yashsingh1/xdaforums huggingface dataset:
[Galaxy S I9000 Q&A, Help & Troubleshooting] border43:
Alright, ill try that 850 fix. I really did not want to do anything like that to my phone as I did not want to screw around with too many settings as I dont want to screw anything up. But I did it, and it seems to be working for now. Ill post back in a few days to say weather it has stayed on, or gone coma.

Thanks :)
[Galaxy S I9000 Q&A, Help & Troubleshooting] border43:
Wikipedia: In Canada, GSM-1900 is the primary band used in urban areas with 850 as a backup, and GSM-850 being the primary rural band.

Does this mean anything at all for speeds? I dont want to have to live with reduced 3G network speeds because my phone is a POS. If 1900 is the primary band, does this mean that it will have better speeds than 850?? Or am I completely out to lunch?

Sorry, I just don't know much about cell frequencies and bands.
[Galaxy S I9000 Q&A, Help & Troubleshooting] border43:
Sorry for the multi posts as well.

I found this:

The 1900 MHz band is used for voice in Edmonton & Calgary.

The 800 MHz band is used for data in Edmonton & Calgary.

Everywhere else in the province uses the 800 MHz band for voice & data.

(this is for the HSPA network only)

Does this mean that I can expect limited voice call quality/coverage in Edmonton? This is where I spend 95% of my time...
[Galaxy S I9000 Q&A, Help & Troubleshooting] PatcheZ:
i am in edmonton and i posted about forcing band selection to WCDMA waaaay back (hundreds of posts ago...)

just set band selection to WCDMA 850 AND 1900

i've only ever had the coma in one place (a few times on the same nite) in over a month.
[Galaxy S I9000 Q&A, Help & Troubleshooting] Keatonm:
I kept on having the coma issue even after forcing the band to 850. Nothing except turning the apn off worked. I was hesitant to try unofficial firmware but after flashing Voodoo Doctor Edition v1.3 yesterday, I'm liking it so much I don't think I could go back to official roms anymore. Coma issue has disappeared. Couldn't be happier.

Besides, didn't Samsung say something about Froyo at the end of September? This is all starting to sound veeerrryyyyy familiar.:D
[Galaxy S I9000 Q&A, Help & Troubleshooting] renerz:
In Calgary. I have had numerous comas since switching to just 850. Hasn't seemed to fix anything.
[Galaxy S I9000 Q&A, Help & Troubleshooting] ek-spoz'd:
I went for lunch today and didn't bring my phone with me. When I got back, coma...or so I thought. I tried phoning it, instant voice mail. Tried to reboot with ten second pwr button push. nothing. I took out my battey and then tried to reboot. Nothing.

What it was, was that my battery was completely dead! I had half a batt before lunch too. Mote evidence I think that coma state is not an off state but rather a schizo state of some sort. In this case it ate my battery before I noticed it.
[Galaxy S I9000 Q&A, Help & Troubleshooting] cyberwolfmd:
A guy at Best Buy told me to leave one app run and so far my Galaxy S hasn't shut off by it self yet. Cross fingers.
[Galaxy S I9000 Q&A, Help & Troubleshooting] mymanchris:
I have had a similar battery issue happen where the battery status stays at 75% or so and drains normally but does not update the status display (even with Battery Time). Suddenly it shuts down completely because the battery is drained despite the display reading 75% just prior to the shut off.

On a plus note, since following charsplat's 850 trick, I haven't had a single coma. What a nice phone when it actually works! I was getting anywhere from 2-12 comas per day previously.

I've been chomping at the bit for froyo in the hopes that it would solve this issue, but now that it seems to be resolved (keeping my fingers crossed) I can wait just a bit longer without risking throwing it out the window.

P.S. In Calgary running JH2.
[Galaxy S I9000 Q&A, Help & Troubleshooting] PermaFried:
I did the 850 band trick and works like a charm. Usually I locked up about 10 times a day at work. I did not lock up at all yesterday after switching!

I even had faster 3G!
[Galaxy S I9000 Q&A, Help & Troubleshooting] blazeguard:
hi, read every page! after i got a galaxy s three days ago!! bummer shoulda researched!! coma issues first day! in vancouver bc. did the 850 fixer half an hour ago and all is fine, see if im late for work again tomorrow......
[Galaxy S I9000 Q&A, Help & Troubleshooting] alumine:
Just as an aside, this is why I've always stuck with my N95 to use as my alarm. Reliable as ever :)

Plus so far it's the loudest one that I've got, so yeah.
[Galaxy S I9000 Q&A, Help & Troubleshooting] Skycake 21:
I did the 850 only trick. I live in calgary. Before changing the settings I would get comas constantly going from low to no signal. I would get them in high signal areas but at a slower rate. After changing the setting, I am at nearly 240 hours up time. Jh2 2.1.
[Galaxy S I9000 Q&A, Help & Troubleshooting] sherazshahid1:
almost 85 hours after the WCDA 850 trick and everything is going well with no comas. As I wrote earlier, I have noticed that the signal jumping issue has been resolved and I am getting much better signals overall. I am in Vancouver on Bell.
[Galaxy S I9000 Q&A, Help & Troubleshooting] renerz:
Maybe I've done this wrong.

When you finish the 850 trick, the only entry on that page that should have an asterisk is 850 only right?
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
Is there any way we can establish the batch out phones came from? They are made all in the same place then shipped elsewhere I believe.
[Galaxy S I9000 Q&A, Help & Troubleshooting] digi-geek:
I tried this on my wife's first SGS and it did not work (in Edmonton). Her replacement has been much better straight out of the box, but still comas occasionally. I might try limiting to these two bands once again and see if it makes any difference with this newer one.

Whatever is going on with the SGS - this second replacement is working much better. Same firmware and build - go figure. I sure hope 2.2 fixes this issue.
[Galaxy S I9000 Q&A, Help & Troubleshooting] Skycake 21:
Correct.
[Galaxy S I9000 Q&A, Help & Troubleshooting] PatcheZ:
i don't think that forcing the bands to wcdma 850/1900 is actually 'fix' per se, as my phone is still able to go into comas :s it does help however

digi-geek, as i mentioned before, might be beneficial (at least for now) to find out the area in which these comas occur so that you can avoid them (either by not going there or turning off data)
[Galaxy S I9000 Q&A, Help & Troubleshooting] bestbeancounter:
How is the call quality when it's forced at 850 or forced at 1900?
[Galaxy S I9000 Q&A, Help & Troubleshooting] ek-spoz'd:
That is correct from my understanding of this thread, 850 only. Some people seem to imply 850/1900 should be selected, but if I remember posts in this same thread indicate you'll still have the coma problem. So I'm sticking with 850 only personally...and haven't had any problems with it. Just hoping 2.2 will allow the phone to auto-select again without problems...
[Galaxy S I9000 Q&A, Help & Troubleshooting] emdoe:
I do agree that it is related to somewhat location. It only dies when I'm in the elevator inside of concrete building. But still mystery that it only started happening last week. I have used it at the same location more than 2 months without this problem. It may be combination of SIM and Location.... Please anyon has a solution? This is very annoying and unreliable..

Rooted and OCLF applied GT-I9000M with 2.1-update1 running JH2 on Bell Mobility.
[Galaxy S I9000 Q&A, Help & Troubleshooting] louie604:
The only temporary fix that's working for me right now is to restrict the band selection to the 850 band in service mode mentioned a few pages back... other than that, i would say we can all take a gamble and wait till Samsung releases froyo for the i9000 series and hope that it fixes the problem.
[Galaxy S I9000 Q&A, Help & Troubleshooting] emdoe:
I don't think it actually shuts off. It just not wakes up from sleep..not responding the buttons. It drains the battery during this mode.
[Galaxy S I9000 Q&A, Help & Troubleshooting] emdoe:
So far so good. I came through the same location where I had this problem but the phone still alive. I will keep monitoring it and update within 24hrs. I am also going to try with low battery if that helped causing the problem.
[Galaxy S I9000 Q&A, Help & Troubleshooting] digi-geek:
Yep, simply using APN On/Off temporarily addresses the issue. No fix by any stretch of the imagination though.

We didn't leave her old phone locked on those bands long enough to check. Strangely, no coma today with her new phone in the known coma area (Coma'd Thursday though). If the problem persists I will try lock to the 850 and 1900 bands again.

I'm VERY hesitant to do anything with this phone because its "mostly" working. I'm afraid to touch ANYTHING in the event it causes more problems. Will continue to monitor and update forum with anything useful :(
[Galaxy S I9000 Q&A, Help & Troubleshooting] louie604:
Ok, so here are my results.

I got home about 30 mins ago with my phone locked on to WCDMA 1900. My phone did not go into a coma yet, but I tried running the speedtest.net app and unfortunately it wasnt able to do the test as my phone would just suddenly drop signal and doesn't get data back unless i turn on airplane mode first and then back off.

I've set it back to the 850 band and everything works perfectly. I, too, however am wondering about the call quality of the 850 band, but I guess I'll find out soon enough once I get a call.

So with all this, I think the phone has a hell of a time with the 1900 band... I tired 2100 on Bell network just for the hell of it and of course it doesnt work. lol.

My recommendation after all this is: lock your phone to just WCDMA 850 band (and to be extra safe select the GSM 850 too) and it should stop going into comas. That or use that APN on/off app. And above all, for all you devoted i9000 users (or those who are just simply unable to change phones for whatever reason like me), wait till froyo comes out and cross our fingers that it fixes this problem.
[Galaxy S I9000 Q&A, Help & Troubleshooting] PermaFried:
Why are you using 1900? Only use 850.
[Galaxy S I9000 Q&A, Help & Troubleshooting] dmulligan:
I have an asian i9000 which supports 900MHz and 1900MHz but not wcdma 850. I have locked my phone to 1900 and I still lose signal. No comas for me as I've upgraded to froyo but I still have my phone completely lose signal until I turn flight mode on and off.

:(
[Galaxy S I9000 Q&A, Help & Troubleshooting] bansheezzzz:
Hi all,

Add me to the comatose club. I've had the phone since September with Bell and it only started acting up on me 6 days ago. Until 6 days ago, the phone was pretty stock other than the 2 games I installed from Samsung Apps and the older version of ADW.Launcher. I do, however remember what was done to the phone that day so I'm going to share my experience in the hopes that we can perhaps narrow the problem down some more.

6 days ago:

- upgraded to official Eclair JH2 from JG9

- rooted and installed ext2 lagfix with RyanZA OCLF 2.2.4

- installed newest version of ADW.Launcher 1.2.0 (with catalog navigation)

After this, I noticed that phone loses signal more often than before where it never lost any connection (this combination of data and voice) and no, I haven't been to any new places. And of course the comatose problem at least once a day to as much as 3 times.

Yesterday, after being finally annoyed with the problem, I decided to do a bit of troubleshooting. So first thing I did was I removed the lagfix while keeping root. Unfortunately, this morning I found my phone dead again while being plugged in. So I decided to remove ADW.Launcher. My phone has not "comatosed" for the entire day. It might be too early to tell though. I still lost signal every once in a while though.

I didn't do the WCDMA 850 lock, but I'll give that a try if I don't make it another day. Also, I'm curious if "adb shell" works when the phone is in that state. Might be worthwhile to do a logcat to what happening. If the problem persists I might give that a try too.

I'll post again if I find anything else.
[Galaxy S I9000 Q&A, Help & Troubleshooting] skuzy:
not sure if im in the same boat... but my 2wk old phone would lock up just not to the extent that the phone shuts off.. just 'locks up'.. ie not respondent to home buttons, back, volume etc... had to turn it off and on again...

stock phone. optus, jg4, 2.1, no 3BR.. not sure if anyone else is experiencing this?
[Galaxy S I9000 Q&A, Help & Troubleshooting] emdoe:
What a coincidence. The problem started on me about six days ago too..... I suspect now that bell service quality has been changed??
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
AllGamer, did this lead anywhere? Just found it in google:

http://xdaforums.com/showthread.php?t=785926
[Galaxy S I9000 Q&A, Help & Troubleshooting] lars_stecken:
My final note on this. Since upgrading to Froyo the problem has stopped completely. Quite sad though that no one at Samsung was able to at least acknowledge the problem - they must have been aware since so many had the same issues.

Cheers from Berlin
[Galaxy S I9000 Q&A, Help & Troubleshooting] bestbeancounter:
Now that Telus is coming out with the Fascinate, I'm really interested to see if it will experience the same problems since it'll be running 2.1 out of the box.

Still waiting until there's a 100% certain fix before I jump back into an SGS.
[Galaxy S I9000 Q&A, Help & Troubleshooting] konateh:
I had this exact same problem too, I started using less apps at a time and having less apps installed at one time, plus i deleted lagfix, unrooted and started using twlauncher instead of launcherpro, and I dont have the problem anymore..
[Galaxy S I9000 Q&A, Help & Troubleshooting] emdoe:
OK. Here is an update. There hasn't been any freeze or coma last 24hrs since 850mhz band lock. Haven't experienced any down side of it yet. So far I am happy with this solution for coma problem. Thanks everyone.
[Galaxy S I9000 Q&A, Help & Troubleshooting] louie604:
That's great to here. I too, am coma free after restricting it only to the 850 band.

I have made a call today on the 850 band and I did notice the quality was a bit lower (didn't sound as clear and a little bit of breaking up) but other than that, didn't notice any major difference in call quality. In other words, it's nothing that I would complain about (My cordless home phones are worst than it ;)).
[Galaxy S I9000 Q&A, Help & Troubleshooting] Stiffler's Mom:
Bought my Vibrant about 3 wks ago. On Bell, in Vancouver BC. OS is v2.1.

First handset coma'd for first time after about a week or two. Went to use it, and screen was black. Phone seemed as dead as Polly the Parrot from Monty Python. Minimal apps had been installed. Returned for new handset.

Second handset coma'd on 2nd day. Then I looked for and found this thread. First, thanks for the tips. I first discovered that I don't have to yank the battery out to kickstart the phone back to life.

- 850 lock appeared to work for about a day, but coma returned next day, three times.

- APN OnOff widget was downloaded and set to OFF today. Stay tuned.
[Galaxy S I9000 Q&A, Help & Troubleshooting] bansheezzzz:
So far so good for me here. Comatose issue seems to have gone. I didn't do the 850 band lock but just reverted the phone back to using TwLauncher instead of other launchers.
[Galaxy S I9000 Q&A, Help & Troubleshooting] jezzicuh:
I just wanted to say thanks for this thread and for the 850 locking idea. I switched from iPhone to a Galaxy S (Bell) two weeks ago, and the comas started within a week. I figured it was something to do with the signal -- it was always dying in elevators, around weak wifi, and other tricky reception places. (I'm in Vancouver, if that helps any.)

I've just gone through the 850 fix, and if this works you will have made me a very happy new Android user!
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
Just so I am sure we are all on the same topic still:

I turned on 3G again yesterday and it was dead within 3 hours. However, this is still happening in full bar HSDPA areas with a fallback to full bar EDGE network. Signal strength is for me still entirely unrelated.
[Galaxy S I9000 Q&A, Help & Troubleshooting] cyberwolfmd:
Funny thing is if I keep my galaxy S out on my desk it never shuts off, and if I put in my mickey pocket it will eventually go into a coma.
[Galaxy S I9000 Q&A, Help & Troubleshooting] raffaelediana:
Hello...

i'm experiencing the problem since a week now...

As i understood 2 are the best hypotetical solutions:

1) Lock at 850 Mhz

2) Use nobars application

For the moment i'm trying the NOBARS application.

I'll let you know.

Ciao,

Raffaele.
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
I saw on I think Lifehacker an application called Android System Info and installed it as it gave live access to log files. I then set my phone to 3G only, basically a demand to lock up or reboot to the phone.

And it has done.

I had it in my hand as I got in from work and saw the signal go from full bars to no signal and quickly opened the program, switched to Log View then to Radio log and the last thing I saw before it rebooted in my hand (and went into a reboot loop) was a particular error message. Sadly the log is emptied on reboot it would seem. I am going to try to catch it again and very quickly save the logfile to post here, but perhaps someone else with mor insight can install the application too and have a snoop. There are a LOT of error messages in there, unknown requests, failed tasks and such. I know in unix machines this might mean nothing at all depending on the setup but who knows.
[Galaxy S I9000 Q&A, Help & Troubleshooting] raffaelediana:
So...

First response:

The "nobars" application didn't solve me the problem.

Now i set WCDMA to 2100 LOCKED (It is the unique frequency i receive here in Italy for HSDPA) and i let you know in the next days !!!

Ciao.
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
And it happened again. Same message but as I went to write out the log the phone reset. Since I was rushing I totally forgot what it was too.

The phone is unusually hot just before the reboots, where the SIM card is. I do not know the location of the CPU or Modem inside so I could not say what specifically is hot, but it is not the battery.
[Galaxy S I9000 Q&A, Help & Troubleshooting] louie604:
Sounds like there's something wrong with you phone to me... You should probably get it serviced. My phone was never hot when it locks up. Only time when it gets warm is when I play games, use wifi, or charge the phone... and will get warmer when I'm charging and playing games at the same time.
[Galaxy S I9000 Q&A, Help & Troubleshooting] ek-spoz'd:
On Bell SGS in Calgary. 850 lock hasn't failed on me yet in two weeks :-)

Got my phone from the kiosk at Mallzac, took it back two nights ago for an exchange. Said it was cuz the phone kept shutting off but it was actually cuz I had a scratch on the glass ;-)

I encourage others to exchange your phone too if you're still within 60 days...even if the 850 lock is working for you. Sure a pain in the a$5, but let's send a message to Bell and Samsung that this is still a problem that NEEDS to be fixed!!! Customer service sucks, so send a msg that costs both companies some $. You get a new phone from the deal :P
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
Been a thought, would prefer not to. However keep in mind I am watching this thing like a hawk and have caught it seconds before it went into a reboot loop with the log open. So I am talking about heat at that specific moment - not continual heat. Many people notice it has locked up after the fact, or has gone into a reboot loop when they realise they heard it reboot 3 times in a row for no reason.

I was just stating that there was something odd in the log file when the modem crashed out, and seconds after it was in trouble. The heat dies off pretty fast.
[Galaxy S I9000 Q&A, Help & Troubleshooting] raffaelediana:
Bad news...

my 2100 MHz locked frequency didn't work!

My last hope perhaps will be froyo arriving in Italy in few weeks....
[Galaxy S I9000 Q&A, Help & Troubleshooting] marty1976:
count me in

International Galaxy S i9000, south-west Germany here.

Running JM1, no lag-fix, rooted.

Can't remember where or when it started but it doesn't happen where I live (rural area, only EDGE) and neither where I work (even more rural, only EDGE, too).

It happens when I visit a large mall with HSPA coverage though.

Based upon my observations, my theory is that an incorrect handover causes the radio to lose network connectivity. The half-dead radio then keeps scanning for networks until the battery is drained.

During this, the phone becomes a little warm (I'd not say 'hot') on the upper left backside (when looking at the front).
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
Well I have been saying for ages that mine (i9000 also in Germany - though SGS from UK/Portugal) only has issues on 3G, EDGE is 100% stable.

However a lot of the issues happen to me on 3G while in one location with very strong signal. I am not discounting handover but it seems like handover would not be happening while it sits on my desk at maximum signal strength. You like I can set GSM only to keep Internet on with stability.
[Galaxy S I9000 Q&A, Help & Troubleshooting] yiannisthegreek:
This happened to me yesterday. The phone was running fine and then the next time I looked at it 9approx. an hour later) it was SHUT DOWN and non responsive. I had to pull the battery to get it to turn back on... :(

This is the first time in the 2 months ive owned the SGS that this has happened and I hope it does not continue!!!
[Galaxy S I9000 Q&A, Help & Troubleshooting] nailerr:
Ok I think I got it this time, no thanks to my POS SonyEricsson C702 crashing before I could get a photo.

The error in the Radio log AFTER the "no signal" logo showed up and seconds before the reboot was I think the following:

Couldn't find 'rild' socket; retrying after timeout.

I say think because I was trying to take a sodding photo of the screen, since the write to SD did not work last time.

Does this mean anything to anyone?

---EDIT

A friend has found the following in relation

http://www.kandroid.org/android_pdk/telephony.html
[Galaxy S I9000 Q&A, Help & Troubleshooting] bestbeancounter:
wish I knew what that means..

On another note.. my life with the BB Torch has been short lived. My good friend at Bell just bought a Torch as well and no longer needs his SGS.. so after having him run a stress test with the 850 band for a couple of days and not having any issues (he had the same issues I did when I got my SGS, and for the past 2 days he's been trying to duplicate his old problems with no success), I decided to jump back to SGS.

Going to keep the Torch till Christmas though just in case it does act up and then I'll just sell the SGS.

Here's hoping to no more coma issues.