[Q] S2 issues - Galaxy S II Q&A, Help & Troubleshooting

Hi Guys,
I tried to update my S2 GT-I9100 with custom rom, it didnt got updated but after few days when it restarted, there is no network. I didnt took EFS backup.
Tried restoring mutliple images, backups, but it is still not working.
Sometimes iemi came and network work, but after few seconds, it stopped.
Please help, I dont know much about android .
It was a korean version phone, kixx3.

ranakoti said:
Hi Guys,
I tried to update my S2 GT-I9100 with custom rom, it didnt got updated but after few days when it restarted, there is no network. I didnt took EFS backup.
Tried restoring mutliple images, backups, but it is still not working.
Sometimes iemi came and network work, but after few seconds, it stopped.
Please help, I dont know much about android .
It was a korean version phone, kixx3.
Click to expand...
Click to collapse
Just try by flashing the official rom by odin and see if it works,

S2
Jeetu said:
Just try by flashing the official rom by odin and see if it works,
Click to expand...
Click to collapse
HI jeetu, I have tried flashing with official and many other roms but its not working. IEMI come sometimes and goes out after some seconds.

ranakoti said:
HI jeetu, I have tried flashing with official and many other roms but its not working. IEMI come sometimes and goes out after some seconds.
Click to expand...
Click to collapse
This is a known problem. You have to physically remove the battery for a few seconds to restore the network.

KurianOfBorg said:
This is a known problem. You have to physically remove the battery for a few seconds to restore the network.
Click to expand...
Click to collapse
I have tried switching off the phone for few days, removing the battery but it didnt worked. tried restoring the network but it didnt detect Sim Card.
it detects sometimes, but then after few seconds it is not working...

ranakoti said:
I have tried switching off the phone for few days, removing the battery but it didnt worked. tried restoring the network but it didnt detect Sim Card.
it detects sometimes, but then after few seconds it is not working...
Click to expand...
Click to collapse
Network comes sometimes, but most of the times it didnt show, IEMI says null, sometimes it is there.
tried replacing multiple network sim cards too.
xxki3
gl-I9100
Please help..

Related

Suddenly no signal / reception

Hello guys,
I have a severe problem with my SGS2.
I was using it as always when suddenly my signal strenght dropped down to 1 bar and since then it's changing between 1 bar and "no service".
I have been running on CM10 Nightly 20120910, thus I thought I'd try another modem. Flashed XXLQ6, nothing changed.
Then I flashed the 20120908 nightly - no change
flashed CM9.1 with XXLX/XXLW modem - no change
reflashed CWM Kernel - no change
I tried using another Sim-Card which operates in another network - no change, still only 4% signal strenght (looked up using Network Signal Info)
The I tried using my current Sim-Card in another mobile phone, and there it worked flawlessly.
WLAN is still working, but no GSM/UMTS. Even if I have 2 connection bars for some seconds, I still have no internet connection via UMTS during that time.
Anybody got an idea?
Greetings, Alucard2050
Alucard2050 said:
Hello guys,
I have a severe problem with my SGS2.
I was using it as always when suddenly my signal strenght dropped down to 1 bar and since then it's changing between 1 bar and "no service".
I have been running on CM10 Nightly 20120910, thus I thought I'd try another modem. Flashed XXLQ6, nothing changed.
Then I flashed the 20120908 nightly - no change
flashed CM9.1 with XXLX/XXLW modem - no change
reflashed CWM Kernel - no change
I tried using another Sim-Card which operates in another network - no change, still only 4% signal strenght (looked up using Network Signal Info)
The I tried using my current Sim-Card in another mobile phone, and there it worked flawlessly.
WLAN is still working, but no GSM/UMTS. Even if I have 2 connection bars for some seconds, I still have no internet connection via UMTS during that time.
Anybody got an idea?
Greetings, Alucard2050
Click to expand...
Click to collapse
I'm facing the same issue. Did you solve it?
If it happened suddenly and the problem persists in other phones, than it's your network operator cell.
[size=-2]Sent from my Galaxy S2[/size]
gb.yolo said:
If it happened suddenly and the problem persists in other phones, than it's your network operator cell.
[size=-2]Sent from my Galaxy S2[/size]
Click to expand...
Click to collapse
The problem doesn't persist in other phone. I've tried the SIM in two other phones and it works perfectly.
Also tried another SIM(which works on some other phone) but don't work on mine.
Check my issue here: http://forum.xda-developers.com/showthread.php?t=1882796
Alucard2050 said:
Hello guys,
I have a severe problem with my SGS2.
I was using it as always when suddenly my signal strenght dropped down to 1 bar and since then it's changing between 1 bar and "no service".
I have been running on CM10 Nightly 20120910, thus I thought I'd try another modem. Flashed XXLQ6, nothing changed.
Then I flashed the 20120908 nightly - no change
flashed CM9.1 with XXLX/XXLW modem - no change
reflashed CWM Kernel - no change
I tried using another Sim-Card which operates in another network - no change, still only 4% signal strenght (looked up using Network Signal Info)
The I tried using my current Sim-Card in another mobile phone, and there it worked flawlessly.
WLAN is still working, but no GSM/UMTS. Even if I have 2 connection bars for some seconds, I still have no internet connection via UMTS during that time.
Anybody got an idea?
Greetings, Alucard2050
Click to expand...
Click to collapse
Hi!
Since you are new here, it may be the best time for you to read the forum rules not that you've done something wrong but just to inform you about it
Here's the list of modem that you can flash http://forum.xda-developers.com/showthread.php?t=1131950, it comes along with a guide..
Since everything you mentioned failed, i suggest you flash back to stock firmware and do a factory reset it might just do the job..
i hope this helped you, cheers!
saywhatt said:
Hi!
Since you are new here, it may be the best time for you to read the forum rules not that you've done something wrong but just to inform you about it
Here's the list of modem that you can flash http://forum.xda-developers.com/showthread.php?t=1131950, it comes along with a guide..
Since everything you mentioned failed, i suggest you flash back to stock firmware and do a factory reset it might just do the job..
i hope this helped you, cheers!
Click to expand...
Click to collapse
Thanks for the response. But I've tried flashing the stock firmware with factory reset and what not. I'm still facing the issue. Kindly help me.
here's my issue: http://forum.xda-developers.com/showthread.php?t=1882796
-----
update:
Upon your insistence, I flashed the official stock again, did a factory reset. Still facing the issue. Flashed two different modems again. Still no luck.
Restored by original EFS, no luck. Fixed RW of EFS folder. No luck. Still the same issue.
Please help.
deathfrag said:
The problem doesn't persist in other phone. I've tried the SIM in two other phones and it works perfectly.
Also tried another SIM(which works on some other phone) but don't work on mine.
Check my issue here: http://forum.xda-developers.com/showthread.php?t=1882796
Click to expand...
Click to collapse
Sorry I didn't read
If you've already full wipe'd your phone and then installed a stock firmware and the issue doesn't solve yet, it may be a hardware-related problem, also because you said that another SIM, working on other phones, doesn't work on your S2.
Try another full wipe and install a different firmware, and if still not, I don't know...
deathfrag said:
Thanks for the response. But I've tried flashing the stock firmware with factory reset and what not. I'm still facing the issue. Kindly help me.
here's my issue: http://forum.xda-developers.com/showthread.php?t=1882796
-----
update:
Upon your insistence, I flashed the official stock again, did a factory reset. Still facing the issue. Flashed two different modems again. Still no luck.
Restored by original EFS, no luck. Fixed RW of EFS folder. No luck. Still the same issue.
Please help.
Click to expand...
Click to collapse
Problem still insists, huh? Well... it may be time to pack up and go to the service center..
Sent from my GT-I9100 using xda premium

[SOLVED] Another no SIM detected issue...

Hello
I just ran into the no SIM detected problem many people already had. This happened after having flashed Pount ROM CM 11, after which I tried to restore my stock ROM backup with no success. I also get signal.
I did some lookup, and it seems most of the time the obvious symptom is the loss of the IMEI.
However my IMEI is fine. My baseband is also correct. I tried restoring the whole "efs" folder which I had backed up a few months ago, but still no go.
Which other options do I have? I'd gladly read some other thread but I could not find any other similar situation - maybe because most of the time the IMEI is loss.
Can I get some help? Thanks!
muryoh said:
Hello
I just ran into the no SIM detected problem many people already had. This happened after having flashed Pount ROM CM 11, after which I tried to restore my stock ROM backup with no success. I also get signal.
I did some lookup, and it seems most of the time the obvious symptom is the loss of the IMEI.
However my IMEI is fine. My baseband is also correct. I tried restoring the whole "efs" folder which I had backed up a few months ago, but still no go.
Which other options do I have? I'd gladly read some other thread but I could not find any other similar situation - maybe because most of the time the IMEI is loss.
Can I get some help? Thanks!
Click to expand...
Click to collapse
I'll just answer myself as I kept on investigating and it may help somebody observing the same symptoms: the SIM card was simply dead. Yay, my I9100 is back on track :victory:

"Not Registered on Network" Error. Most "solved" threads tried.

Hey guys!
I'm currently getting the "not registered on network error". I have tried any; if not all threads on this issue to no prevail! It started when i flashed my phone to a deodexed version of the stock firmware for my phone.
What i have tried;
Used my simcard in other phone (Works fine)
*#06# brings up the same IMEI string as the one underneath battery
Using another simcard in my phone doesn't work
Used Kies Emergency Recovery to flash my phone back to complete factory reset
The strange thing is, i then thought after my efforts, i've had a hardware failure. But when i scan for my local networks, i see them just fine. Which would presume the antenna is operational. *see attatchment - Screenshot_2015-01-09-02-30-32.png*
Try patched modem and kernel, restore efs backup.
boomboomer said:
Try patched modem and kernel, restore efs backup.
Click to expand...
Click to collapse
Thanks for the reply.
I think it's on it's way out. The phone is touching 3-4 years old now. One of the first to receive the phone. It seems to be a power issue. I did the above solution yesterday evening which didn't work. However, the phone IS currently working perfectly above 45% battery. Have you ever come accross this issue before?
Is the battery swollen? Try another battery.

P9000 - No radios with official stable nougat

I've installed the official Nougat update from Elephone using the SP flash tool. Before the update, everything on the phone was working.
After the update, the phone boots Android 7 fine, but no SIM cards are recognised.
I've tried entering Engineer Mode through the phone app to reset the IMEI (I know what they are) but the 'Connectivity' page in Engineer Mode doesn't list phone radios, only FM, Bluetooth, NFC and WiFi.
So I rooted the phone and tried entering AT commands through a terminal. But the folder /dev/radios is empty.
It's like my phone has no... well, no phone. I guess the driver is broken somehow.
Does anyone have any tips on how to proceed?
tom.k.cook said:
I've installed the official Nougat update from Elephone using the SP flash tool. Before the update, everything on the phone was working.
After the update, the phone boots Android 7 fine, but no SIM cards are recognised.
I've tried entering Engineer Mode through the phone app to reset the IMEI (I know what they are) but the 'Connectivity' page in Engineer Mode doesn't list phone radios, only FM, Bluetooth, NFC and WiFi.
So I rooted the phone and tried entering AT commands through a terminal. But the folder /dev/radios is empty.
It's like my phone has no... well, no phone. I guess the driver is broken somehow.
Does anyone have any tips on how to proceed?
Click to expand...
Click to collapse
Use maui meta 3g to restore IMEI. It is mentioned several times in these forums.
Hexyl said:
Use maui meta 3g to restore IMEI. It is mentioned several times in these forums.
Click to expand...
Click to collapse
Well, there's one who didn't read the question. This is not about restoring the IMEIs.
Alright. I know flashing nougat might break the radios and also IMEI. This includes not detecting simcards. I had this problem myself.....
I have the same problem, or similar .
I can sometimes send and recieve text messages and sometimes i can call. Data traffic seems to work ok.
Right now as soon as i try to make a call i lose connection to the mobile network.
Theres a simple fix, reflash 6.0, then do format all + download android 7, imei wont be restored, but both sims will be recognized and work normally
Ruben Craveiro said:
Theres a simple fix, reflash 6.0, then do format all + download android 7, imei wont be restored, but both sims will be recognized and work normally
Click to expand...
Click to collapse
I did this and got the sim working with data and SMS but I can't call.
Should I try again? I want to restore my imei from my box too.
Flashtool and stock roms?
How did you do Tom? Did you fix it?
Thenbay said:
I did this and got the sim working with data and SMS but I can't call.
Should I try again? I want to restore my imei from my box too.
Flashtool and stock roms?
How did you do Tom? Did you fix it?
Click to expand...
Click to collapse
are you using the usa model? its known to have issues on latest versions due to incompatibility issues with radio files
Ruben Craveiro said:
are you using the usa model? its known to have issues on latest versions due to incompatibility issues with radio files
Click to expand...
Click to collapse
No, i think i have the European version. The problem remains if I flash back to 6.0.
Thenbay said:
No, i think i have the European version. The problem remains if I flash back to 6.0.
Click to expand...
Click to collapse
then its priblably usa version.. since this has never happend to me
tom.k.cook said:
I've installed the official Nougat update from Elephone using the SP flash tool. Before the update, everything on the phone was working.
After the update, the phone boots Android 7 fine, but no SIM cards are recognised.
I've tried entering Engineer Mode through the phone app to reset the IMEI (I know what they are) but the 'Connectivity' page in Engineer Mode doesn't list phone radios, only FM, Bluetooth, NFC and WiFi.
So I rooted the phone and tried entering AT commands through a terminal. But the folder /dev/radios is empty.
It's like my phone has no... well, no phone. I guess the driver is broken somehow.
Does anyone have any tips on how to proceed?
Click to expand...
Click to collapse
Did you get your phone working again??
I have not been able to geet mine working again.
this phone has soo many problems,, why the hell they sale it like that, mine had no emie once updated to 7.0 and it has never had a speaker working. i'm dealing with warranty and this guys dont want to take responssability for their product. very frustrating !!! any how i got one of the sim cards working the second slot, also got the emie showing now but still no audio from speaker, what i did.... i flashed the android 7.0 i selected format+download and everything works just the speaker does not
DiMatador said:
this phone has soo many problems,, why the hell they sale it like that, mine had no emie once updated to 7.0 and it has never had a speaker working. i'm dealing with warranty and this guys dont want to take responssability for their product. very frustrating !!! any how i got one of the sim cards working the second slot, also got the emie showing now but still no audio from speaker, what i did.... i flashed the android 7.0 i selected format+download and everything works just the speaker does not
Click to expand...
Click to collapse
that seems like a hardware issue, i think theres a few cheap speakers and you could try to fix urself on ali express theres speaker at around 10$ it ahould be farelly easy to replace it
I've had this same problem, but only after replacing my screen due to damage. Ever since then, it'll see the sim but wont connect to my network.

Not registered on network

Good day guys.
I have a problem that I think is very common, however I haven't found a solution yet. I recently update my S6 edge (925I - latam) via odin to Nougat, everything was cool but I can't do or receive both calls or sms. I have cellular signal, however there is not registered with the network carrier.
I already flash modem.bin from older firmwares and do not work. Sometimes I loose cellular connection or stay the same, with signal but not registered. I tried other possible solutions like airplane mode and reboot, flashing roms, connect only via 2G or 3G, nothing have worked. My sim is not corrupted and the imei is just fine, without report or related.
I hope you can help me. Thank you very much.
Did u find a solution
erickbermont said:
Good day guys.
I have a problem that I think is very common, however I haven't found a solution yet. I recently update my S6 edge (925I - latam) via odin to Nougat, everything was cool but I can't do or receive both calls or sms. I have cellular signal, however there is not registered with the network carrier.
I already flash modem.bin from older firmwares and do not work. Sometimes I loose cellular connection or stay the same, with signal but not registered. I tried other possible solutions like airplane mode and reboot, flashing roms, connect only via 2G or 3G, nothing have worked. My sim is not corrupted and the imei is just fine, without report or related.
I hope you can help me. Thank you very much.
Click to expand...
Click to collapse
Did you find a solution because I also have the same problem but I did everything and it failed.. I even factory reset the phone
Matte42 said:
Did you find a solution because I also have the same problem but I did everything and it failed.. I even factory reset the phone
Click to expand...
Click to collapse
Same issue for me.
Tried:
OTA update
Odin update - installing new stock firmware (with different software version)
Factory reset
Installing TWRP + LinageOS beta
Replacing the sim slot in a service
Nothing worked. Anybody?
Look in settings > status
Do you guys have an IMEI?
This happend to me 2-3 times last 30 days... sometimes I have signal but not registred on network, sometimes there's even no signal, etc...
I also tried several things to resolve the problem...flashing modem, reset dialer, changing network mode, enabling airpalne mode, another SIM card, etc... For the 1st time, flashing modem helped... but 2 days ago when this happened again flashing modem did not help...then I tried changing network mode and I got signal again... last night it also lost signal and today I changed network mode to 4g/3g/2g auto and it got signal again, then switched back to 2g and it's fine till now...
Hope this will not repeat....if does, coulb be very annoying thing...
milos_87 said:
This happend to me 2-3 times last 30 days... sometimes I have signal but not registred on network, sometimes there's even no signal, etc...
I also tried several things to resolve the problem...flashing modem, reset dialer, changing network mode, enabling airpalne mode, another SIM card, etc... For the 1st time, flashing modem helped... but 2 days ago when this happened again flashing modem did not help...then I tried changing network mode and I got signal again... last night it also lost signal and today I changed network mode to 4g/3g/2g auto and it got signal again, then switched back to 2g and it's fine till now...
Hope this will not repeat....if does, coulb be very annoying thing...
Click to expand...
Click to collapse
Hey, Please send me a link of the modem.bin file that worked for you... I've tried everything and it does not work
brikauskey said:
Hey, Please send me a link of the modem.bin file that worked for you... I've tried everything and it does not work
Click to expand...
Click to collapse
Bro, download some older firmware from the one you have from sammobile and exctract it...there you'll find modem.bin
At last, I couldn't fix my s6...so I sold it...then the guy who bought it needed to write some chip to motherboard and he got it working again...
Sent from my SM-G930F using Tapatalk
milos_87 said:
Bro, download some older firmware from the one you have from sammobile and exctract it...there you'll find modem.bin
At last, I couldn't fix my s6...so I sold it...then the guy who bought it needed to write some chip to motherboard and he got it working again...
Sent from my SM-G930F using Tapatalk
Click to expand...
Click to collapse
Could you find out exactly what he did for me?
brikauskey said:
Could you find out exactly what he did for me?
Click to expand...
Click to collapse
That was a guy who work in service, I don't have his contact anymore... but that's what he told me...write that chip in motherboard and get new imei number...it was very expensive, almost a half price of the phone...
Sent from my SM-G930F using Tapatalk
I know the topic is old... But I have the same phone and the same network error. Has anyone here managed to solve it?

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