4.0.1 Battery Life

did a full restore, still the same, much worse if there are apps running in the background, something that wasn't a problem before. Never had to bother closing apps manually before 4.0.1

this is my first ever iPhone and I am so disappointed!

After updating from v4.0 to 4.0.1 this phone is worse than ever, signal, calls dropping, battery life, camera...

When I plug in the phone there is an option to restore but that doesn't roll back to v4.0 it just leaves the phone as v4.0.1 but without any apps or changes may have made...

I also bought 4 cases none are of any use...come on Mr Jobs
Help us all out here!

Does anyone know...Are the iPhone 3g and 3gs who have changed there firmware to iOS 4 having the same problem we iPhone 4 users are having???

Try to return it as its not fit for purpose but no joy.

*Come on Mr Jobs - Help us all out here!*

Message was edited by: Iffy iPhone

I saw somebody else somewhere say to restore the phone to the original config and then add things back in and that worked for me. I went for two days with no apps, just email and the battery life was the way it used to be. I just added back all my apps, music, etc... and the phone has been working as it did pre 4.0.1 for battery life again.

I have the iPhone4 running 4.0.1. The last time I recharged my phone I got 2 days and 10 hours from one charge. The first few times you charge the new battery you should let it discharge down to 10% and then all the way back up to 100% Your battery learns to take a full charge. I let my iPhones go dead once a month. Turn off Bluetooth if you are not using it. It eats the battery quite a bit.

I'm glad that I found this thread. I to really like my iPhone 4 and haven't had any of the problems I've read about on here and elsewhere on the Internet.
Every time I plug it into my laptop iTunes tells me about the v4.0.1 update and I've been worried about it actually causing problems by updating to it. Seems like every time I try to fix something that isn't broken it breaks, lol. But after reading this thread and a few others I think I'll stay with v4.0.

I upgraded my iPhone 4 from 4.0 to 4.0.1 and hit the battery issue.

I have done a re-install and set up as a new phone then set up all my apps from scratch as per Apples advice but the battery life is still 20-30% worse than before the 4.0.1 update.
Apple just said take back to a store and get the battery replaced - they don't recognize the issue at all.

I have just installed 4.1 beta 2 to see how that performs.

What's the betting they have turned up the gain on the cellular transmitter to help combat dropping calls....

Same issues here, and 4.0.1 is the only thing that has changed recently that could be causing this.

Sebby* wrote:
Same issues here, and 4.0.1 is the only thing that has changed recently that could be causing this.

4.0.1 is not causing the battery problem. Many more people have updated than have not and few are complaining. Might be a mail setting that got stuck or something else but the update is fine on my phone and a lot of other folks phones.

Perhaps 4.0.1 is the issue, but then what is it? I've removed my 2 Exchange accounts, reset all settings, reset network settings, closed all apps and rebooted the phone, fully charged then left overnight - usage was about 20 minutes this morning. Why?

I was going through the same thing with my first handset and here's my thread: http://discussions.apple.com/thread.jspa?messageID=12004093#12004093

KC7GNM wrote:
4.0.1 is not causing the battery problem. Many more people have updated than have not and few are complaining. Might be a mail setting that got stuck or something else but the update is fine on my phone and a lot of other folks phones.

That was the only thing I changed. The battery was running perfectly until then - even considerably better than my 3GS on iOS4. I updated to 4.0.1 and the next day battery life was pants. I installed everything from scratch, configured my mail accounts from scratch and the next day it was exactly the same.. pants! So unless you're suggesting that everybody on here's battery went faulty the same day they installed 4.0.1 then there is a problem.. one which Apple refuses to recognise...

Ok, so to answer "Why aren't more people complaining then.." If they did something with the signal calculations / power levels then the drain would be dependant on distance from cells etc.. and as we all have a routine it could be that some peoples daily routines mean the phone has to work harder to keep a signal thereby draining the battery faster.

All I know for sure is that I have 20-30% less battery time now.

I'll report back on how 4.1 Beta2 works today.

Sappsys wrote:

KC7GNM wrote:

All I know for sure is that I have 20-30% less battery time now.

I'll report back on how 4.1 Beta2 works today.

Very much looking forward to these results - will it be from a restored or backed up phone though?

I'll report back on how 4.1 Beta2 works today.

Does that mean you are a developer and are violating your nondisclosure agreement by discussing the beta in this public forum, or you are admitting to using pirated confidential software, in a public forum run by Apple. They know your real identity. Not real bright.

modular747 wrote:
Does that mean you are a developer and are violating your nondisclosure agreement by discussing the beta in this public forum, or you are admitting to using pirated confidential software, in a public forum run by Apple. They know your real identity. Not real bright.

I am a developer, but I'll point you to this :-
Confidential information is not..
(b) information that you can demonstrate to have had rightfully in your possession prior to disclosure to you by Apple;
(c) information that is independently developed by you without the use of any Confidential Information.

I am not releasing any information Apple has given me, I am releasing information I gave gained through my own experience of a specific version of software.

designerdave wrote:
Very much looking forward to these results - will it be from a restored or backed up phone though?

This is from a restore.. with this issues I was having the fresh install didn't seem to make any difference, and I don't fancy having to go through all that again 🙂