SGS2 loses network / wifi and problems with data - Galaxy S II Q&A, Help & Troubleshooting

I have huge problems with my SGS2 , after update ( I think so ) to official android 4.0.3 (I9100XXLPS) it constantly loses 3G network when not using SGS2 or browsing internet on it.
But it never loses network when talking with with someone , it keeps voice and data connection correctly.
It also loses both wifi / 3G network at same time when I am connected to net via wifi.
But thats not all...
Also happens pretty often that SGS2 sends some data but never receives response from network and for example net communicators like ICQ loses connection when it occur.
Tonight it lost 3G network which I picked manually earlier and displayed error that selected network is unavailable , SGS2 started looking for all networks and it found none displaying that there was error when searching for networks ( that error honestly happens very often even when SGS2 is connected to some network )
I tried of course wipe , even flashing firmware via odin but its always the same.
For now I flashed modem KI4 to see if it changes anything , but looking forward for any tips.

Try flashing a different kernel to help with your wifi problems like Siyah / Neak / Redpill and different modems to see if that helps with your signal / data

unfortunately ...
changing modem / kernel didn't helped ...
its still loosing network and don't wanna connect again until I reboot it.
Even exchanged sim card to new but no luck.
So should I give it to Samsung so they hopefully fix it ?

Sounds like a hardware issue... darn that sucks.
Sent from my GT-I9100

I have same problem in the interruption of Wi-Fi signal and data plan when i open some links in the browser .

bn_ad said:
I have same problem in the interruption of Wi-Fi signal and data plan when i open some links in the browser .
Click to expand...
Click to collapse
earlier I had the same but now have also issues with connecting to any 3G network... it just won't find any until I do reboot
and I seriously have enough of doing wipes :/
Wanted some stable android device , not the one that needs wipes every week, earlier I had Galaxy Gio and were no such problems there.
I even started thinking about Iphone , but sad to loose all those applications that I bought at Android Market .

I used many roms and this rom is the best one check link http://forum.xda-developers.com/showthread.php?t=1436854
Sent from my GT-I9100 using xda premium

bn_ad said:
I used many roms and this rom is the best one check link http://forum.xda-developers.com/showthread.php?t=1436854
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Thanks for posting link , tho after reading issues list in this ROM , I won't even try it.
http://forum.xda-developers.com/showpost.php?p=25647503&postcount=28337
Also on most of those roms ( Cyanogenmod, Miui based roms ) 3G video talk and FM Radio is not working which I am using often.

chmmm I flashed NELP3 modem and is stopped for now loosing 3G network and generally data connection works better too just ...
exactly every 2 hours it closes data connection and connects again, maybe there is somewhere some hidden setting which sets maximum session time ?

You should wipe phone flash original rom and test if it fails return under warranty .
jje

hehe thats what I was about to do , wipe totally all data, from internal sdcard memory too. ( just 1st making backup of all data )
Then flash using odin the newest official firmware for my country.

ehhh after full wipe and flash well , it doesn't seems to drop 3G network , but does drop data connection every few minutes
and it does it even with sim card from different operator
so seems only samsung service for me :/
edit :
nah it drops also 3G network totally.

you are sure guys its not software fault ?
couse I read A LOT of threads on this forum and others , that SGS2 and other Samsung phones have this issue and they saying samsung knows it and working on it ...

Software ICS yes possible .
Test by flashing stock GB rom .
jje

seems its working MUCH better on Android 2.3.5 .
But .... Why my friend who have SGS2 and ICS ( same as me ) also same mobile operator don't have any problems with network ?
Seems will give it to Samsung anyway , as I wanted stable ICS :/

JJEgan said:
You should wipe phone flash original rom and test if it fails return under warranty .
jje
Click to expand...
Click to collapse
+1 on that
no point testing custom roms untill you know hw is proper.

Related

Bell SGS2 3G Data Connectivity Issues

Ok so I've been reading around in a few threads about this but haven't quite found a solution in my case and I think I need a second opinion. I've also posted in other on going threads but it just gets lost in the rabble so.... it now gets it's own thread.
Bought a brand new Bell SGS2 from a dude on Kijiji. It was brand new, still in the box with the plastic all on it. I SIM unlocked it (which required rooting it) and dropped my Rogers SIM chip in.
I can send/receive txt's but 3G data drops frequently and usually happens once I initiate a data session. My test case uses SpeedTest. I've only seen it complete a full test cycle twice... most of the time, it will get the ping, start the download test and 10% in, the data connection drops and 3G/H+ icon disappears. It takes about 1-2 mins for the data connection to return. I've tried market access or web browsing and same thing happens once a data session initiates.
I've installed a slew of modem/ROM combinations via Odin from XXKH3 to XXKI4... nothing... same issue. Seemed worse with KI4 too!
I've tried different APN settings, disabling fast dormancy and specifically trying to enable only HSPA bands. Nothing. Same problem.
I've since reverted back to stock BELL firmware and tried a friends Bell SIM chip and noticed THE SAME thing happening! So this would definitely tell me it's a hardware problem. It's been more than 15 days so Bell won't even talk to me as the return period has passed and I'm not a bell user so screw them.
I guess at this point, I should test my luck with Samsung but it's been rooted and even though I've un-rooted the binary counter shows 2 which means.... I'm screwed for warranty right?
U can reset the binary counter after flashing back to it original state by using jig. Google for galaxy s2 jig
Btw, why dont u just flash original samsung I9100XXKI3 rom? Which provide good modem. Check my signature, 'boot loop', theres a link lead u to installation guide with download link provided. All is there.
Sent from my GT-I9100 using xda premium
I personally found XXKI3 Modem to be best for Bell's SGS2 (currently using it on Telus).
Tried all the modems' including KI3... didn't work.
In recovery mode, fix permission, reboot and check the 3g again.
Try another method, flash cm7 nightly latest version #16. If the problem still exist, thats mean its related to phone's hardware.
Sent from my GT-I9100 using xda premium
neobirdrio said:
In recovery mode, fix permission, reboot and check the 3g again.
Try another method, flash cm7 nightly latest version #16. If the problem still exist, thats mean its related to phone's hardware.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Well I got it new out of the box but I had to SIM unlock it which required rooting and etc....
I did power-volume up-home... got into recovery mode and... there is no option to fix permissions. Keep in mind this is the stock ROM I put back on.
CM7 is another idea.... not against that.
Well. Maybe some failure occured during rooting your phone before. Install rommanager app from the market, open then select flash recovery mode, then select your phone model.. This will give u recovery v4 which will give u more option on recovery mode. This is the easiest way to get more option cwm. U will have fix permission option when u done.
Sent from my GT-I9100 using xda premium
i have the same problem i.e data loses connection. after a fresh flash of stock rom and factory reset , it starts working fine for a week or so and then the shyt happens again . i can tell u , its not a hardware issue, it more like a software issue.
i m not good at android but wen i used to run squid on a linux machine as a proxy server , i recall i had to clear a log file to make data flow possible every few days. i think android has a similar issues some logs files build up or some **** like that.

[Q] wifi not scanning networks

i recently flashed my phone with dozens of firmwares nothing could help me (My wifi cant scan any of the networks). i am currently using XXKE7 and rooted my phone with CF-root v4.0 . i read some posts about wifi conf files needed and i dont know how to do it. can anybody help me with this
Thank you
One wipe phone and flash a stock GB rom and test WIfI PROBLEMS THEN ITS HARDWARE RETURN TO SERVICE .
jje
sammy
thank you for the reply, tried flashing it have given to to sammy's service centre. I will get the phone by today evening , had to sign a dead approval certificate as the phone is not from my country.... hoping this issue is resolved inshallah

[Q] SG3 Data Connection Problem - Please Help

Hi
I have a problem with my Samsung Galaxy SIII (Internationl version) it keeps turning off my data connection by itself for no specific reason, I need my data connection to be on all the time(I have an unlimited data connection plan) and I'm talking about the 3g/H connection not the Wifi connection, please find hereunder my trials to solve the problem:
- I installed Omega ROM V3
- Run "FastDormancy Toggle i9300 by gokhanmoral" to disable the FastDormancy
- Run BetterBatteryStats to check for "secril_fd-interface" after disabling it and I didn't find it
- The Data connection still turns itself off !!
Also when the data is off by itself, I checked "*#0011#" and I found that the RRC state is under IDLE state so I tried to send any messages using "Whatsapp" and other chat apps in order to wake the connection up but unfortunately it didn't worked.
Please note that sometimes the data connection icon indicator in the top of the screen is there but it's not working (with no green/orange arrows, just grey)
If I wanted to wake the connection I have to disable the data connection and enable it again, after that everything is working fine till it disabled itself again.
when my connection is up and running with no problems, I checked "*#0011#" and I found my RRC state switching between "DCH and IDLE" ONLY, does this means anything?
Then I wiped my phone and:
- I tried CyanogenMod 10 ROM
Did all of the above again and it didn't worked
-I tried CodecROM
Did all of the above again and it didn't worked
now I un-rooted my device and installed the stock 4.1.1 ROM and I have the same problem
Please HELP
BTW my network provider does not support the FD as I called them many times and they don't even know what I'm talking about.
My device specs:
Model Number GT-I9300
Android version 4.1.1
BB I9300XXDLID
Try this...
i have not encountered this problem you should try restoring/ formatting your device to stock Samsung FW.
Thanks beastify, but I just did that as I mentioned in my question and I still have the same issue
mohamednabil said:
Thanks beastify, but I just did that as I mentioned in my question and I still have the same issue
Click to expand...
Click to collapse
Maybe try not using Jelly Bean (4.1.1) and you should try a Custom Ice Cream Sandwich (4.0.4) ROM or then the Stock Samsung Rom.
Jelly Bean still has bugs so i am guessing it is the problem.
It could be a problem with your network provider also. Why don't you put sim card from a different carrier and check ?
Sent from my GT-I9300 with a BIG
Beastify, I tried IceCream Sandwich but with no luck also
jaidev.s, this is a good idea but not recommended for me as I'm a customer with my carrier from a very long time ago and I have a VIP treatment, but I can give it a try, thanks for your help

[Q] problems with flashing roms

Hay everyone .
I recently flashed salmanrom v 4.2 and everything went fine until I was unable to use network data my carrier gives me. However, I could still connect to wifi.
I can still send messages and calls but I can't connect to the internet because I'm unable to to use my network data. I tested the the sim on another phone and everything worked perfectly even the network data.
I'm really frustrated someone help me please
Known issue with that ROM?
If not, flash a new modem.
If you are getting your network you should be able to use data tho.
Sent from the little guy
stealthpython said:
Hay everyone .
I recently flashed salmanrom v 4.2 and everything went fine until I was unable to use network data my carrier gives me. However, I could still connect to wifi.
I can still send messages and calls but I can't connect to the internet because I'm unable to to use my network data. I tested the the sim on another phone and everything worked perfectly even the network data.
I'm really frustrated someone help me please
Click to expand...
Click to collapse
Check and make sure your APNs are set properly for your carrier on the phone you do not get mobile data on.
ctomgee said:
Check and make sure your APNs are set properly for your carrier on the phone you do not get mobile data on.
Click to expand...
Click to collapse
Maybe could help a full wipe and re-flash the same rom...
mattefin said:
Maybe could help a full wipe and re-flash the same rom...
Click to expand...
Click to collapse
That is excessive if fixing APNs might solve his problem. Plus, re-flashing the same ROM may not auto populate his APNs anyways.

No retry to searching lost GSM network on P-715

Hello All
I have Lg L7 ii P-715
My problem is :
Our home have weak GSM operator signal . in past I had some models like nokia 1100 and Iphone and etc. that if GSM signal lost , my phone tried search and connect to operator again !
but in P-715 , when network signal lost , phone don't try to find network signal again and on top lcd antenna signal , red sign indicate on antenna signal !
in this situation , I have to restart phone or enable airplane mode then disable this for searching network !
I reflash again my phone with android 4.4.2 and hard reset , but problem not solved
any idea ?
hamed_a said:
Hello All
I have Lg L7 ii P-715
My problem is :
Our home have weak GSM operator signal . in past I had some models like nokia 1100 and Iphone and etc. that if GSM signal lost , my phone tried search and connect to operator again !
but in P-715 , when network signal lost , phone don't try to find network signal again and on top lcd antenna signal , red sign indicate on antenna signal !
in this situation , I have to restart phone or enable airplane mode then disable this for searching network !
I reflash again my phone with android 4.4.2 and hard reset , but problem not solved
any idea ?
Click to expand...
Click to collapse
You probably need to search a better device. I have a similar problem with my P714, and it gets worse every day - it began the way you describe, and after a while, restarting (or using apps that do it, which is basically the same) stopped helping. I'm about to get rid of this device as it doesn't supply the most basic functionality. BTW I replaced 3 ROMs since this problem began without luck.
Digdis said:
You probably need to search a better device. I have a similar problem with my P714, and it gets worse every day - it began the way you describe, and after a while, restarting (or using apps that do it, which is basically the same) stopped helping. I'm about to get rid of this device as it doesn't supply the most basic functionality. BTW I replaced 3 ROMs since this problem began without luck.
Click to expand...
Click to collapse
Did you reflash the radio partition?
neutrondev said:
Did you reflash the radio partition?
Click to expand...
Click to collapse
Didn't try it.
Digdis said:
Didn't try it.
Click to expand...
Click to collapse
It can be rom related but if you don't flash with kdz zip flashes will usually flash just kern and rom. Want me to cook a flashable zip with modem? Tell me if you run kitkat or jellybean.
neutrondev said:
It can be rom related but if you don't flash with kdz zip flashes will usually flash just kern and rom. Want me to cook a flashable zip with modem? Tell me if you run kitkat or jellybean.
Click to expand...
Click to collapse
Can I solve my problem with this ?
If I can solve , please tell me how I can do it ?

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