IOS 4.3.3 battery life has been significantly reduced

*** you talk about the most fixed the **** bug rofl

I have a 3gs and also encountered the rapid battery drain. I FOUND A FIX THAT WORKED FOR ME.

I saw other people deleted their Exchange account and re-installed it after shutdown.

I have a mobile me for syncing calendars, contacts, etc.

I deleted it. Shutdown with power and home button.

THen I re-installed the mobile me account and it is now working correctly. No longer draining the battery.

I Hope this works for others.

Not sure why it works, I guess the mobile me was constantly seeking to sync accounts and draining the battery. I leave "fetch new data" off and update it when I open the program:mail,calendar, etc.

Ok. I am back.

• Same problem.
• Tried all suggestions.
• Got a replacement phone from the APPLE store and did not sync with iTunes for 2 weeks.
• PUSH still drained the battery. This was the only setting that made a difference.
• FETCH resolved issue.

I just did the 4.3.4 iOS update and changed mail settings for PUSH and FETCH every hour. It appears after 1/2 Hour, I still have 100% battery power. Normally at this point there would have been 5% battery usage doing nothing with the phone in standby.

I just wanted to report my experience. As you all know and have read here, there really is no one solution. None of my co-workers who had purchased iPhones 6+ months after me have the issue with the PUSH setting turned on. It could possibly be a caused by a few batches of "bad hardware" since not every phone is impacted.

GOOD LUCK everyone!

Guess I was rejoicing prematurely. Battery dead overnight. Back to FETCH.

I believe apple has fixed that issue with iOS 4.3.4. Upgrading then try your battery test again

If you were referring to my posts, I did the upgrade to iOS 4.3.4 yesterday and it did not resolve my issue.

jomale wrote:

If you were referring to my posts, I did the upgrade to iOS 4.3.4 yesterday and it did not resolve my issue.

The update was not intended to fix the issue. The release notes said they only purpose was to fix a security vulnurability. Sometimes just doing an update or restore will fix it, independent of the specific release. And sometimes an update or restore will cause the issue, independent of the specific release version.

And usually a Restore without reloading your backup will fix it.

As you know from previous conversations, Lawrence

I read the release notes and I know the update was only meant to address a PDF security flaw.

I was just hoping the process of updating would resolve the issue just like the act of doing the 4.3.3 update caused my issue . I was wrong to assume it resolved it.

A replacement phone right out of the box without syncing any previous apps or data had the drain issue as well.

The only thing that was configured was mobile me and two exchange accounts.

For me, that appears to be my drain issue if active sync settings are set to PUSH.

I am fine if all mail accounts are set to FETCH. It boggles my mind.

Maybe I should go back to the Apple store and demand a new phone. The only things that are different between me and other friends with iPhones is the fact they have newer phones and do not have MOBILEME accounts configured. I deleted my MOBILEME account last night to test that scenario and still had battery drain.

At this point, my thoughts are it must be hardware related. *sigh*

How much email do you get? Push email drains the battery in proportion to the amount of email you get. So with 3 push accounts your phone may be doing as well as any phone with 3 push accounts would do. I have one push account. During the week, when I get 50 to 100 push messages a day, my battery just about gets me through the day. On weekends when I get very little my battery still has 70% at the end of the day. As I charge overnight, every night, this is not an inconvenience for me.

I understand what you are saying and during a busy day I can understand the battery drain.

I am technical support and monitor both my personal email account and the helpdesk email account.

As a test I deleted my mobile me account in case that was causing the issue. With two exchange accounts set to use active sync, the battery drained and the phone shut off within 8 hours. There were 2 emails that I received total between the two exchange accounts in the overnight hours. So twice there was a push. Normally I have FETCH set for every 15 minutes and the phone never drains over night. With the settings on FETCH I have about 85% battery power when I awaken. I will just revert to FETCH at least in the overnight hours. With no change in the amount of email I am receiving, it is just annoying and maybe a "coincidence" that this all started with the iOS 4.3.3 update.

I had a similar problem a couple of years ago. The symptom was that usage time equaled standby time in Settings/Usage. Working with my Exchange admim we identified that each iPhone on our network had multople connections open. This was causing hig CPU usage on the server as well as short battery life on the phones. He rebooted the Exchange server and the problem was resolved. The next time it happened a few months later I tried deleting the Exchange account from the phone, rebooting the phone, and adding it back. This fixed it for a while. But the problem recurs occasionally to this day, and that fix works for me. If you haven't tried it you might want to. BTW, just turning off the 3 switches in Settings (for mail, contacts and calendar), then opening Mail, Contacts and Calendar to clear the queues, then rebooting usually works also.

That is good to know. No other iPhone4 syncing with our Exchange server at work has been affected. I know of 7 in the IT department that do not suffer battery drain with PUSH turned on. I will try your suggestions though and hope that it works. 😀 I did check my usage time/standby time this morning and they were not the same. I could check with the admins at work. Not sure they will have the time to troubleshoot this for me. Thanks for the added info.

why actually you all need an exchange mail account just use the normal pop3 server -.-

Because POP3 does not support syncing multiple folders, mirroring deletions and moving messages to folders, syncing calendars in real time wirelessly, syncing contacts in real time wirelessly and syncing notes. POP3 is only intended tor situations where only one device ever accesses the email account.

The solution is ios 4.2.1. With this ios version there is no battery problem, which only came with ios 4.3.