GS2-G regularly drops cellular network entirely AT&T - Galaxy S II I9100G Android Development

I've done some searching on this, but so far nobody's problem seems to match up with mine. Any help would be much appreciated!
I bought my wife and I both international Galaxy phones to use on AT&T's network. I have a Galaxy Note, and my wife has a GS2-G. My phone is super stable, but my wife's phone will regularly drop all cellular connectivity with no warning. About once a day or so, it just drops everything. Wifi will still connect, but the phone can't text, make calls, or get data. The signal bars are replaced with a circle with a slash through it. This doesn't happen when we're moving from cell to cell. It often happens while she's at work (in the same building all day), and this weekend it happened twice at home. We have great reception at our house, too.
Her phone is setup using the APN settings for a "medianet" phone, found here: http://forum.xda-developers.com/showthread.php?t=1196118.
Otherwise, it's running stock 2.3.6 baseband XXKL4.

i am experiencing similar problems.losing signal totally without any hint.
not once a day but sometimes it happens to me also.
Sent from my GT-I9100G using XDA

i too have this problem. i too sit in the office the whole day. same spot. and this happens frequent enough to piss me off. i raised this issue several times in other discussions, and they keep saying its probably network issue or a faulty phone.
1. i use this same network on my previous phone (iphone), and its fine
2. i cant just send it for warranty cause they will keep the phone for a week or 2 to troubleshoot. so i dont want to be without the phone for that period of time without knowing for sure its a faulty phone.
since i see quite a few people going through and thanks to projectrally, i hope we can all narrow this problem down to what may be the cause, and take necessary action.
---------- Post added at 03:07 PM ---------- Previous post was at 03:05 PM ----------
i have tried flashing diff roms, modems, kernels. i have disabled fast dormancy, and problem still persist.

Got this problem yesterday for the first time , I had to reboot.
When the problem occured, i tried to find network but the phone kept searching...

...
Same problem here! I think all we can do is wait for the ics update.
That should fix it...
P.S: It usually happens when im running low on battery...

im still not sure if its a software or hardware issue

yup i have the same prob to sometimes..after rebooting the phone it works jst fine.. but its quite annoying rebooting the phone when it happens
but it doesn't happen so often as u all described.. mayb once or most twice happens to me in a day ...

Maybe its a hardware problem, LG Optimus 3D has also this problem of "ghost calls" and have the same hardware (TI OMAP 4430)

After ICS update i am facing the same problem. Before i read this thread, i thought it is a software bug but now it seems to be a hardware problem.

Related

Cant text or make calls even with signal bars.........

yup, i need to reboot in order to be able to do so. its weird, at first it happened once in a while, now it happens a lot. does anyone have this issue?
This actually happend to me a couple moments ago but I have no idea how/why it happened.
This happened to me yesterday multiple times. I even formatted the phone twice just to make sure none off the apps are causing the problem. Today the phone is working as it should be.weird...
Mutantblack
I have had this before...
however my biggest baffle is how i have 4 bars of 3g yet my freaking internet/data doesnt work sometimes... the up and down arrows just stare back at me blank as a sheet of paper
is this a defect with the phone, i got mines in the first week it was released, so i am sure it was one of the first batch, we all know the first batches are iffy. i find myself doing it everyday mostly, i emailed HTC and they said to do a full reset on the phone, and if that does not work, to send it in for warranty, but if its not covered under warranty i need to pay. this sucks, it shouldnt give me this much problems.
Happens to me from time to time (once every week or two). I simply enable airplane mode, wait a moment and then disable it. Suddenly my phone is acting as it should.
I simply blame AT&T which makes me feel better

how to fix turning off issue for samsung i9000 ?

I just have updated my mobile from 2.2.1 to 2.3.4, i used this forum tutorial - http://forum.xda-developers.com/showthread.php?t=1139050
I have issue - my phone is turning off for no reason, you know i don't have lots of apps only fb,twitter,skype and 'advanced task killer'
actually when I am doing Skype video calls, writing SMS or anything else my phone just changed to 'black screen' every couple hours and afterwards my Samsung turning off with sound. To turn on I need take battery off and then into back then he allow to turn on...
before I updated I had little bit similar situation, my phone had 2.2.1 version and i didn't have black screen, but my phone just had 'freezing' for 10 sec or more...
what's problem for? what's your suggestions ? thank you a lot.
Ed
I have this issue as well, although it doesn't happen as much since I upgraded to gingerbread. I did have it happen once the other day. I was listening to music and I needed to make a call and when exiting the music app, it froze. It then went black and I had to take battery out and put it back in. It's annoying if you got a otterbox case on it with two layers. I had heard updating to gingerbread stops this but so far I don't think it's 100%. I use my phone as my alarm and one time it went dead with a full charge and I was almost late for work.
Let me know if you figure something out.
what can say experts about our issue ?
I will take some day my mobile to repair centre.. it's sad if couple of people have same issue and nobody can tell us the problem reason.
Try to flash a custom kernel and see if it the problem is still there
can you tell me or give information what's is 'flash custom kernel' ?
I have also encountered this problem, very frequently if i may add.
the problem actually first occured a few months ago, after i updated my firmware to gingerbread.
In my case the phone does not freeze, the screen wont turn on or respond to any gestures (hardware/capacitive button won't too), however any running process still runs, in specific i can still recieve phone calls, or at least hear the ringer.
I know of many other people that encountered this problem, all came from different ROMs (MIUI, SH 3.5 and up, Stock, PilotX etc..) and i, for one, can say that in the past two-three weeks it atarted appearing a few times a day.
So - does anyone have any ideas for the nature of this BUG??
BTW I use the i9000t which i own for over 7 months now.
Same problem
Hi, I have the same problem here.
and have seen this myself on stock roms too.
It doesn't happen very often (only once on my phone for now) but it is getting me pissed off as no one knows the nature of this BUG.
could it be a problem with the latest 2.3.4 version ? or an update of one of the applications?
I don't have too many apps on my phone only skype and 2-3 games.
the only thing I can think of right now is that all people who had this bug had skype on the phone but I don't really think it's from that.
Hi, And-roid if u ll update to 2.3.4 your mobile will working deffo better, i suggest you update your mobile to 2.3.4
Hey eddys, i have 2.3.4 for over two months now, and the problem just go worst...
Hi eddys,
I have the 2.3.4 (and my brother and sister in law have it too with a stock rom).
this is happening on all roms and all kernels...maybe a problem with the 2.3.4?
I don't know but it is very weird, no one has an answer for this....
edit:
just checked this with my phone supplier and of course they have no idea what so ever about this bug.
come to think of it they didn't even know how to fix my brother in laws "problem" when the 3G internet didn't work (settings-->wireless and network-->mobile network--> check the V on Use packet data ) so no surprise there.
Anyone???
Maybe theres another forum that this problem should be posted at??
I have this bug too, but only while tethering. I've found a solution to the tethering related crashes - after you start tethering, go to the SuperUser settings, and disable root permissions for android wifi tether. Your phone shouldn't crash anymore.
hey zyczu,
unfortunately, I do not use tethering at all, do you suggest i should disable ALL root permissions?
This bug is really getting on my nerves!!!
Everything else, but this, is working great...
Since upgrading my i9000m to 2.3.3 through Kies, my phone has exhibited similar symptoms 3 times: freezing, not responding to touch etc.
The first time I had pulled the battery when it did this, but the 2nd time I had just put the phone down a minute or 2 earlier so display was off so didn't notice it(about 2 weeks ago). And the 3rd time(today), I was using it at the time, and so started taking off my rubberized case, only to have it restart before I got the chance to pull the phone back off.
Startup took much much longer than normal, which I recall the startup was similar during the 2nd "freeze & reboot". For some reason today, I randomly though maybe its an OTA update so I checked "Settings..About Phone" and found my kernel version listed as:
Code:
2.6.35.7-I9000UGKG3
[email protected]#2
I have no idea what it was before, but September 8th was 2 days ago... It is possible it said that before today's restart but no idea. I have a PIN on my SIM so when starting up have to enter PIN for it to work, but on these auto restarts I never got asked for my PIN so it could have restarted other times too without me noticing(ie. middle of night).
Hmm, mine used to something similar when I would leave Bluetooth on but would move out of range of a paired device. After a few minutes it would just shut down or stop responding. Haven't had that issue since moving to Milkys rom.
hi guys, i just used this tutorial http://androidadvices.com/how-to-up...0-to-stable-gingerbread-xwjvh-2-3-3-firmware/
first I installed 2.3.3 XWJVB then 2.3.3 XWJVH
just doing step by step...
my phone was working fine 2days then i had same issue and then I changed to original SAMSUNG battery and it's working perfect.
try this..
p.s. what kind of batteries you have 'original' or 'non-original' ? thank you
madmigs:
I did not notice the kernel version ive had before, however i took my phone to a service center today, and for what i can see i have the same version as you do, take aside the i9000t instead of i9000m...
eddys:
Ive been using different batteries orig/non-orig on and off, although since ive noticed it hurts performance i stopped doing that, do you suggest that this might be the cause of the problem?
If so, the factory wipe i just did (formatted the internal SD card) should do the trick.
try reading this it helped me since i turn the wi fi off when i go out
http://androidforums.com/samsung-galaxy-ace/312084-randomly-turning-off.html
Are you guys experiencing turn-off issue while phone is in the locked state. I mean you locked the screen and then after a while when you picked it up for unlocking it was powered off. If anyone has this issue, then I found a solution. Just let me know
my turning off issue went back and it's getting every time more annoying, I don't know what to do...

Restarting in random moments. New rom needed?

Hello,
I am here because i have another problem with my lovely phone :/
You guys always helped me so i hope you will do it again.
Okay,
My phone is restarting in random moments. Screen is freeze for 1-2 seconds and then rebot. It is doesn't matter if phone is used hard (games) or if it's on the table.
1st time it happend with ROM 5.1.2. Then i've decided to go back to 4.1 rom and then automatic upgrade to 4.3.
Few days was okay and after then it starded again.
Does someone know why i have that issue??
I really hope that is only rom problem and if i change it the problem will gone.
And here's second part of thread.
What oryginal rom do you recomend? I have saw a lot of them but i have no idea what could i install.
Right now i have stock rom, i do not remember exactly number but i has "James Bond" music so i am sure it was one rom from that edition...
Edit:
If you find any better rom than stock 4.3 that is really stable i can take it as well
I jsut want my phone wokrks without any problems
Please, halp :fingers-crossed:
Try to run phone in a safe mode and see if the problem with restarting still exists.
I would suggest you to use this CM 12.1 rom it is working just great.
It could be a problem because i have no idea whenit will happen.
Now few days was great only today morning i saw that it restarted.
Hmm, for the first time restarts like this started with that rom... but i will give it another chance i think.
Then maybe an app are causing that random restarts or it may be a hardware problem. It even may be that sim card causing restarts, I have read something about it.
Btw I'm using that rom from the very first builds and I havent have any problems with phone restarts.
I had few restarts when sim card was loose but i have information that phone is restarting.
About app it's not the problem because even if i had no apps downloaded i had that problem
I hope i haven't destroyed my phone when i installed some roms. That would be bad.
For now i will try to instal CM 12 and i hope the problem will go away.
Edit.
And may it be just a battery problem?
Btw. I just did factory reset and already got few restarts, so i am sure it's not an app that causing the restart.
Okay i have watched that phone for a while and found new, fresh informations...
Even in a safemode phone cause to restart. It is no matter if i have a sim/sd card.
I also think it is getting hotter every restart but i am not sure about this.
When i was traveling by train it was restarting like a stupid... The phone was loosing signal and was changing to roaming etc.
I don't know if it has something with that...
After changing to android 5 few days was good and then...
Also that problem started in 1 day. Just started restarting, without any sympthoms.
Oh and 1 what is strange... After the restart when i touch the square (to cloose the apps) there are apps that i have been using before that restart.
Please, help :c
Edit. A hour ago the phone was restarting over and over, it turned on and sudently after homescreen loaded it restarted again. And that was for some time, now it is working without any issues for over 1 hour...
Edit. 2
After the night, and many restarts as well i saw that battery dropped. From 90% to 20%.
May it be just a battery problem and changing it will solve that?
I have the exact problem for 3 weeks now, the phone becomes screen off then randomly reboot and gets very hot.After reboot battery goes down like from 49% to 10%. My phone is just 2.5 years old and everything ia stock. In battery test it shows like battery health is normal. I also only use gsm+umts, mostly umts, Is there any solution for this?
---------- Post added at 05:57 AM ---------- Previous post was at 05:54 AM ----------
This first started when i travelled by train, then it happened like crazy when i am on sub way, now even happens when i am at home
Sucha a big forum and noone knows the answer, daamn :c
I am really thinking about changing battery right now.

WiFi and Blueothoot nor working

Hello giuys
Here I am again, getting every day more and more dissapointed in this phone
Two weeks ago (or when the update was released) I updated to 32.2.A.0.224 hoping to get a better batterylife because previous build was giving me 2h SoT and a lot of bugs like random reboots and overheat all the time
I downloaded an algerian version from XPerifirm (one of the first to was released) and everything was fine (actually there was no much improvement of wich I was looking for, but it was a little better) but one day I can't connect to home wifi, cheking some things neither bluethoot, I had to reboot several times to make it work. Last weekend I downloaded another version from xperifirm (an SA version) and flashed again w/o problem, but the issue persist (started today), actually is worst because today I can't connect at all nor wifi or bluethoot .... I tried Hotspot but can't turn it on too... The screenshots below shows what happens when try to turn on wifi, bt and hotspot
Any ideas how to fix this? I was thinking on simply root and get a custom rom, but almost every custom rom is rooted and there are some games I play a lot and can't be played with root (and root cloack and every tool doesn't work), so is not an option, I'm so frustrated with this phone, hope one of u guys can help me
thanks in advance
I guess you got the wrong modem on that rom, may be you wasn't supposed to flash it.
So, you are frustated with this phone because you flashed a version that was not supposed to be installed on your phone? You mixed up your phone, not the phone itself. You are complaining about SOT and overheating without mentioning how you use your phone. Well, i guess, if you can flass another version rom in your phone, i think you have done more than this..!
Anyway, i hope someone expert can help you. But you have to admit that maybe it is your fault and not accuse the phone
It just was an expression, but as a note, the phone is unusable since the beginning, every update mess one more thing, is the crapiest phone I ever had xD, two months later I bought a real flagship phone, but need this phone working for a not advanced user (that doesn't know or have the time to flash and install all apps over and over again), and every rom installed brings problems that make the phone useless as your post[\s], sometimes battery of 5h in standby, sometimes overheat all the time, sometimes random reboots...
Also genius, actually this phone came with the first customization I flashed, but if u didn't know, all customizations are the same, just came with some apps and market restrictions (plus carrier apps/ settings in carrier specifics) so there's no "version that was not supposed to be installed in your phone" (u can even flash between variants in the same model as long as is a single-sim variant), go home and learn something before u comment so useless things, I understand why there are so low population lately in xda, remember when ppl actually came to help QQ
Anyways, this issue was there since before in some devices (Z3+ obviously) in old updates, I was trying to get some info with that ppl to see if there's a way to solve it, but due limitations at not rooted phones I think there's no way...
Another thing, in the second last update, there's a thread about some issues bootloader/security-related if u updated via OTA, there's a problem if I try to flash am older version after that OTA was installed? because I think the phone was a little more stable before that
Sent from my SM-G935F using XDA-Developers mobile app
Hi, I recently bought this phone and found out the cell reception has some issue and due to that phone keeps on searching network and draining my battery.
I didn't start cursing sony or this phone because I knew there is some issue with the radio and it needs to be replaced and I went to service center and they told me that motherboard needs to be changed.
It's been 1 week still I am waiting but with the new motherboard I think things will be fine.
So why don't you visit sony service center and try to fix things instead of blaming them.
mohitgalaxy3 said:
Hi, I recently bought this phone and found out the cell reception has some issue and due to that phone keeps on searching network and draining my battery.
I didn't start cursing sony or this phone because I knew there is some issue with the radio and it needs to be replaced and I went to service center and they told me that motherboard needs to be changed.
It's been 1 week still I am waiting but with the new motherboard I think things will be fine.
So why don't you visit sony service center and try to fix things instead of blaming them.
Click to expand...
Click to collapse
Don't misunderstand me, I love Sony phones and used it since W300-SE years, this phone have issues, sad is, service center actually doesn't give service if u don't buy the phone with the carrier they are (it seems the carrier pay to have service of almost all brands), and they sell phones (specially flagships) overpriced (like 150usd more) so I don't buy with them, neither use that carrier, so is a little hard
Sent from my SM-G935F using XDA-Developers mobile app

Nexus 6 WiFi stuck at turning on

So i've had this issue for a while now. It started off inconspicuously where my phone would hang and reboot everytime it wasn't plugged in to the charger and the wifi was turned on with charge less than 60%. This caused a ton of bootloops so I figured it was a battery issue and i've ordered a new battery. Also, i stopped receiving OTAs from google so i had to manually flash factory images to update my nexus. Now, i had this problem where the wifi would get stuck at turning on but after a few reboots it'd work. However since flashing the N8I11B update (i realized later that i should have been a little more thorough with my research as this was for Verizon users only) my wifi just wouldn't turn on. It's stuck at turning on and refuses to switch on at all. I flashed the MOB31T version of 6.0.1 and still no luck. I did notice duing setup that the MAC was set to 02:00:00:00:00:00. I tried resetting the network settings but no luck there as well. I'm getting my battery changed soon but i know that has nothing to do with it. I hope its a software issue and not a hardware one because that would mean changing the motherboard and i might as well just buy a new phone with that money. Oh, also data services work fine its only the wifi that isn't working. Also keep in mind that i know nothing about linux shell scripting but i'm willing to do whatever it takes to fix this issue myself.
danny2452 said:
So i've had this issue for a while now. It started off inconspicuously where my phone would hang and reboot everytime it wasn't plugged in to the charger and the wifi was turned on with charge less than 60%. This caused a ton of bootloops so I figured it was a battery issue and i've ordered a new battery. Also, i stopped receiving OTAs from google so i had to manually flash factory images to update my nexus. Now, i had this problem where the wifi would get stuck at turning on but after a few reboots it'd work. However since flashing the N8I11B update (i realized later that i should have been a little more thorough with my research as this was for Verizon users only) my wifi just wouldn't turn on. It's stuck at turning on and refuses to switch on at all. I flashed the MOB31T version of 6.0.1 and still no luck. I did notice duing setup that the MAC was set to 02:00:00:00:00:00. I tried resetting the network settings but no luck there as well. I'm getting my battery changed soon but i know that has nothing to do with it. I hope its a software issue and not a hardware one because that would mean changing the motherboard and i might as well just buy a new phone with that money. Oh, also data services work fine its only the wifi that isn't working. Also keep in mind that i know nothing about linux shell scripting but i'm willing to do whatever it takes to fix this issue myself.
Click to expand...
Click to collapse
I have the same issue with my nexus 5. Take a look at ur Bluetooth that might not b working also.
---------- Post added at 04:59 PM ---------- Previous post was at 04:58 PM ----------
greeneyez15o said:
I have the same issue with my nexus 5. Take a look at ur Bluetooth that might not b working also.
Click to expand...
Click to collapse
What ROM were u using when this occurred ?
greeneyez15o said:
I have the same issue with my nexus 5. Take a look at ur Bluetooth that might not b working also.
---------- Post added at 04:59 PM ---------- Previous post was at 04:58 PM ----------
What ROM were u using when this occurred ?
Click to expand...
Click to collapse
My bluetooth works. Only wifi is giving problems. No, only stock android on my phone
This happened with my phone. It's an issue with a batch of the Nexus motherboards I believe. Some batch of motherboards made by Motorola have an issue where the wifi chip begins to die after 2-3 years.
If your issue is what I think it is: The only solution is getting a replacement motherboard.
Otherwise, you can try opening the Nexus and reflowing the wifi chip. It worked for a couple of days in my case, but only temporarily. Ended up having to get my mobo replaced.
blackroseblade said:
This happened with my phone. It's an issue with a batch of the Nexus motherboards I believe. Some batch of motherboards made by Motorola have an issue where the wifi chip begins to die after 2-3 years.
If your issue is what I think it is: The only solution is getting a replacement motherboard.
Otherwise, you can try opening the Nexus and reflowing the wifi chip. It worked for a couple of days in my case, but only temporarily. Ended up having to get my mobo replaced.
Click to expand...
Click to collapse
My nexus is a little over 2 years old now. I'd rather buy a new phone. This one needs a lot of fixing....
Thanks for your input
OMG ! ! ! Oreo brought my WiFi back to life !!!!
And its gone again lol
greeneyez15o said:
And its gone again lol
Click to expand...
Click to collapse
Boot to safe mode and see if it comes back.
ktmom said:
Boot to safe mode and see if it comes back.
Click to expand...
Click to collapse
Tried it and nada

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