Galaxy S2 shutting off in idle mode

Contributor

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 (56,730 Views)
Mentor

Re: Galaxy S2 shutting off in idle mode

bmgoodman, check your wifi settings. Make sure "Keep wifi on during sleep" is set to "Always". I haven't had a problem with mine. I do have all the AT&T wifi apps disabled or forced close.
Message 91 of 620 (8,937 Views)
Teacher

Re: Galaxy S2 shutting off in idle mode

[ Edited ]

Hi, I've recently been having this probelm lately as well, and found the only solution to it is to ROOT my phone.

 

[Edited to comply with Guidelines]

Message 92 of 620 (8,893 Views)
Tutor

Re: Galaxy S2 shutting off in idle mode

Using samsung kies light i recently did a firmware replacement .lost my files but gained my phone back still running 4.0.4 but no shutdowns...bluetooth works....and battery life so much better ...question for att and samsung is why not suggest this in the first place?
Message 93 of 620 (8,847 Views)
Mentor

Re: Galaxy S2 shutting off in idle mode

 


scot070 wrote:
Using samsung kies light i recently did a firmware replacement .lost my files but gained my phone back still running 4.0.4 but no shutdowns...bluetooth works....and battery life so much better ...question for att and samsung is why not suggest this in the first place?

What files, or kind of files, did you lose? I don't want to root my phone, but finding the firmware replacement sounds interesting. Where is the firmware replacement procedure outlined? Thanks.

Message 94 of 620 (8,838 Views)
Tutor

Re: Galaxy S2 shutting off in idle mode

It has now been 4+ days since I flashed to this ROM, and so far, no "sleep of death" episodes.  I have rebooted on my own a couple of times, just for good measure, but no lockups so far.  My wife told me that once she heard it make the startup sound on its own, so I assume it rebooted once on its own, but otherwise, no problem.

 

Also, with this ROM, I was able to uninstall AT&T stock/factory apps, whereas with the other ROM's, I could only disable those apps.  I also uninstalled some of the preinstalled bloatware, such as Quiklite (or whatever it was).  Nice!  (It must not be a totally "official" version of ICS.)

 

My battery life seems much better, but I'm also using a different power saver, so it's probably not all the ROM, but it's still better.  I had been using Greenpower, now using Juice Defender.

 

So far, so good.  This is working out much better for me.

 

Mark

Message 95 of 620 (8,820 Views)
Tutor

Re: Galaxy S2 shutting off in idle mode

Sorry, I thought the previous reply would show the link.  Again, here's the link for the ROM I'm using now:

 

http://galaxys2root.com/att-galaxy-s2/how-to-unroot-to-official-ics-on-att-galaxy-s2-sgh-i777/

 

Mark

Message 96 of 620 (8,819 Views)
Mentor

Re: Galaxy S2 shutting off in idle mode

I used the same ROM as alvamark.  I did do a reset before installing so it was clean.  I had also done that with 4.0.4 but it still had shut downs. 72 hours so far and not one shut down. I haven't done a reboot either. 13 hours of use yesterday and my battery still had 33% so I'm a happy camper.  I did not delete any apps, I did disable AT&T hotspots and Accuweather. Forced close on the other AT&T apps.  I'm not using any battery saver apps, just the factory one.  I do have Lookout installed.  Other than that, my phone is rooted but I have not changed any settings or deleted anything so this should not matter. 

 

It's obvious that if you want your phone to work even close to right you need to roll back to 4.0.3 or earlier.  Seems like AT&T could have told us this a long time ago.  

Message 97 of 620 (8,815 Views)
Former Community Manager

Re: Galaxy S2 shutting off in idle mode

Hey guys...

 

Great news Smiley Happy

 

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 98 of 620 (8,788 Views)

Re: Galaxy S2 shutting off in idle mode

@jamileh - Thank you for taking action on this! Obviously, a lot of us will be monitoring this thread for updates on it.  And thanks for communicating what's going on, so we have some hope. :-)

Message 99 of 620 (8,779 Views)
Mentor

Re: Galaxy S2 shutting off in idle mode


jamileh wrote:

Hey guys...

 

Great news Smiley Happy

 

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.


It's really nice to know that AT&T is reading their own forums. I spoke with the NICEST customer service rep on Monday and addressed that exact issue (along with the phone issues) and here it is a couple of days later and AT&T has popped in and acknowledged us.

 

Now we're all counting on you, Jamileh, to keep us in the loop. Thanks!

 

Message 100 of 620 (8,767 Views)
Tutor

Re: Galaxy S2 shutting off in idle mode

It would be REALLY nice if AT&T kept an easily findable repository of legacy firmware such that a user could rollback an upgrade. 

 

My last ROM worked out well, but don't think I clicked "start" easily.  In the back of my mind I wondered if the ROM I was flashing had malware.  Even when I found the ROM, I did a lot of checking to see if the site seemed legit.  This is my first Android phone, I've never rooted a phone before, but the fact that there are so many versions floating around out there reminds me that we must stay cautious, and little paranoid.

 

There should be somewhere which doesn't take hours of searching to find how to roll back an upgrade.  Offering only to "fix it soon" isn't enough.  Luckily, forums like this do provide ways to learn about workarounds.

 

Now I'm feeling a tad remorseful; if there is such a repository, I never found it, and I did lots of searching, mostly to little avail.  If there is such a repository, my apologies for ranting. 

 

Mark

Message 101 of 620 (8,754 Views)
Mentor

Re: Galaxy S2 shutting off in idle mode

Great news that AT&T may have a fix coming.  Will be even nicer if its a Jelly Bean rom with no issues.  

Message 102 of 620 (8,748 Views)
Tutor

Re: Galaxy S2 shutting off in idle mode

Got my phone working great really impressed with battery life and so glad it doesnt shut down.
Message 103 of 620 (8,591 Views)
Mentor

Re: Galaxy S2 shutting off in idle mode

Today was the worst instance of turning off and battery drain so far. Left for work with battery at 100% and 7 hours later the phone was off and when I rebooted it it was at 2%. Not a single thing was running in the background at all. No WiFi, no Bluetooth, no data, nothing.

 

What a terrible time for this to happen - just when all my siblings are here from out of town for our Mother's big birthday and it may be the last time the entire family is ALL together - and my plans for taking lots of photos and videos was foiled! Arghhhhhhh!

 

I hope Samsung is very busy with a fix. I'm trying to be patient.

 

If someone has found a real solution that doesn't involve rooting my phone or any other unadulterated fix, please post what you did. With my luck, if I tried to root my phone I'd probably brick it.Smiley Frustrated

Message 104 of 620 (8,530 Views)
Highlighted
Mentor

Re: Galaxy S2 shutting off in idle mode

Linda Jo, the only real fix seems to be wiping the phone and rolling back to 4.0.3. Mine has worked perfectly for 6 days now. Not a single restart. Battery life has been decent, I start using mine at 6:30am and all this week by 10:30pm I was still usually around 30%. Last night it was 15% but I had some heavy use. Depends on how much I use it which is usually a lot since Its my work phone too.

How you get back to 4.0.3 is the major problem. I've read that some have gotten the AT&T repair centers in their town to do it, Most have had to do it themselves. We shouldn't have to resort to this though, but right now I'm pretty happy with my phone again. You don't have to root the phone to do this but it is pretty technical.
Message 105 of 620 (8,494 Views)
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