Samsung Galaxy S Series

[Jimbo96]

Every couple of days, when my phone has plenty of enough charge my phone decides to reboot, sometimes whilst I'm texting, on the internet and playing games other times it will be in my pocket or on my desk next to me. I would like to know what's up with my phone and why does it do this. Does it need a looking at?

Thanks Ben

[sakan]

My Galaxy S2 has been rebooting/restarting randomly every few days since I updated the firmware to 2.3.5. On top of that it started freezing and sometimes even fail to connect to the vodafone network and I had to restart it to get it to connect.

I tried factory reset but that didn't solve the problem.

[Jimbo96]

Also my phone has started doing this over the last 2-3 months.

[James]

Hi Guys,

So we can look at this in more detail for you the first thing that you will need to do is to send the phone away for a free of charge warranty repair.

If this then continues after the repair please let us know and we will follow this up for you.

James

[rsbrowndog]

I am having the same problem as other posters here so it sounds like I need to send my phone for a repair also.

Unfortunately the link posted above doesn't work, can someone provide an alternative?

Cheers,

Ryan

[Northern-dj]

If your firmware is 2.3.3 then it will randomly reboot as this was one of the bugs on that firmware and has plagged many devices 

The previous devics the Galaxy s had this and a update was rolled out and fixed this 

So if you get a option to upgrade then this will fix the Bug 

[davedoolan]

I am on v2.3.5 but having the same problem.....

Tempted to try a factory reset - can anyone suggest a backup program?

[thesoupdragon]

@davedoolan

Connect your phone in Mass Storage mode.

Then just copy your content to your PC.

[GoNz0]

I thought after getting my 5 day old phone swapped for a new one the reboot issue was over and done with, 5 days since it was replaced its just done a random reboot again..

anyone else have this issue with the S2 ?

its only been up for an hour as i restarted it

i hope its just 2.3.5 bugs that ICS 4 will sort out...

[Northern-dj]

There is a random reboot problem, if it keeps happerning then it is a problem, but the odd one it is the big it tends to affect most gingerbread devices so hopfully ICS will sort it .

[RuthMaxwellHuds…]

I have the same problem, went to vodafone store & I was advised to update the software. I have no idea how to find out what version i'm on, or even what software i'm currently on, & how do i update it? I was also advised to install kies to back everything up, but i heard when i bought the phone, that kies is a bad idea. I don't know how to install/use kies either. Does it back up everything - messages particularly, downloads, contacts? Any help out there gratefully accepted.

[GoNz0]

is this the soft reboot where you hear the startup sound, watch the splash screen then find yourself at the sim lock straight away unlike a ful rebooot that can take 20 seconds ?

i think its 2.3.5 to blame as those on ICS dont have this any more.

[Northern-dj]

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RuthMaxwellHudson4 wrote:
I have the same problem, went to vodafone store & I was advised to update the software. I have no idea how to find out what version i'm on, or even what software i'm currently on, & how do i update it? I was also advised to install kies to back everything up, but i heard when i bought the phone, that kies is a bad idea. I don't know how to install/use kies either. Does it back up everything - messages particularly, downloads, contacts? Any help out there gratefully accepted.

---

Wow what a lot of questions

OK

First thing

on your phone

Press menu > settings > about phone

Then tell us what the baseband Version is ?

Firmware  Version

we will tell you then what is on your phone

Now Kies is not as bad as it used to be

with kies you can back up contacts music pictures but not messages

Now i use Kies and back up to Microsoft outlook works every time, now your messages can be backed up to gmail using a app from the market just search for sms to gmail this will back up your messages to gmail and you can view them via a computer online.  

Now apps are allready backed up on the Market, Other downloads are stored on you internal or external sd

These can be backed up setting your phone to mass storage mode it's then like a usb stick.

Kies can be down loaded from

http://www.samsung.com/uk/support/model/GT-I9100LKAXEU-downloads

down load it and install it, make sure your phone is not in mass storage

open kies up then plug in your phone

Your pc will do a phew things, this is to install the phone, now top left of kies it will say connecting, it might not connect first time

Now windows will open a box this is the auto play menu just minimize it.

If kies still has not connected un plug wait ten secounds then re connect

with in kies you can then go to the back up section there is a good help guide on there if you get stuck

[GoNz0]

2nd time today, following the same pattern as the phone i had the week before, fine for 5 days then stats acting up with the reboots...

[spikey_richie]

I found moving apps back from the sd card to the phone helped to significantly reduce the number of reboots. Not had one for about 3 weeks, and it used to be a regular occurrence with apps on sd.

[spikey_richie]

I found moving apps back from the sd card to the phone helped to significantly reduce the number of reboots. Not had one for about 3 weeks, and it used to be a regular occurrence with apps on sd.

[wintee]

The thing to realise with these reboots is that they're a crash in the phone's operating system. The same way windows occasionally blue screens and reboots your PC.

There's one of two causes for this. Either the Operating system itself is buggy and causing the crash, or an application (via a request to the operating system) causes a crash.

Error messages, warnings and diagnostics from applications are all stored in a logfile on your phone, and if you're a) lucky enough that the crashing feature writes the error to the log and b) technically adept, you can read this log and get some idea of what was going on.

A question for those who have had the crashes occuring.

What MicroSD card do you have installed in the phone?

Is it a new one? Or an old one from a previous phone?

Do you know what class of MicroSD card it is?

I had problems with my old Sony Ericsson Xperia (What a hunk of junk that was) because the MicroSD card in it was too slow (low class card). I switched card to a newer/faster one and the problems went away. I don't know if this is an issue for the S2, but if you are going to install apps on the SD then ensure you have a decent SD card in the phone.

[kennybase]

Is there an app that you have installed just before the restarts happen? 

[Northern-dj]

This is deff a third party app problem, and not the phone if the phone went in for repair the first thing they do is a factory reset and wipe of the internal sd, then they test the phone.
now the problem here is pinning in down to what app is doing this
if you gave us a list of apps, not games as they don't use the phone in the same way seems very strange your on two that have this

[wintee]

DJ - you're wrong there, technically

Applications cannot directly crash the phone as all the hardware resources are managed by the kernel. They make requests to access them via the kernel. What's probably happening behind the scenes is that one of these requests is bad and has caused the kernel to crash.

It's the kernel's fault that the phone has crashed becuase it's supposed to be fault tollerant and deal with bad cases without bringing down the phone. It could be a hardware fault but to have a second phone thats faulty would be incredibly rare.

So yes, it's likely the apps fault for doing something stupid. Or it could just be a bug in the kernel. Or it could be a resource conflict.

I won't go on as the details don't matter. What matters is that the guy has a problem.

Like NDJ says, provide a list of the apps you installed. We may be able to identify the ones that are likely to run in the background. You can then start taking these off the phone in an effort to identify which one is buggy.