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Battery Issues with 3.0.1

After upgrading my 3GS to 3.0.1, battery life has dropped dramatically. Before, I could make it through a whole day (12-14 hours standby, 3-4 hours of use) and the battery would be anywhere from 20-30%. After the update now, I'm lucky to make it halfway through the day.

Another problem I noticed was battery percentage "jumping". I would check my phone, and it would show 15% battery life. As I was using it, the battery percentage jumped up and down between the original 15% and 50%. My friend, who also has a 3GS, has noticed this also.

I'm trying a restore now - and see if that has any affect for today.

iPhone 3GS, iPhone OS 3.0

Posted on Aug 5, 2009 9:29 AM

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107 replies

Aug 5, 2009 10:14 AM in response to dargo21

I'm not sure you can say it has nothing to do with the 3.0.1 update - as I have been seeing the same behavior on my 3GS post-update, and before I was seeing stable linear battery drain over the course of two days of normal use. I also did the restore as new and sync, and it's still doing it.

I am on my way (back) to the Apple store for another replacement.

Jim

Aug 5, 2009 8:15 PM in response to SeamusCA

SeamusCA wrote:
I'm not sure you can say it has nothing to do with the 3.0.1 update - as I have been seeing the same behavior on my 3GS post-update, and before I was seeing stable linear battery drain over the course of two days of normal use. I also did the restore as new and sync, and it's still doing it.


it has nothing to do with the 3.0.1 updated. my last charge on my 3GS with everything turned on except bluetooth gave me 4+ hours of usage with 2 days 16 hours of standby. i still had 10% battery left before i put it on the charger.

Aug 6, 2009 5:39 AM in response to w7ox

w7ox wrote:
Installing 3.0.1 had no adverse effects here. So I don't think it's 3.0.1 so much as something which happened in the process of installing it for some users.

What I said also. As I'm a "charter" iPhone owner I've seen posts about problems after every upgrade, and invariably the people with problems attribute it to bugs in the software and want to downgrade to the previous version. Which doesn't usually fix it, because the problem is caused by something that went wrong in the upgrade process itself, and was not a flaw in the new software. Sometimes it does fix it, but that's because the downgrade process wipes the phone. Doing a clean install would accomplish the same thing.

For 3.0.1 especially there's no way it can be the software; all this update did was add a couple of lines of code to check for buffer length on incoming SMS messages (a guess, based on 40 years of programming experience).

Aug 7, 2009 10:44 AM in response to Lawrence Finch

i did the complete restore (as new phone) and did not work. I was still having major battery issues/wi fi issues etc...
After reading through a lot of forum topics, I decided to see if some apps were causing the software issue. I did a restore with no apps. Battery issue solved.
I have not been able to figure out which app/apps are the issue. However, I am getting great battery life with push ON, wifi ON etc...
Do the restore as a new phone (remove firmware). If you still have issues, remove some of the apps you no longer use and see if battery life changes.

Battery Issues with 3.0.1

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