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Turn off WiFi
Turn off Location Services
Turn off Auto-check e-mail
Turn Brightness way down
Turn off Fetch

Your battery should now be leaps-and-bounds better, otherwise, you might have a defect.

Minus the brightness, those are some reasons I bought the phone, it should work with those on and have good battery life
 
Minus the brightness, those are some reasons I bought the phone, it should work with those on and have good battery life
Compared to other phones that have the features you mentioned, the iPhone 3G does have good battery life.

Also, why does my battery go down more quickly with LS turned on, even if I don't use any apps that use LS all day?

I'm not trying to call you a liar or anything, but it seems to go against the behavior of my phone.:confused:
I don't talk much on my iPhone 3G. On a normal day, I go to work, use it as an iPod for about an hour or two, read a few emails, and maybe a few text messages. I have LS on the entire time and almost aways end the day with the battery bar showing fully charged. :confused:
 
And when Steve qualified that statement with "for some", who did he mean? Doesn't sound like everyone's going to see great battery improvements.

People who get 1000 emails pushed to them a day prolly wont see improvements.
 
Really? If I have LS turned off in the prefs and then turn it on immediately before finding my location in Maps, it takes a long time to finally zero in on my location. If it's already been on in prefs, finding myself in Maps is nearly instantaneous. I thought this was because the GPS already was locked on to the appropriate satellites instead of having to acquire them while locating me in Maps.

Also, why does my battery go down more quickly with LS turned on, even if I don't use any apps that use LS all day?

I'm not trying to call you a liar or anything, but it seems to go against the behavior of my phone.:confused:

Essentially keeping location services on basically lets edge/3G/WiFi figure out roughly where you are. It probably takes a little bit more power than having it turned off, as it essentially has to record it in memory. It shouldn't be a large differnce though, because its using the same connection you are already using as your cell connection. It uses this info to make GPS work faster when you are actually using GPS. However, it doesn't keep your GPS running, as that would kill your battery in a matter of hours.
 
I don't talk much on my iPhone 3G. On a normal day, I go to work, use it as an iPod for about an hour or two, read a few emails, and maybe a few text messages. I have LS on the entire time and almost aways end the day with the battery bar showing fully charged. :confused:

That's cool. I would like to leave as many features turned on as possible, so it looks like I should do some more experimenting. Maybe the behavior I was seeing was not directly related to the LS being on.
 
People who get 1000 emails pushed to them a day prolly wont see improvements.

the problem with push has nothing at all to do with the number and amount of data being pushed, its the continuous connection. The power it takes to push any given amount of email to a phone is no different than the power it takes to fetch or manually check those messages. And its essentially insignificant. CHecking for email a lot is what causes the significant battery loss, not the actual downloading of the mail.
 
Really? Not slamming you or calling you a liar, just curious - what's your source for this? I've been keeping location services turned off due to recommendations here that you mention. Thanks!

That's not been my experience. If I go to maps and tell it to find me, it will ask if I want to use my current location, turning on Location Services. I have always had to manually go in and turn it off when I'm done.

There may be some sort of management around how hard it's using it, but it's showing active in the settings.

Really? If I have LS turned off in the prefs and then turn it on immediately before finding my location in Maps, it takes a long time to finally zero in on my location. If it's already been on in prefs, finding myself in Maps is nearly instantaneous. I thought this was because the GPS already was locked on to the appropriate satellites instead of having to acquire them while locating me in Maps.

Also, why does my battery go down more quickly with LS turned on, even if I don't use any apps that use LS all day?

I'm not trying to call you a liar or anything, but it seems to go against the behavior of my phone.:confused:

All I'm going on is the documentation in the iPhone developers guide. Which I'd cut and paste into this discussion but that's not allowed. In summary it says

'To find a users location requires the powering up of the onboard radios and talking to cell towers, radios and the satellites. Leaving it on for an extended period of time drains the battery, it is usually sufficient to turn it off after an initial lock'.

Perhaps it's not turning off properly when applications are done using it however, I can't say I've had a problem with it myself.
 
All I'm going on is the documentation in the iPhone developers guide. Which I'd cut and paste into this discussion but that's not allowed. In summary it says

'To find a users location requires the powering up of the onboard radios and talking to cell towers, radios and the satellites. Leaving it on for an extended period of time drains the battery, it is usually sufficient to turn it off after an initial lock'.

Perhaps it's not turning off properly when applications are done using it however, I can't say I've had a problem with it myself.

I believe you. Maybe I was assuming that having it "on" in the settings was somehow drawing power. Kinda like how having wi-fi on seems to use up some juice scanning for open wi-fi spots. I'm happy to be wrong. :)

Like I said, I get pretty good battery life. Right now I'm at 4.5 hours of mixed use out of a 1 day 5 hours "standby" and have a half a battery left.

Thanks for the insight!
 
I think the 3G power issue is prolly gonne be the main reason. On days when my iPhone3G has signal trouble, push email trouble, safari connection issues, my battery life sucks.

Now, my connection issues have gotten much better and so has my battery life.

my 2 cents.
 
They would have optimized the firmware to manage better the stand by mode, this will be reflected in many apps and can improve battery back up.

In my case with regular usage on EDGE and wifi, i land up using 10-40% in a day and am quite happy with it, since thats like double the back up compared to my previous Win Mob device from HTC :rolleyes:
 
I tend to keep my battery charged up as I keep a charger at work and in my car. Would it be better for my battery to let it run low before charging? I don't typically do that as I don't want to get stuck without power for my phone.
 
With all this talk of GPS draingage I noticed on the Ipod Touch 2.1 upgrade that the Location Services warning has changed slightly. Now if an application wants to use GPS you get this warning:

"Turn on Location Services to allow (name of app) to determine your location"

You are then given the choice of "Settings" or "OK".

"Ok" assumes you want it left off, "settings" takes you to the settings page so you can do it manually, and then you have to relaunch your app...

Seems like an overcomplicated way of doing things to me...
 
With all this talk of GPS draingage I noticed on the Ipod Touch 2.1 upgrade that the Location Services warning has changed slightly. Now if an application wants to use GPS you get this warning:

"Turn on Location Services to allow (name of app) to determine your location"

You are then given the choice of "Settings" or "OK".

"Ok" assumes you want it left off, "settings" takes you to the settings page so you can do it manually, and then you have to relaunch your app...

Seems like an overcomplicated way of doing things to me...

I thought the 2.0.2 is already something like that ?

When you open any app that is going to use the GPS, it'll prom you whether you want to connect or not.
 
I thought the 2.0.2 is already something like that ?

When you open any app that is going to use the GPS, it'll prom you whether you want to connect or not.

Well the warning has changed. You used to get

"App" would like to use your current location. [Don't allow] and [OK]

now you get


Turn on Location Services to allow (App) to determine your location [Settings] [OK]

The old way if you pressed OK location services were switched on globally within the app. Now pressing OK assumes you want it left off, and the only way to switch it on is to press settings which exits the app and takes you to the standard settings page.

Seems like a step backwards to me.
 
Well the warning has changed. You used to get

"App" would like to use your current location. [Don't allow] and [OK]

now you get


Turn on Location Services to allow (App) to determine your location [Settings] [OK]

The old way if you pressed OK location services were switched on globally within the app. Now pressing OK assumes you want it left off, and the only way to switch it on is to press settings which exits the app and takes you to the standard settings page.

Seems like a step backwards to me.

O.. ic, then that sucks !

If it's so, i wont update to 2.1 :(
 
Fixing apps taking forever to load and even install or upgrade should by itself increase battery life. Additionally, everything being "snappier" and generally loading faster will also take some strain off the processor and increase battery life. Couple these with some other optimized power use related perhaps to GPS and 3G, and you could be looking at "significantly improved battery life." My personal guess is that most of us won't even notice the difference. Especially if you aren't jailbroken and watching the actual battery percentage.
 
the iphone battery can perform even higher, right now it seems the OS hogs some battery and thats what they may have fixed.
 
I'm seeing better battery life on my iPod Touch after installing 2.1, and yet the iPod doesn't have half of all the power hungry features of the iPhone (3G, Bluetooth, GPS, speaker etc), so if they've optimized power draw on all the iPhone-specific stuff as well, it's gonna be one heck of an improvement.

As for the new and not-so-improved Location Services behavior, couldn't they just have given you the option to turn it on temporarily for 1 minute or so? So instead of [Settings] and [OK] there would be something along the lines of [Yes, temporarily] and [Yes, permanently]... (dubious button labels, but you get the idea).
 
Turn off WiFi
Turn off Location Services
Turn off Auto-check e-mail
Turn Brightness way down
Turn off Fetch

Your battery should now be leaps-and-bounds better, otherwise, you might have a defect.

You could also try turning off the device!!!


PS: don't get offended! It's meant as a joke!
 
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