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Posted Dec 29, 2011
7:46:19 AM
Galaxy S II 2.3.6 update kills battery life

I am really disappointed with both AT&T and Samsung for releasing this official update and then not even admitting that they have a problem.  My battery life was cut in half immediately after I received the official 2.3.6 update.  Even when the phone is on standby it will now barely last 12 hours.  Prior to the update I only had to charge it every other day.  Has anyone been able to get AT&T to admit that the 2.3.6 ROM is the problem or have you all been told the phone/battery needs to be replaced?

Galaxy S II 2.3.6 update kills battery life

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Dec 29, 2011 8:36:17 AM
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I've noticed the same thing... ever since the update, the battery life has tanked.  I'm lucky to get 10-12 hours in standby.  I have tried various different things to extend the battery life, but nothing has had any significant impact on improving battery life.

 

I haven't had the patience to open a problem report with AT&T yet...

Steffen - Palm Springs - CA

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Dec 30, 2011 7:03:41 AM
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I have been home for the holiday period so I have had my Wifi turned on this whole time.  Yesterday I turned off the WiFi and now have a totally different battery use to report.   With WiFi off and very little use of the phone my battery is now at 80% after 24 hours with Android 2.3.6

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Dec 30, 2011 10:30:55 AM
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You guys should had rooted a custom rom...

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Dec 31, 2011 7:34:26 AM
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BCM4330 (wifi/Bluetooth) support in UCKK6 is completely and totally screwed up.

 

Bluetooth HID is completely and totally broken

There are LOTS of router compatibility problems that didn't exist before

Last but not least, a wacky proprietary feature of the wifi chipset that I have never seen do anything useful goes nuts and fires wakeup interrupts as fast as once a second.  The feature is called Bluetooth AMP (Alternative MAC and PHY) which apparently tries to route Bluetooth over Wifi.  I've never seen any evidence of this feature operating properly, only of it going insane and waking up the phone all the time.

 

Leaks for the Samsung Infuse (which have the same wifi chipset) have the same problem.

 

To confirm you are having the same problem, read http://forum.xda-developers.com/showthread.php?t=1308030 and perform the Wireshark capture step when you are experiencing drain.  In the capture, look for stuff like this:

 

      1 0.000000    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
      2 1.230671    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
      3 2.457567    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
      4 3.688167    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
      5 4.915498    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
      8 6.145554    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     10 7.374758    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     11 8.603045    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     12 9.832158    9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     15 11.061042   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     16 12.289468   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     19 13.518508   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     20 14.746922   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     22 15.976068   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     25 17.204985   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     26 18.433658   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     27 19.662156   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     28 20.890973   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     29 22.120120   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     30 23.144282   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     31 24.168026   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     32 25.396524   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     33 26.625761   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     35 27.854481   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     36 29.083182   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     37 30.310235   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     38 32.367309   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     39 32.747929   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II
     40 34.402309   9a:0c:82:63:72:56     SamsungE_63:72:56     0x886c   74     Ethernet II

 If you see packets like this (with a slightly different MAC address) once every second, you're experiencing the same problem.

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Dec 31, 2011 8:50:50 AM
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Thanks Entropy512.  That explains exactly what I am seeing.

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Jan 1, 2012 7:21:12 AM
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kyrax13 wrote:

You guys should had rooted a custom rom...


This is true for this and many more reasons but rooting isn't for everyone so most have to live with AT&T/Samsung updates which can be quite painful..  I stated when I bought this phone back in October i wouldn't root or mess with this phone but finally went this route looking for better battery life and now wish I did it back in October lol..  As good as this phone is stock its absolutely INCREDIBLE after rooting and putting one of the many truly polished roms that are available. After trying almost all the ones available the one I found I like the best has made my battery life much better, the phone is much quicker (no more lag) and for all the customability the stock OS gives the possibilities with a custom ROM is almost infinite.. What really surprised me is the dedication the developers over at the "root" forum have for their custom ROMs, fixes  and changes come to us sometimes within minutes.. 

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Jan 1, 2012 8:15:43 AM
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Edited by roblco on Jan 1, 2012 at 8:16:42 AM

I'm having the same issue. However, I'm giving them (AT&T and Samsung) the benefit of the doubt. Some people's phone got better after a few recharges or recycles. After reading that some people actually got "better" battery life after upgrade, I have a suspicion that they "picked" a few users to be the beta testers of whatever "feature". I am predicting that after a few days (without) monkeying around with anything, it will stop doing what it's doing when wifi is on.

 

Otherwise, "yes" I will root the phone and install a custom rom - suggestions welcomed.

 

 

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Jan 1, 2012 9:44:07 AM
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pmt1209 wrote:

kyrax13 wrote:

You guys should had rooted a custom rom...


This is true for this and many more reasons but rooting isn't for everyone so most have to live with AT&T/Samsung updates which can be quite painful..  I stated when I bought this phone back in October i wouldn't root or mess with this phone but finally went this route looking for better battery life and now wish I did it back in October lol..  As good as this phone is stock its absolutely INCREDIBLE after rooting and putting one of the many truly polished roms that are available. After trying almost all the ones available the one I found I like the best has made my battery life much better, the phone is much quicker (no more lag) and for all the customability the stock OS gives the possibilities with a custom ROM is almost infinite.. What really surprised me is the dedication the developers over at the "root" forum have for their custom ROMs, fixes  and changes come to us sometimes within minutes.. 


What do you mean rooting isn't for everyone? Not everyone can have access to a home computer and their phone at the same time?

 

 

Also what rom/kernel are you using?

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Jan 1, 2012 9:51:40 AM
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I did my part!

 

Pearl: Hi, thank you for contacting Samsung Technical Support. How may I help you today?

Visitor: My battery drains very quickly when on wifi after upgrading it to 2.3.6.

Pearl: I am sorry to hear that.

Pearl: I understand that the battery is draining quickly after updating to 2.3.6. Am I correct?

Visitor: well.. I am not the only one. I have read from multiple forums and people are having this issue

Visitor: yes

Pearl: Thank you for the confirmation.

Pearl: May I know the model number of your phone ? You can find the model number beneath the phone's battery which generally starts with SGH, SCH or SPH .

Visitor: I777

Pearl: Thank you for the information.

Pearl: Are the GPS, bluetooth turned off when not in use?

Visitor: yes.

Pearl: Have you performed a soft reset on the phone and check for the result?

Visitor: by soft reset, you mean power down, remove the battery and restart? Yes.

Pearl: Thank you for the information.

Pearl: As you have tried all the troubleshooting steps and the issue persists, we can try factory reset on the phone. Factory reset will delete all the settings, applications and data saved on the phone. Pearl: Shall I provide you the steps to reset the phone? Visitor: By the way, we don't have to fix it at this moment. I just need someone in Samsung to monitor the forums and propose and solution. People have tried different things and I don't want to do it if it is to no avail. Visitor: that's including the master reset. Pearl: Sure, I will forward this issue to the higher department who will check the issue and try to resolve it. Pearl: Yes, factory reset is master reset. Pearl: It will delete all the data saved on the phone and restores the phone to factory defaults. Visitor: exactly. and I prefer not to re-install everything. Visitor: If it's a real solution I would do it. However, this was already done by some and it didn't help. Pearl: I apologize for the inconvenience caused. Visitor: Can you get your QA department figure out what's really wrong and send me a real fix? Visitor: As I said, it doesn't have to be fixed now. It can survive a day, so I can deal with it for now. Pearl: Our team will search for the resolution and when it is available it will be posted in the Samsung website. Visitor: great! thank you!

 

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Jan 10, 2012 11:30:20 PM
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I called Samsung Support and they helped me to change the wifi sleep policy from "never" to "when screen turns off". This resulted in using up less than 10% of my battery last night from 11PM to 7AM.

Action Taken:
1. Settings
2. Wireless and Network
3. Wifi Settings
4. Click Menu Button (next to Home Button) and Select Advanced
5. Select Wi-Fi sleep policy
6. Change it from "Never" to either "Never when plugged in" or "When Screen turns off". 
7. One person reported success rebooting their phone after making these changes. For me I did not have to reboot.

I also thought that this may increase my hspa+ data usage, but when i checked my history it's hardly noticeable compared to before update to 2.3.6, after update to 2.3.6, and finally to this recent update to wifi sleep policy.

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Jan 11, 2012 7:00:46 AM
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It's a poor bandaid for the problem - best battery life is on properly functioning wifi.

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Jan 13, 2012 8:44:11 AM
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Yes, this fix worked for me.  I inserted pictures of my phone's battery useage before (notice how much the Andiroid OS used) and after changing Wi-Fi to "When Screen turns off"BeforeAfter

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Jan 17, 2012 8:42:53 AM
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Edited by jackal2001 on Jan 17, 2012 at 9:33:03 AM

I am also having this same problem.  2.3.6 and with wifi on and using apps like ATT Smart WiFi, juicedefender, etc my phone was dead in 5hrs at 50% leaving it sit on my desk at night not even touching it.  Juicedefender was set to only check apps every 30 minutes, otherwise disable wireless connection.

 

Problem is when wifi is enabled for a short time either by an app or coming out of standby the Android OS will eventually get to over 90% battery usage and kills the phone.

 

 

I uninstalled ATT smart wifi, juicedefender, and disabled Gmail syncing.  Also GPS is disabled(which I never have on anyway).  Bluetooth is on.  I DISABLED WiFi on the phone, powered it off and back on with at 100% battery. 

Its been 5hours and android OS is at 24% and battery is at 98%.

 

Seems to be a serious problem with WiFi and Android OS killing the battery.  I really wish you could have an option (in the OS) to search for wifi signals instead of having the phone constantly do it.

 

I just got off a chat with Samsung and it was useless.  They said there was something wrong with my phone and I should send it in for service.  I'm not doing that.
I guess I'll have to call Samsung next.

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Jan 18, 2012 6:23:18 AM
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As discussed before - there is a firmware bug in UCKK6.  It has nothing to do with "searching for signals" - the wifi/Bluetooth chip (Wifi and BT are implemented using a single combo chip that does both) just plain goes into a wacky state and starts firing interrupts related to an esoteric feature of the chip no one actually uses.

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Jan 18, 2012 9:27:15 AM
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Looks like I spoke too soon.  Same thing happening where the Android OS is taking most of the battery life.  I thought it may be because I killed a bunch of processes instead of the WI-FI fix, but I tried doing the same thing and the OS is still taking most of the battery life.  Not sure why it seemed to work the first time around.  Checked settings and WI-FI is to only work when the screen is on.  I can't even get a day with minimal usage out of a full charge.  I got to admit though, voice recognition does seem to work better, although I really don't use it.



I am very unhappy that AT&T 'hijacked' my phone and forced these updates on my phone and harassed the living h*ll out of me by having my phone vibrate and dump me out of what I may have been doing a couple of times a day until I finally caved in and installed the update.  Now I have to deal with this crap, where as before everything was OK.

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Jan 19, 2012 8:44:57 PM
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I have just recently noticed this problem as well. I did the software update a few days ago. I hardly use my phone at all during the day but by the end of the day the battery is critical.

 

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Jan 20, 2012 7:25:10 AM
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I called them today about this issue and the person told me they have not received any complaints about this battery issue. He was probably just following a templated response, but we need people to call and complain directly not just in these forum that looks like noone is following from ATT.  

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Jan 20, 2012 7:55:32 AM
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Even if (that's a big IF) AT&T is going to fix this problem starting today, it will still take about 3 months from now to have a new firmware rolled out (that's how long typically the process will take) at the best. That will also mean they will have to stop the ICS upgrade testing process while testing this interim firmware fix. So, that's a further delay on ICS.

 

Nothing good can come out of it. And I'm pretty sure AT&T will ignore all the complaints (as they always do) as long as it doesn't affect the bottom line.

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Apr 3, 2012 8:51:19 AM
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Last month, I bought my first smartphone... the Galaxy S II (not skyrocket)...  for two main reasons... AT&T had online-only sale on it for $9.99 and AT&T's press release includes SGSII in their ICS list. 

 

So I am seeing this problem, it looks like (phone out of the box has 2.3.6).

 

Can AT&T give a reply here stating that they are aware of this at least and its on a list....?

I'm not holding my breath for if/when it might be fixed, I understand foxbat121's comments, but it would be nice to know its on a AT&T/Samsung to-do list.

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Apr 3, 2012 11:32:09 AM
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It doesn't appear to be on AT&T's to-do list.  In fact it seems to be at the top of "break ALL THE ANDROID DEVICES and keep Apple happy!" list for them.

 

It's on Samsung's "We already fixed it and released updated firmware to international customers" list.

 

This was a problem in I9100 XWKK5 and I777 UCKK6.  It was SOLVED in I9100 XWKL1 (first build of December 2011 for Europe.)

 

AT&T has SOLE responsibility for the fact that their users must continue to deal with this issue unless they wish to void their warranty by installing ported international firmware.

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Apr 3, 2012 12:46:56 PM
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I agree entropy. att is run by clowns who don't give a darn about its users. Pretty sad for such a big company. You would think that keeping their customers happy would be priority #1. I guess not.

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Apr 4, 2012 7:43:18 AM
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Behold the beauty of the oligopoly!  So few carriers exist here that they don't really need to compete.  Your disgruntleds move to one of a few competitors and your competitors' disgruntleds will come to you.  Everybody wins (the companies, that is).

 

True competition tends to drive prices down while adding features.  What we have in the U.S. mobile market, on the other hand, does neither.

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Apr 4, 2012 11:10:12 AM
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Yup.  I'm seeing reports that the I777 ICS leak may have the same problems...

 

Fail.  Samsung fixed it back in December for I9100 Gingerbread, and I9100 ICS has none of the same issues...

 

Great going AT&T.

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Apr 6, 2012 6:43:04 PM
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  Just got off the phone with ATT.  After I explained the problem, ATT pointed finger at Samsung as expected.  Instead of being forced to hangup and call Samsung, ATT was willing to do a 3 way call with samsung. 

 

  After I explained the issue to Samsung, he indicated that it was a "software" issue and has nothing to do with Samsung as Samsung didn't create that software.  Samsung and ATT cannot tell me who is responsible if there is a software issue at this point.  I asked to be escalated and now waiting for call in 72 hours.

 

  My feeling is that ATT should be providing a better level of service to a customer that can no longer use the phone that he purchased and still pay for monthly.  It is sad that there are just a bunch of finger pointing and no one is willing to take ownership of the issue.  Not as if this issue is hard to spot (even though ATT claim that they have never heard of this).

 

 

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Apr 9, 2012 8:11:38 AM
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Did you mention, with AT&T and Samsung listening, that I9100 XWKL1 and XWLA4 fixed this issue?

 

Feel free to give them my contact info - I've got some pretty detailed info on the nature of the issue.  I will PM you my email address.

 

Technically, the problem lies with Broadcom software (probably the wifi chip firmware) - but Samsung DOES have fixed firmware in their possession and it is present in their Gingerbread XWKL1 and XWLA4 releases.

 

http://forum.xda-developers.com/showthread.php?p=20877856#post20877856

http://forum.xda-developers.com/showthread.php?p=22788730#post22788730

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Apr 9, 2012 10:02:17 AM
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Thank you Entropy.  I did mention those information but I was told that since Samsung and ATT are not the "software creater", it is not their responsibility.  I kindly asked who would be responsible in this case, neither Samsung or ATT were able to find the information but ATT has escalated that to "urgent care management case" and will get back to me in 72 hours.

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Apr 9, 2012 10:23:58 AM
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As the entity releasing the complete firmware package, it is Samsung's responsibility to integrate and test the components within that package.  If one of those components (such as the Broadcom BCM4330 firmware) misbehaves, it is their responsibility to put pressure on their vendor to fix the problem.

 

If a fixed version of the Broadcom firmware that did not exhibit this problem did not exist, then Samsung might have a leg to stand on here - However, fixed Broadcom firmware IS available, and Samsung IS in possession of said firmware and released it as part of the I9100 XWKL1 and XWLA4 firmware packages, among others.

 

Given that Samsung fixed this problem in December 2011 with the XWKL1 firmware release (and later releases) for the GT-I9100, responsibility for this faulty update and the lack of any fixes from December 2011 until April 2012 lies ENTIRELY with AT&T.

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

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Apr 12, 2012 5:41:15 PM
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Edited by ShaunMN on Apr 12, 2012 at 6:31:52 PM

Sorry for not reporting back earlier.  I finally got a call back from ATT 2 days ago.  The customer representative started with "well, it is a battery issue and you have a smartphone which battery can be used up quickly".  I explained the whole thing again to her and she basically just totally cut me off and said "well you can still use your phone can't you?".  What the heck kind of customer service is that? I was pretty upset at that point and asked for her supervisor.  She then promised to do more research and get back to me yesterday.  Also to add, she also claims that ATT has never heard of such issue just like all of you.

 

She called me today offering to replace my phone with another model which I consider an acceptable solution if there is a phone that I deem comparable or better.  She sent me a list to look over which consist of 7 free phones, atrix2, gs2 and infuse.  All of them are older and inferior phones that ATT has to offer.  Some of them don't even run gingerbread, or not supporting hspa+.  The only ones that is even close to galaxy s2 is samsung infuse and motorola atrix which i still consider inferior (someone please give me their opinion on this).  I understand the GS2 is one of the best phones out still but at least throw in skyrocket or note to be fair.  What is a motorola flipside, you got to be kidding me? I don't think I can take the offer.

 

[Per Guidelines:  Keep it Relevant and Appropriate]. because I strongly believe that it is not right that I was forced to update (with the annoying intrusive reminder), then it rendered my phone almost useless.  The agreement between ATT and the consumers needs to be more balanced to protect both party, not just one.  I can totally root my phone and flash a custom rom to fix the issue, but fairness and accountability is the principle here.  Frankly if their customer service is more caring than combative I might be less inclined to do so in this case.  I don't understand why they insist on convincing a customer to be at fault in this case and that I have to take some kind of workaround or take a loss of value here.

Re: Galaxy S II 2.3.6 update kills battery life

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Apr 13, 2012 6:22:14 AM
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Edited by Entropy512 on Apr 13, 2012 at 6:24:08 AM

Ask for a refund on the cost of the phone, use it to buy an HSPA Galaxy Nexus or international Galaxy Note (GT-N7000).

 

I know of one guy who did that.

 

AT&T are clearly clueless - this smartphone is NOT a fundamental battery drainer as anyone running international firmwares on it can attest (My drain when connected to a wifi network is less than 0.5%/hour), but the UCKK6 update is COMPLETELY BROKEN.

 

Firmwares that I've confirmed work fine:

I9100 XWKL1

I9100 XWLA4

I9100 XXLPQ and XWLP2, XWLP7 seems good too

Cyanogenmod 9 mostly works - there's a small issue that was present in XXKI3 but it's not the main issue UCKK6 has.

 

Firmwares confirmed to be broken:

UCKK6

XWKK5

(note a pattern here - all built in mid-late November.)

-------------- CyanogenMod 9/10 device co-maintainer for: SGH-I777 (AT&T Galaxy S2) GT-N7000 (International Galaxy Note) GT-N8013 (Galaxy Note 10.1 Wifi)

Re: Galaxy S II 2.3.6 update kills battery life

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