Galaxy S2 - ICS Upgrade - Battery Drains Fast

[marcimark]

Hi Guys,

I updgraded the software of my S2 to ICS two days ago, and the phone is not really usuable anymore.

I use the phone for business and have 2 active email accounts (push during the week, hourly check on weekend and afterhours).

The battery is now flat after just 6 - 8 hours just sitting on the bedside table. During the day I have to rechagre to keep it going!

This is very disappointing and I wish I could downgrade to 2.3.6

Battery life on 2.3.6 was excellent!

I researched the Internet already, and there is no fix for the battery issue at this stage.

The battery can't get calibrated, there is already an extended thread on XDA developers.

Anybody has an idea or knows how to easily downgrade through KIES?

Any advise is appreciated.

Cheers

[Cummins]

I am having the same trouble, battery stats show android os as 50-75% of the drain...will try a factory reset and see if it improves...regretting the 'upgrade' now!

[vbsgsii]

Telstra, please make a down grade to 2.3.6 available. Factory reset of ICS does not improve battery life..

[james_fisk]

/signed

My ICS Galaxy s2 is also discharging very quickly, while nothing is turned on etc.

james

[manupeg]

Same as me. Do you all are having an exchange account ? Cause I do. My wife not and her Galaxy SII battery is still lasting as before since the ICS upgrade.

[holdup]

Not sure if this helps but I was initially having battery drain problem as well. After doing a factory reset and going through about 3 charge cycles the prob appears to have resolved though (yesterday got about 14 hrs of battery with moderate usage)

[marcimark]

Yes, I am running one mail account on an Exchange server.

My applications haven't changed, only battery life has!

Why do I have to now run less brightness on the screen, don't use push email anymore and basically only have the phone as a fashion accessory?

There is a major bug in ICS and all I want is downgrade to 2.3.6 again!

[Cummins]

no exchange email, just imap with manual checking...have factory reset it, no third party apps...very anoying!

[Ianford147]

What exactly does a 'factory reset' do?

[Devilman05]

Holdup are you running a exchange email account when you get 14 hours?

[Maximatosis]

Hi all.  I don't know if this is the same cause for your battery discharge problem but this is my experience:

I updated my SGS2 last night and also noticed the battery was being discharged very quickly.  From a full charge is lost about 40% charge in 30mins.  I noticed most of the battery discharge time was being used by the Swype keyboard (about 60% of it!!).  I stopped the keyboard and disabled it in Language and input and that seems to have made a big difference.

When I put the phone down last night at 10:30pm it had about 45% charge remaining.  This morning at 7:30am it was only down to 40%.  I'm charging it back up again now but I think it will be useable again.

Obviously that means the Swype keyboard can't be used so the problem is not really solved, it's just a workaround I can live with at the moment.  Otherwise, I'm liking the ICS upgrade!

[holdup]

Battery life is definitely worse for me, although not as bad as some are experiencing. That being said Id still say it's problematic. The android OS feature is using about 50% of battery on average, whereas with 2.3.6 it was down to about 30%. Also total battery life is still worse. Im getting about 12-14 hrs with light usage and autosync disabled (also have juicedefender installed). This is compared to getting at least 18hrs with 2.3.6 under similar circumstances.

I should also add that Im using an extended battery (2000mah versus the standard 1650mah battery which comes with the phone)

Also Ive done a factory reset already.

Telstra please fix this

[MattieLeung]

Theres no real solution for this, 4.0.3 is known to have issues with the battery life, its quite annoying because i charge it up to full at night, by the time i wake up its at 10% battery life... and i was sleeping...

the even MORE ridiculous thing... is that i'm charging my phone right now and instead of charging, its discharging even further, enough to give me a critial battery life warning...

all we can do is wait for the 4.0.4 update which fixes this issue

[erroma]

Same problem here.

It would be appreciated if a Telstra representative could acknowledge that there is a problem and that they are working on it.

Or suggest a workaround, like downgrading to 2.3.6.

How can that be done the official way?

erroma