battery drain 4.3.4

I started experiencing the battery drain problem after:

1. I updated to 4.3.4 on my iPhone 4.
2. Installed the Google+ iPhone app.
3. I added an Exchange account email access for work.

After this my battery would be down to 10-20% life after 5-6 hours. Prior to this my battery would last for several days without a charge.

To resolve the problem I did the following:

1. Removed my Exchange email account.
2. Changed the notifications for Google+ to just badges.
3. Reset network connections.
4. Turn the phone off then back on.

Please note that I did NOT have to perform a restore from backup.

I'm happy to report that after 3 hours since the last charge, my battery level is still at 100%.

I may try to add my Exchange email account back on the phone, but that may re-introduce the battery drain problem.

-frank

everything you did above has been mentioned throughout the forum as one of the many troubleshooting steps one should do FIRST before complaining about battery drain issues. 😉

for many of us, we've tried all the recommendations with the exception of a restore. and a restore from backup is NOT one of the recommendations but a full factory restore and redownload all your apps to your device-not from a backup.

Quick update ...

Throughout the day today my battery level stayed consistently around 100% - 99%.

Earlier tonight I upgraded to 4.3.5, then an hour later I re-added my Exchange account back on my iPhone 4 (battery level around 94%). A couple of hours later my battery level is still hovering around 94% (same level as when I added my Exchange email account).

So it seems that there was something fishy about 4.3.4 related to Exchange accounts/servers. Others have mentioned that the issue solely lies with the Exchange server, but I'm not so sure I buy this theory. I'm betting it's a combination of both the 4.3.4 update and how Exchange email accounts work on the iPhone.

For now I'm leaving my Exchange account on my phone and see how it does tomorrow throughout the day -- keep you posted.

Hello,

same issue with 4.3.3, not related with 4.3.4.

Ref. (my previous post): https://discussions.apple.com/thread/3182312?answerId=15651127022#15651127022

Could you please tell us if you are using Contacts sync when using your Exchange account ?

In my particular case (and it seems many of us are experiencing different kind of issue), battery drain is only related with Contacts Sync using Exchange.

If I use Exchange to sync Mails and Calendar, there is no problem.

I am using Google Apps (not gmail) exchange server (but it seems it is the same server m.google.com).

And I have no data package.

Could you pleade tell us your configuration: Contacts sync ? Which Echange server ? Data package ?

As said in my previous post, I tried Contacts sync since Google performed some updates, and it changed nothing. I'll have a try after 4.3.5 update this evening. 2 updates the same week: Apple seems to try to change some issues before iOS5 arrives.

As Appls is well know to do changes not advertized in the Readme, I hope they solved the sync issue for Contacts through Exchange !

Fred

frank va wrote:

Quick update ...

Throughout the day today my battery level stayed consistently around 100% - 99%.

Earlier tonight I upgraded to 4.3.5, then an hour later I re-added my Exchange account back on my iPhone 4 (battery level around 94%). A couple of hours later my battery level is still hovering around 94% (same level as when I added my Exchange email account).

So it seems that there was something fishy about 4.3.4 related to Exchange accounts/servers.

Sorry, no. Searching the forum you will find posts similar to yours for every release over the past 4 years. There is nothing fishy about 4.3.4, unless it was also fishy about 4.3.3, 4.3.2, 4.3.1, 4.2, 4.1, 3.1.3, 3.1.2, 3.1, 2.2, 2.1, etc. As the symptom has been reported by some people for every one of those releases and even between releases. The process of updating can cause battery problems, independent of the specific version. Only for a few phones, but this was your turn. And yes, restoring or updating with sometimes fix it, again it doesn't matter which release you upgrade to or restore from. But not always.

In your case the problem is a well known bug in the ActiveSync protocol. It happens on other mobile operating systems also. But there are other cases of sudden battery drain unrelated to Exchange, as a forum search will reveal. Which is why there is no one fix; the battery drain is a symptom of many different "diseases".

I agree that you will find similar posts, but in all the others it wasn´t fixed by an upgrade.

I have been unable to apply any of the fixes since I left UK shortly after upgrading to 4.3.4.

My battery life went on standby from 16 hours to less than 5. when I got to a workstation with internet access 4.3.5 had been released and I did the upgrade. Battery life is now back up to 16hours (calculated)

overnight loss from 100% to 72%, wheras prior to that it went 100% to turned off in the wee small hours.

Some service was left running unchecked in 4.3.4 and it would restore my faith in Apple if they just came out and admitted it.

Jordi

nice. it's still too soon for me to upgrade to 4.3.5. i'd like to hear from more people before I take the plunge, if at all.

Well, people who don't have problems rarely take the trouble to post in a support forum that they don't have problems, but people who have problems are likely to post. So you get a very skewed idea of how common a problem is. If you go to a hospital ER and record how sick each of the patients is you would not think to assume that the whole population of the world was sick. But visitors to this forum do exactly that; if even one person reports a problem with 4.3.5 they will decide not to update. There are over 100 million iDevices; if there was a widespread problem you would see thousands or tens of thousands of reports of it. This happened with 2.1, when there really was a problem and there WERE thousands of posts about it. And that was at a time when there were only 9 million phones. The probability that you will be hit by a bus while talking on your phone as you cross the street is much higher than the probability you will have a problem with 4.3.5.

BTW, I upgraded to 4.3.5 and had no problems with it. And, if you use any banking apps, you SHOULD upgrade because it fixes a security hole that allows someone to circumvent SSL and see your information.

I have not had a problem upgrading to any release except 3.0, which I fixed by deleting my Exchange account, rebooting, and adding it back.

Do it already. I had the battery drain problem with 4.3.4 (with Exchange) but I resolved it by removing the account, hard reboot, then re-added the Exchange account. I just upgraded to 4.3.5 with no problems.