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Last Post
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Sep 19, 2008 8:48 PM
by: TommyWillB
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Posts:
11
From:
Canada
Registered:
Sep 12, 2008
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Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 1:19 PM
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I used to get very acceptable battery life prior to the 2.1 update. I am on 3g all day in the office, frequent usage, and I always get a full day, comprising 8+ hours total, and 4-5 hours active usage. I updated to 2.1 at around noon today, and by 3:30, with the total time indicator, displaying 3:18mins, I got the 20% remaining battery indicator. The interesting thing to note is I didn't use the phone for the full 3.5 hours straight! Normally standby and usage would be dramatically different, with standby being a much bigger number than usage - but now, my usage and standby are only off by 1 minute!
In any case, my battery life appears to be less than half of what I had prior to the upgrade - this was the main feature I was interested in, way to bork that one Apple!
-Andy
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Posts:
244
From:
Bothell WA
Registered:
Oct 10, 2002
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 1:22 PM
in response to: BobaHoTep
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I have no idea if my update will make battery better or worse, I just wanted to say nice use of the word "bork" in a sentence.
Mac Pro 8 Core 16 GB RAM, Dual 2 G5 PPC 6.5 GB RAM, 17 and 15 PB
Mac OS X (10.4.10)
Dual 23's, Blackmagic Intensity Pro, Cal Digit Raids, G-Tech Raids, Camera Gear
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Posts:
100
From:
UK
Registered:
Jul 17, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 1:23 PM
in response to: BobaHoTep
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It may be that with the upgrade the phone and the battery need to recalibrate. I may be worth running the phone down to after the 10% remaining message when it turns off and won't restart until recharged to recalibrate. That's if you haven't tried this already.
Ciao
PC
Windows Vista
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Posts:
84
Registered:
Jul 19, 2005
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 1:39 PM
in response to: a1000
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I think something was running in the background and killed your usage. I would restore and try again.
iphone 3g 16 black
Windows XP Pro
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Posts:
11
From:
Canada
Registered:
Sep 12, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 1:43 PM
in response to: Andrew Bediz
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How could this be, since the iPhone does not support background processing?
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Posts:
434
Registered:
Sep 16, 2005
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 1:51 PM
in response to: BobaHoTep
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iPhone supports background processing - how else does the time and date get updated, mails checked, SMS messages received, calendar events notified, iPod music played, and phone calls received, all while the phone is 'off' or you are doing other things with it?
Background processing is not supported for third-party applications.
PowerBook G4 Titanium 500MHz
Mac OS X (10.4.11)
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Posts:
11
From:
Canada
Registered:
Sep 12, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:00 PM
in response to: Frank Malloy
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Right, I should have been more precise. However, the hypothesis was that something was running in the background which drained the battery. The first mark against this hypothesis is that my battery life was fine prior to the 2.1 upgrade, and I didn't change any settings post upgrade. Let's assume that the 2.1 upgrade changed something without my knowledge - so let's go through the items you mentioned:
- Time and Date: these were set to "Set Automatically" before the upgrade, so maybe Apple has changed the frequency and this is burning battery? In any case, this would still qualify as "worse after upgrade"
- Calendar events: I have no notifications today, so this likely isn't the problem, unless, again Apple is checking for notifications more frequently, which would again qualify as "worse after upgrade"
- ipod: this wasn't running in the backgroud, it was off for the full 3:18 between full charge and 20% warning, so likely not responsible
- phone calls: I had 3 < 2 minute calls on it in the 3:18 between full charge and 20% warning. Likely not responsible, unless 3G is using waaay more juice
So, this still appears to be worse battery life after upgrade.
-Andy
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Posts:
9,805
From:
Texas
Registered:
Jun 20, 2007
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:02 PM
in response to: BobaHoTep
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Its also possible that something glitched during the update, causing a process to run in the background and use the battery faster.
Mac Pro, 20' Cinema Display, iSight, MacBook Pro
Mac OS X (10.5.4)
iPhone 8gb, iPod Video 60gb, Time Capsule, Apple TV
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Posts:
11
From:
Canada
Registered:
Sep 12, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:08 PM
in response to: Ansuz82
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That seems unlikely, especially given that I've shut down, and restarted the device. If it were a glitch that persevered after a reboot, that would qualify as a "feature" of the 2.1 update. Then again, I don't see anyone else with the problem yet so, guess we'll wait and see if this is pervasive or just my issue for now. Worst case I'll try a restore, but am not relishing that.
I can mention, in terms of oddities, the backup prior to applying the update took over an hour, which I thought was pretty hilarious, given that the other "big" feature in the update was faster backups - maybe I'm just cursed 
-Andy
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Posts:
9,805
From:
Texas
Registered:
Jun 20, 2007
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:10 PM
in response to: BobaHoTep
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That seems unlikely, especially given that I've shut down, and restarted the device. If it were a glitch that persevered after a reboot, that would qualify as a "feature" of the 2.1 update.
Haha. What I'm saying is that when the update installed a piece of code that turns an app off might have been damaged. Rebooting wouldn't fix the code.
I can mention, in terms of oddities, the backup prior to applying the update took over an hour, which I thought was pretty hilarious, given that the other "big" feature in the update was faster backups - maybe I'm just cursed
That is a big feature of the update. However, that backup occurred before the update was installed. No software, to my knowledge, has the power to implement a change before the patch is applied.
Mac Pro, 20' Cinema Display, iSight, MacBook Pro
Mac OS X (10.5.4)
iPhone 8gb, iPod Video 60gb, Time Capsule, Apple TV
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Posts:
11
From:
Canada
Registered:
Sep 12, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:20 PM
in response to: Ansuz82
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Doh - you're right, though I sort of assumed that the backup speedup was a function of iTunes 8.0 and firmware 2.1. Regarding the glitch, who knows, maybe...
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Posts:
5
From:
Vancouver, BC
Registered:
Aug 22, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:41 PM
in response to: BobaHoTep
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I also just got the 20% battery warning. It had a full charge before the update (at 8:30 AM) and I listened to music on the way to work - 45 minutes tops, but the usage says 5 hrs. My iPhone has been running NONSTOP since the update.
I just did a reboot and plugged it in. Hopefully this will be a one time event.
PC
Windows XP
iPhone 3G
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Posts:
434
Registered:
Sep 16, 2005
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 2:58 PM
in response to: BobaHoTep
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Normally standby and usage would be dramatically different, with standby being a much bigger number than usage - but now, my usage and standby are only off by 1 minute!
This is a big indication that something is running when you don't expect it. Could be hung checking mail?
Is your phone warm? Higher than normal temps are also a sign...
PowerBook G4 Titanium 500MHz
Mac OS X (10.4.11)
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Posts:
11
From:
Canada
Registered:
Sep 12, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 7:37 PM
in response to: Frank Malloy
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well after coming home and jacking in to my regular iTunes library and doing a sync the situation seems to be better. I've got two plus hours of usage and I'm only down about a quarter battery. That said my usage and standby are still exactly the same which denotes some kind of problem. Anybody else see the same usage and standby times?
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Posts:
9
From:
Portland, OR
Registered:
Jul 17, 2008
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Re: Battery life substantially worse after 2.1 firmware update
Posted:
Sep 12, 2008 9:57 PM
in response to: BobaHoTep
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Yes. I have exactly the same problem. I've been poking at this for many hours now.
I've reset the phone to factory settings and restored from a backup. That was no help.
Now, I've reset the phone to factory settings and just finished manually reentering most of my settings.
While manually restoring my settings, I ran into trouble getting my MS Exchange account to work. "Can not get mail" (or similar). I tried a workaround posted in one of the other threads to get it to work (no limit on synced messages), but it'll never stop downloading/syncing. Do you, by any chance, also have an Exchange account? I think it could be what's causing the reduced battery life.
For now, I've just deleted my iphone's exchange account. It's running cooler and the Usage time is diverging from the standby time.
Sigh.
MacBook Pro 2.4 GHz
Mac OS X (10.5.4)
iPhone 3G 16GB
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