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Galaxy S2 shutting off in idle mode


Galaxy S2 shutting off in idle mode

Recently, I noticed that my phone shuts off while in sleep mode. This just happens when I don't check it for a while and the display is turned off. When I do go to check my phone, it's unresponsive, even if I hold down the power button. So far, I've had to remove the batter every time this has happened in order to reboot it.

I just don't get what the issue is. I'm probably missing phone calls because I'm not even aware that my phone is turning off. I feel like after the ICS update my phone has had issues. I already performed a factory reset last week since I was having a problem with the notifications not ringing and vibrating, and now, this is happening on top of that. 

If anyone has any suggestions, that would be greatly appreciated.

I have a Samsung Galaxy S2 i777.

Oh, and another thing, I noticed that my batter is at 95-100% before it shuts off by itself, and once it boots up again it's down to 85-89%. I also feel like it might be an issue with overheating: I noticed that my phone feels hot after I've been using it for a while, like texting or using the internet, and then I set it down to do other stuff when I notice that it's turned off. My phone usually feels really hot too, and the case I have for my phone probably does not help either. 

Message 1 of 620

Re: Galaxy S2 shutting off in idle mode

OK, I had enough, this is the 3rd phone from att the s2 version 4.0.4, no matter what I do the  thing , goes into SOD, I have to remove battery and then start it up, now this is my 3rd phone no apps installed, just the  upgrade that came with it.

going to the bb site and attnorney general site to file a complaint, I suggest other do the same,maybe they get off their lazy as@##@!@& and give us a fix, or the JB update.

Message 136 of 620

Re: Galaxy S2 shutting off in idle mode

This is a huge issue. I am now on 4th S2 phone. Get a refurb on 1/24/13. Same issue Sleep of death. But also added issue of batt not showing charge or discharge. irvine tech center said on 2/2/13 the refurb phone was bad (batt new from att). So I kept everything stock on 2/2/13 s2 refurb and only added google drive, google cal and google voice. The phone came from samsung refurb factory with ICS 4.0.3 and seamlessly upgraded OTA wifi to 4.0.4 (same buld all my other SOD S2 phones had) So I followed all the tech guys instructions on battery conditioning. left phone on charged overnight. phone good this am. then all of a sudden while screen was off..yep did it again. Sleep of dealth!!! Its not an app issue. its ICS plus s2 archtecture. seems to only happen on wifi but then again I am on wifi 90% of the time so that may be coincidental. I know people with s3 with no issues on ATT with jelly bean or ICS 4.0.4 befor ethey got 4.1.


So yes att, google and samsung better get this straight or perhaps blackberry and wondows phones will rise? lol

Message 137 of 620

Re: Galaxy S2 shutting off in idle mode

I am also having this same problem. My wife had the S2 [private] and the S3 [for company].. then she got the iphone 5 and did not even once crashed for over 3 mths now.. I had the S2 for about 1yr 2 mths and mine auto shut down even without doing anything and battery is terrible terrible!!!.. missed calls and dropped calls when scheduling surgeries or talking to insurance for medical claims after being place on a 1hr hold. I am so sick of this phone. Yes it is nice to look at sometimes but the problems are frustrating. I cannot wait for this contract to end. My collegue has the galaxy note and he had same issues. Why Samsung.. make things so nice to look at but do not work well. I cannot keep rebooting a phone all the time. Mine shut down 3-4x a day after updating to 4.04. i am so tired of it. Yes I have check so many Android sites and it seems to work for a few days then it is all back to the same. What I need now is a hammer.

Message 138 of 620

Re: Galaxy S2 shutting off in idle mode

The only reliable fix thus far has been to roll back to 4.0.3 or root and use a differnt Rom.  My S2 continues to work pretty much perfectly on 4.0.3.  Almost a month and not a single reboot.  Why can't AT&T or Samsung figure this out too for everyone?  

Message 139 of 620

Re: Galaxy S2 shutting off in idle mode

@ablan59 - Thanks for keeping us up to date on your success.

How do you keep it from being auto-updated to 4.0.4? I'm not really privy to how this works... does it alert you that an update is ready, and you can choose to ignore it? I thought I'd seen elsewhere in this thread where people were "forced" to upgrade.
Message 140 of 620

Re: Galaxy S2 shutting off in idle mode

I haven't gotten any notice to upgrade, maybe its because I rolled it back but not sure. I did root mine even though I'm just using the factory rom. Not sure if that makes a difference.
Message 141 of 620

Re: Galaxy S2 shutting off in idle mode

ablan59 wrote:
I haven't gotten any notice to upgrade, maybe its because I rolled it back but not sure. I did root mine even though I'm just using the factory rom. Not sure if that makes a difference.

Yeah, I was thinking maybe the rooting made the difference. Have you done a "check for updates" at all, just to see what it says? Or are you scared to?  Don't blame you if you are. :-)

Message 142 of 620

Re: Galaxy S2 shutting off in idle mode

Haven't tried but I do think the rooting may be why since its a different kernal. Maybe thats the trick too to making it all work. The only issue I have even had is a couple times my text message alert sound did not go off. I may have just missed hearing it though.
Message 143 of 620

Re: Galaxy S2 shutting off in idle mode

[quote]please tell me how to roll mine back to 4.0.3[/quote]

I filed a complaint with attoney general and had the president of att secratary call me, she said to call samsung and request a different model and if they ok it, they will send me another model out.

the number to att president [Edited to comply with Guidelines]

I suggest everyone call the president secratary number, flood the number and maybe they will get this fixed.

Message 144 of 620

Re: Galaxy S2 shutting off in idle mode

I dont want to hassle trying to get back to 4.0.3. What pi_ses me off is the last two refurb phones I got came from samasun refurb with 4.0.3 std on the phone. but when I got home it automatically upgraded to 4.0.4. sigh


Oh and I told the moderator to please repost her post below at the start of the thread so epople know what is up


No word yet ona date or if this means we go to 4.0.5 or of this is just a patch for the s2. I know two people on att s3 with no shutdown issues. so the 4.0.4 likely did it to the s2 which is just too old to take the latest upgrade. I know we will not be getting 4.1 but 4.0.5 or 4.0.6 might help. Again as these fixes have to be blessed by google, samsung AND att it takes forever


Re: Galaxy S2 shutting off in idle mode

Hey guys...


Great news :smileyhappy:


We worked with Samsung to research this issue and a fix will be available in the coming weeks. I don't have any specific dates just yet but as soon as I do, I'll post them here. 


I want to note that this is a direct result of you discussing this issue in the forums and telling us what you are seeing. Great job.


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Message 145 of 620

Re: Galaxy S2 shutting off in idle mode

I think the "fix in a matter of weeks" is total B***Cr**. No mention of whether they've reproduced this problem? No mention of Jelly Bean fixing this problem? No mention of JB being rolled out at some date soon (it's already rolled out to S2 devices in other countries). The lack of communication about this problem and solution tells me there is very little substance behind this promise.

Message 146 of 620

Re: Galaxy S2 shutting off in idle mode

@angeleye50 - message #78 has the link to the fix I used. It can be painful and time consuming if you have never done one.
Message 147 of 620

Re: Galaxy S2 shutting off in idle mode

ill just wait. I dont want to be rooting and screw up my 90 day warranty.


I saw a post in one of these threads to try to go back to 4.0.3 from 4.0.4 via kies. I dont see that as possible either. Also lots of people have osted "fixes" which did not work for me

Message 148 of 620

Re: Galaxy S2 shutting off in idle mode

My S2 has not had an SOD for more than 2 weeks. I posted before what I did the only thing I left out was that I have not turned on my wifi. Wifi could very well be the problem. 


Here's my previuos post.


Re: Galaxy S2 shutting off in idle mode

This worked for me:

1. Settings, factory data reset. Back up before doing this. I thought it would reset to GB but it reset to ICS 4.04

2. Reinstall my apps.

3. Delete any battery saving apps like Juice defender or battery indicater apps.

4. Uninstalled updates, cleared data and then disabled all ATT apps like Att Smart wifi, code scanner,family map, hot spots navigator, Qik lite, social hub, google play books magazines movies and tv and google+, Live TV , Movie hub. i dont use any of those apps anyways. Also delete any apps you don't use. Why have them if you dont need them.


I can't think of anything else I did. I havent had a SOD for over a week now!


Message 149 of 620

Re: Galaxy S2 shutting off in idle mode

@neshadha, thanks for taking the time to post the detailed instructions. It was extremely helpful. I was amazed that I even got Kies to cooperate for this re-download. Prior to the re-download, I had tried all the solutions people were suggesting. The phone was shutting off less and less as time progressed, but it still happened about once every two days. Even though I have an i9300, the SGH-i777 is truly special as to input response "snappiness." I might add that at step 9, I had to disconnect the USB cable before the phone rebooted. Prior to disconnecting the USB cable (there was a Kies message saying the same), the i777 screen was alternating between images of a charging battery and the Android robot with spinning internals. There also seemed to be a installation/downloading progress line at the screen's bottom. Played it safe and left the cable connected but no change after a few hours. Disconnected cable and the phone rebooted. Doing a factory wipe next.

Message 150 of 620
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