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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

Accepted Solutions
Former Community Manager

Re: Galaxy S2 shutting off in idle mode

Hey all, 


As some of you have already noted, an update is available for the Samsung Galaxy SII. 


The update includes fixes for devices that may become unresponsive and/or power down while sitting idle on rare occasions. It also enhances security to protect against malware vulnerability. You will receive a notification on your phone to update. 


NOTE - You must have updated to Android version 4.0 to receive notification of the new software update


As of May 1st, I am no longer serving as the Community Manager for AT&T. This account will no longer be able to accept private messages.

Did a post have a solution that worked for you? Help other people find solutions faster by marking posts that helped you as an "Accepted Solution". Learn about accepted solutions here.

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Message 521 of 620

All Replies

Re: Galaxy S2 shutting off in idle mode

I fear that ATT has gone to the "Pinto Plan".


If you remmeber, back in the day the Ford Pinto was found to explode when hit from the rear.  Ford did an analysis and determined that it would be cheaper to pay off anyone hurt than to recall tens of thousands of cars and fix them.


Now that the SII is a hit and the SIV is coming out... ATT got our $$ and have moved on.   Sigh...

Message 406 of 620

Re: Galaxy S2 shutting off in idle mode

My shutdowns are now happening more often. It is extremely frustrating.

It has been over 7 weeks since Jamileh mentioned that "a fix will be available in the coming weeks". Can AT&T please update us on the status of that fix?


Thank you,



Message 407 of 620

Re: Galaxy S2 shutting off in idle mode

Don't hold your breath. People have been asking for updates consistantly throughout this thread and all they have gotten is the same reply multiple times.


AT&T isn't going to do anything about this, our only hope is that they finally put out 4.1.1 like everyone else in the world has done for the SII

Message 408 of 620

Re: Galaxy S2 shutting off in idle mode

It's pretty clear that our phone's are unreliable after the 4.0.4 update. I've had to revert to an old Nokia flip phone so I won't miss calls and texts. How can AT&T deny that this issue is caused by the update? It's painfully obvious.


Fix this or lose customers. And every customer you lose will tell other customers about AT&T's lousy customer service and high costs.

Message 409 of 620

Re: Galaxy S2 shutting off in idle mode



AT&T is not denying that there is anything wrong with the 4.04 update... I think they more or less acknowledge it. They have chosen however to not do anything about it. Plain and simple. I have written the BBB and the Attorney General and just try to talk anyone I know out of dealing with AT&T on any level (including Uverse). They are comfortable in the fact that they know they have you, the customer, over a barrel so to speak.


Message 410 of 620

Re: Galaxy S2 shutting off in idle mode

Hi Everyone. I've been following this thread since mid-Jan. Posted here a couple of times. Just wanted to let you all know that ATT just sent me a new phone. Last Thursday I filed an online claim with the BBB requesting that ATT either fix my phone or let me out of my contract. Friday morning an ATT Mobility West rep called me to discuss my complaint.  She offered to send me any new phone I wanted, besides an iPhone. She noted that there was no timetable for a SOD fix.  So I had her send me a Galaxy S3, which arrived Monday.  I guess I am happy - at least I have an upgraded and working phone. Just wish it didn't take 2 months to get it resolved. I would suggest you all do the same. If you wait until tomorrow, you might even get them to send you an S4.

Message 411 of 620

Re: Galaxy S2 shutting off in idle mode

what happen to my post....???
Message 412 of 620

Re: Galaxy S2 shutting off in idle mode

If you are the one who posted the CEO contact info... no big surprise.  They immediately deleted it  Smiley Sad

Message 413 of 620

Re: Galaxy S2 shutting off in idle mode

FYI, I recommend subscribing to this thread by clicking "Topic Options" in the upper left corner of the page (unless you don't want to get lots of emails about this). That's a good way to get all of the posts.

Message 414 of 620

Re: Galaxy S2 shutting off in idle mode


Did they extend your contract?
Message 415 of 620

Re: Galaxy S2 shutting off in idle mode

Hi All, I too started seeing this issue since Dec 12.

I have tried all these things in the order(from Dec) and now my phone is much better(may sleep once in 7-8 days) - not sure which one has worked.


1. Disabled the 2nd Clock app from Settings - Applications

2. Turned off Notifications in Google Play

3. Installed Pedometer(runs in background) - so there is always some activity.


I have SGH-I777 and a sd card in my phone and also have not rooted my phone.

Hope it helps.

Message 416 of 620

Re: Galaxy S2 shutting off in idle mode

Great news folks! Just got off the phone with an att rep and she said that they're not able to switch out phones because a fix is coming out. Then I asked her when and she said ' really soon'... I literally started laughing on the phone! I had to hang up.
Message 417 of 620

Re: Galaxy S2 shutting off in idle mode

Upon reading the last post I immediately went into "Software Upgrade" option and did a "Check for Upgrades".

Guess what?


It said

"Your current version sucks. We will upgrade it real soon. Any day now."


S4 is being unveiled today..... Will be calling at the end of the month to get one.

Message 418 of 620

Re: Galaxy S2 shutting off in idle mode

Any update for this may not be "over the air" (OTA)... it may be one where you would have to use Kies. I don't see why it would HAVE to use Kies, but AT&T/Samsung may do it that way. But this most recent update was sent OTA, right, so it would be appropriate to send the fix OTA.
Message 419 of 620

Re: Galaxy S2 shutting off in idle mode

The very last thing I would ever do would be to get a Galaxy S4 through AT&T. If you do you might as well just hit it with a hammer and save AT&T the trouble of breaking it with a software update later and thumbing their corporate nose at you.


Message 420 of 620
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