi at work, i would save battery life if wifi was automatically disabled between 9am to 5pm,
Having WiFi on while having no WiFi coverage consumes, err, well, almost nothing. Especially in standby, when the phone keeps WiFi radios off at any rate. WiFi is the least expensive bi-directional radio and iPhone manages it very well.
Currently a lot of people are complaning about battery life, mostly it is because they don't know what to do to conserve it, or they are too lazy to change settings all the time based on current usage and service requirements. Adding these functions would give people the ability to bettery manage the battery life on their iphones and would help to reduce the amount of complaints.
A lot of people are complaining (including myself) because *it does not work right*. Not because I can't switch things off when I don't need them.

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The answer, I regret to say, can be found in [this thread|http://discussions.apple.com/message.jspa?messageID=11980463#11980463|Th e sad truth about iPod/iPhone battery life].
In order to upgrade this solution from a suggestion by someone who isn't suffering the issue to an account of firsthand experience, I'll tell you that in a household with 2 iPod Touch devices that were both decimated by the upgrade to iOS4, this method cured the battery life of both units and will probably work for you.
+The solution boils down to the following:+
Using iTunes, run the "Restore" to factory settings.
I performed this technological equivalent of ritual sacrifice with full knowledge of the devastation it would wreck on the volumes of settings/passwords/usernames/servernames and countless other bits personal information manually entered over 2 years. I did it partially because I only half-believed it would work and was wantonly hoping for an even greater excuse to complain. 3 days later, I'm still finding information I have to look up and reenter.
+For my own part, I would have greatly preferred the ability to restore my iPod to a state just prior to installation of iOS4.+
Perform this restore at your own risk.
On the 4th page of the thread linked above, +Lawrence Finch+ describes a few less drastic steps you can attempt first if you are equally reticent to give your iPod a lobotomy. I tried them all. A series of acts which served only to prolong the inevitable and increase the amount of time wasted as well as to further inflame my ire.

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Increase battery life with iOS4

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