Database Info

[Q] No signal or No service on Samsung Galaxy S

I noticed that my galaxy was sluggish & decided to preform the solution here: hemorrdroids.net, speed up your Samsung galaxy S
now in the process, i got it wrong several times whiles flashing with the odin. when I finally got it right and reinstalled the firmware, the phone displays a no service notification, but show the name of the network chip in it. no signal bars as if it were locked. I bought it as unlocked phone. now I cant even search for a single network in my country. when u do a manual search, it returns nothing. if u try the dialer it says not registered to network..
does anyone know how to get my signal a GPS working?? please!!!!!!!!!!!!!

Hmm... I've got the same problem as you... Flashed docs to my Galaxy S Yesterday and now it show no service notification.... Anyone who have a got an idea?

I am also facing the same problem. Any one who has solved it ?

Got the same problem, from 1 day i have notification (no service)

Got the same problem plz plz some one helpp

Not sure if it's the same problem you folks are having, but there's a thread on here entitled "Problem with Airplane Mode on Epic after installing midNight ROM" that describes a problem with no signal after a ROM flash, and a solution via using Odin to update just the modem.
I would post a link, but the forum here won't let me because I don't have enough posts. Your mileage may vary, but the symptoms sound similar so it might give you a place to start even if the fix doesn't fix you.

I too am having the same problem. It seems that my Phone (Galaxy SC-02b) does not recognize the modem/internal antena.
I installed the Darky's Rom on it, and it runs great. Except the signal part. I can flash it back to the original, but I want to see if I can make it work.
I think it's just a matter of picking out the correct modem tar, but I can't find the right one. My phone is a little bit odd, It's a Japanese Galaxy, so not sure if I can find it here. Unfortunately my Japanese is not good enough to go scouring the japanese forums.
Thanks for any help.

Hey Yefimenko what 3G bands are used in Japan 1900/850 or maybe 900/2100 or 1700/2100 ? Can you find that out ? then you need to flash modem that supports that , Europe support 900/2100 US/Canada/Australia 850/1900 and AWS 1700/2100 Tmobile US /Wind? mobilicity Canada
Hitec

We've been through all of this before the Japanese phones will only work with the Japanese kernel. Symptoms are usually sin not recognized and no radio signal. QUOTE=yefymenko;11612862]I too am having the same problem. It seems that my Phone (Galaxy SC-02b) does not recognize the modem/internal antena.
I installed the Darky's Rom on it, and it runs great. Except the signal part. I can flash it back to the original, but I want to see if I can make it work.
I think it's just a matter of picking out the correct modem tar, but I can't find the right one. My phone is a little bit odd, It's a Japanese Galaxy, so not sure if I can find it here. Unfortunately my Japanese is not good enough to go scouring the japanese forums.
Thanks for any help.[/QUOTE]
Sent from my SC-02B using XDA Premium App

Either the phone.apk is bad or the modem is incompatible.
You could try the http://romkitchen.org/ and make an update with different modem only.

If your Samsung Galaxy S displays no network/no signal, or emergency calls only, try the following things:
1. flash the device again with the modem image (download the firmware of your device from samfirmwares.com, delete everything from the .tar file except modem.bin, and then flash this file to the phone with Odin (you can get Odin and instructions from that site too)
2. maybe your nv_data.bin file or /efs directory got corrupted, make a backup of the folder, then simply delete nv_data.bin, it will be recreated for you on Galaxy S.
For this, you’ll need root. If you have a root-enabled kernel, like the Voodoo lagfix kernel, you only have to install the Superuser app and Busybox on the phone, download the Android SDK to your PC, install platform-tools in the SDK manager, go to the platform-tools directory and start adb shell.
In the shell, type su, wait for the Superuser prompt to appear on the phone (if it does not appear, open the Superuser app and try executing su again), enable root access for the command. Now go to /efs, copy everything to for example /sdcard/efs, then rm nv_data.bin.
Reflashing the device with a kernel and checking “phone EFS clear” in Odin also works (make sure you made a backup of the EFS folder just in case).
3. you can try changing the CSC (to XEO for Europe): enter *#272*imei# on the phone tab. Note: this will reset your phone to factory settings, so make sure you did a clockworkmod backup before this. Incorrect CSC setting may cause MMS not working also.
4. check if you inserted the SIM card correctly
Thanks
MertBaBaaa

first check imei no

hello for all members,
i have solution for this problem "not network or not signal" Samsng Galaxy SC-02B Docomo
later write my solution phone work all World
__________
XcachorroX

galaksy s no signal
3. you can try changing the CSC (to XEO for Europe): enter *#272*imei# on the phone tab. Note: this will reset your phone to factory settings, so make sure you did a clockworkmod backup before this. Incorrect CSC setting may cause MMS not working also.
this solution works for me and thanks alot many many thanks

maybe i've got a solution for the no service probleme. i tried this code *2767*3855# and my phone works normal now
i hope it works for you guys

No Network after change of CSC - is there a recovery strategy?
SOLVED
======
Asked around and it goes like this: 2.1 + market = no signal, (2.2 or 2.3) + market = no problem
Solution is UPGRADE from 2.1. to 2.2 or better - I hope this will help anyone else with the same problem.
If you can't do it yourself, any mobile shop will for a small fee.
Symptoms
========
Changed CSC from KSA to XSG with code *#272*HHMM# for 2.1 (no Market in KSA mode)
Galaxy S GT-I9000 now shows blue circle with diagonal in notification area at top of screen.
Settings > Wireless and network > Mobile networks Network mode > Network operators > Search Networks or Select Automatically produces no response - finds no networks.
Dialpad dial a number => "Not registered on network"
Coincidental hardware failure seems very unlikely but not impossible I suppose.
What I would like to know is if there is a recovery strategy from here?
Even if it includes installing a complete new firmware? (and possibility to revert to original if required for warranty)
Device does not respond to "3-finger salute" (volume-home-power).
I am not confident that a warranty is worth all that much in this part of the world. It may be quicker and more effective to do it myself.
Further details of history and phone info below.
I will be very grateful if anyone can help me out
History
=======
Phone purchased in Saudi Arabia (KSA). Worked fine with pre-paid SIM (mobily) voice, data, sms, wifi.
Phone also worked fine with a pre-paid sim (cosmote whatsup) in Greece - voice, data, sms, wifi.
However, since phone was purchased in KSA, Android Market was not installed. Found a Market.apk and installed that. Installs but doesn't actually work.
Found code for changing CSC (*#272*HHMM# for 2.1, *#272*[IMEI No]# for 2.2) 2 colleagues had success and no problems with this with a Tab and 2 Ss, albeit with 2.2. The code looks worth a try on 2.1 so I gave it a go.
Had to remove the side-loaded Market before the code would run and changed the CSC from KSA to XSG.
Market pops up on the screen and works fine.
BUT no network. Network name shows in the Notifications though. The GR SIM shows "(No Service)"
Factory reset, returning CSC to KSA do not help.
The mobily SIM works fine in other phones but no known good SIM works in this phone.
Mobily tech support (in store visit, usually commpetent guy who knows me) is completely flummoxed and asks me if I have a warranty.
So now I have a very compact WiFi only tablet
Phone Info
==========
Model number: GT-I9000
Firmware version: 2.1-update1
Baseband version: I9000JXJG2
Kernel version: 2.6.29 [email protected] #2
Build number: ECLAIR.JPJG8
Personalisatiob(sic) Status
Network Lock
[OFF]
Network Subset Lock
[OFF]
SP Lock
[OFF]
CP Lock
[OFF]
Settings > Wireless and network > Mobile networks Network mode > GSM/WCDMA (auto mode)

Solution to your problem
Hi All,
This happened to me before and I was as frustrated as you and when I was about to give up, I tried one last restoration, but only this time I did it correctly. After that, I restored 5 different versions of Samsung Galaxy S stock ROM back to my Samsung Galaxy S. One of these versions were Chinese, and everything was in Chinese.
Samsung Galaxy S had no signal was because the modem file was missing while you were performing the restoration.
Now, all you have to do is go to this page and follow the instructions to restore the Stock ROM back to your Samsung Galaxy S.

same problems
Hi guys, I have same problem. But a litle diffirent.
When I use 2.3.6 firmware version it's work well no problem. But when I use 4.x.x Rom it says no network and no imei. If I use 4.x.x om pluged the charge my device ,I see gsm company and imei number. It's very interesting. I think , electricty not enough for my device. Maybe Its hardware problems. I 'dont any idea.
How can I solve this problem?
Thanks.

[Q] HELP!Nexus s locked on one provider?!?

Hello everyone...
I have a "little" problem.
In my country there is 5 providers(Tele2,BonBon,Vip,Tomato,Simpa).My Nexus s was unlocked on all of them providers.But i was installing a new rom on my Nexus s,and my VIP card(provider) was in the phone while i was doing that.When i putted a new rom,suddenly Nexus s was locked on that provider(VIP) which was inside of the phone?I tried to reinstall and installed a new rom and nothing,i cant get it to unlock on that just one provider(VIP).Phone is now unlocked on all providers(Tele2,BonBon,Tomato,Simpa),but it isn't on VIP?Did someone had a similiar problem,and could you please help me?I would be very grateful!!!

GSM Nexus S are all unlocked.
Sent from my Nexus S using XDA App

Feeshie said:
GSM Nexus S are all unlocked.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
I see you don't understand me...Nexus s WAS unlocked,but when i installed a new rom,phone got locked on one provider(VIP)which was in the phone while i was installing the new rom...

Anyone?!?Please!
Sent from my Nexus S using XDA App

mimi12 said:
Anyone?!?Please!
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Device locking is done in the operating system, not the physical device. I have yet to see a custom ROM or ASOP to be sim locked.
Now keep in mind, the phone won't show APN's for other networks when you insert your SIM card. What is going on here is the device is reading your sim card to identify the provider then set the proper APN as default. To test if it's unlocked, try a different SIM in the device and see what happens.
Edit: I'm assuming you are talking about a SIM lock. If it's a lock of some other sort, please provide more details with EXACTLY what is going on.

Matridom said:
Device locking is done in the operating system, not the physical device. I have yet to see a custom ROM or ASOP to be sim locked.
Now keep in mind, the phone won't show APN's for other networks when you insert your SIM card. What is going on here is the device is reading your sim card to identify the provider then set the proper APN as default. To test if it's unlocked, try a different SIM in the device and see what happens.
Edit: I'm assuming you are talking about a SIM lock. If it's a lock of some other sort, please provide more details with EXACTLY what is going on.
Click to expand...
Click to collapse
Hello,first i want to thank you for your help.
My phone is unlocked for all providers except one provider(VIP).When i put (VIP) sim card,it says "emergency call only".I tried to Restore default APN,but when i press that it just says "Restoring default APN networks",after a while,it says it is completed,but still there it says"emergency call only".If i try to call anyone,it says Mobile network not available.When i go to "About Phone" menu,then "Status" it says:
Network-Unknown
Service state-Out of service
Roaming-Not roaming
Mobile network state-Disconnected
Other informations:
Model number-Nexus s
Android version-2.3.6
Baseband version-I9020AUCKF1
Build number-GRK39F
So this is it,my phone is locked to only one provider(VIP),if i put any other sim card provider(Tele2,BonBon,Tmobile...)the phone is working well,i can call anyone,text etc.Thank you in fowards...

mimi12 said:
Hello,first i want to thank you for your help.
My phone is unlocked for all providers except one provider(VIP).When i put (VIP) sim card,it says "emergency call only".I tried to Restore default APN,but when i press that it just says "Restoring default APN networks",after a while,it says it is completed,but still there it says"emergency call only".If i try to call anyone,it says Mobile network not available.When i go to "About Phone" menu,then "Status" it says:
Network-Unknown
Service state-Out of service
Roaming-Not roaming
Mobile network state-Disconnected
Other informations:
Model number-Nexus s
Android version-2.3.6
Baseband version-I9020AUCKF1
Build number-GRK39F
So this is it,my phone is locked to only one provider(VIP),if i put any other sim card provider(Tele2,BonBon,Tmobile...)the phone is working well,i can call anyone,text etc.Thank you in fowards...
Click to expand...
Click to collapse
This is NOT a sim lock. What is going on is that your phone has lost it's APN settings or is using the wrong modem. a sim lock means that your phone will only work with 1 provider, installing the SIM from a different provider will give you an error message similar to this: ‘SIM not valid’, ‘SIM locked’ or ‘SIM not accepted’
Since the phone is working on other providers, i would believe that the phone has lost it's APN settings for VIP. I would look up the APN settings for VIP and manually put them into the phone and go from there.
A quick search found a thread with the APN settings:
http://forum.xda-developers.com/showthread.php?t=679892
Good luck.

Hello again and once again thank you.I tried what you said for APN,but it didn't work.Is there anything else?!?
Sent from my Nexus S using XDA App

Try to flash another Radio. I never had luck with KF1, and quite frankly it kept me from getting any service at all for like 2-3 reboots after.
Try KD1, or KB3 (those work for me).
Reboot a few times, and see if it works.

stuff said:
Try to flash another Radio. I never had luck with KF1, and quite frankly it kept me from getting any service at all for like 2-3 reboots after.
Try KD1, or KB3 (those work for me).
Reboot a few times, and see if it works.
Click to expand...
Click to collapse
Thank you,i flash to KD1,after that i put Tmobile card and turned it on,and emergency call,my thoughts were "OMFG what have i done!?"After that i thought i will reboot it and see how it goes.I put him i fastboot mode and then rebooted him,and i got signal.After that i did it the sam with VIP card,and now is working like charm.Once again thank you for trying to help me with my problem,i am very grateful!

job well done....case closed
Sent from my Nexus S 4G using XDA App

Unable to use my Nexus S
Matridom said:
This is NOT a sim lock. What is going on is that your phone has lost it's APN settings or is using the wrong modem. a sim lock means that your phone will only work with 1 provider, installing the SIM from a different provider will give you an error message similar to this: ‘SIM not valid’, ‘SIM locked’ or ‘SIM not accepted’
Since the phone is working on other providers, i would believe that the phone has lost it's APN settings for VIP. I would look up the APN settings for VIP and manually put them into the phone and go from there.
A quick search found a thread with the APN settings:
http://forum.xda-developers.com/showthread.php?t=679892
Good luck.
Click to expand...
Click to collapse
Hi,
I am facing a similar issue. My Nexus S is running on 4.0.3 with baseband version I9023XXKI1 (Got it in UK, unable to use it in India). No matter what SIM I insert it stays in Out of service mode. Can you please suggest which Radio version I can flash to get rid of this issue? Please help!!

Hi, check this thread, it may help you:
http://forum.xda-developers.com/showpost.php?p=11686273&postcount=14

LG-C555 from Koodo to Fido

Hi all,
My LG C555 (Optimus Chat) is "network-unlocked" (done with the help of a Koodo technician) but it won't connect to the Fido network (GSM and/or HSPA network), it will never authenticate my Fido SIM card
I've searched everything on the web and it looks like even though the phone is "unlocked", there is still a value somewhere on the phone that still says it's related to Koodo provider?! An hard-reset won't do anything different unfortunately.
W/Flex ( 1396): getString FLEX_COUNTRY_CODE CA
W/Flex ( 1396): getString FLEX_OPERATOR_CODE TLS
Click to expand...
Click to collapse
What can I do to make it work on my Fido network?
Could I install a new ROM which would erase those "operator" values?
If so, which ROM/tools should I use?
Thank you all for your time,
highmighty

Hi all,
How can I get to the bootloader menu on this LG-C555?
Also, where could I find firmware files (or even the stock one) for this specific model?
Thank you all for your time,
Regards,
highmighty

[Q] Help required - Nexus S i9020

I bought this Nexus S, i9020. It's just a couple of days old. Had ICS 4.0.4 and when connected to WiFi, phone started downloading latest system update. Installed the update quickly. The battery however, started draining too quickly after the update.
My problem or nightmare started when I tried to revert or downgrade this cellphone to Gingerbread 2.3.6, because I read that on GB, this phone's battery lasted for more than a day.
Anyhow, when I downloaded this One_Step_Click guide for downgrading to GB 2.3.6, the phone actually downgraded, but to my utter surprise, it has downgraded to Sprint Nexus S 4G, the phone now shows following:
Model number: Nexus S 4G (which it's not, its Nexus S i9020)
Android version: 2.3.4
Baseband version: Unknown
Kernel version: 2.6.35.7-ge382d80
Build number: GRJ22
The phone has lost the GSM signal, although SIM is still in the SIM slot. I can still connect to WiFi and connect to my Google account.
FYI, i am using Ufone GSM network here in Karachi, Pakistan.
Need urgent help in restoring my Nexus S to its original state to be able to use on GSM network.
Appreciate your help.
Thanks.

Seems like you are actually messed up. So you want Gingerbread 2.3.6 on your NS, right?
Just confirm me one thing, is it I9020T or I9020A? I'll be easily able to help you then

DJBhardwaj said:
Seems like you are actually messed up. So you want Gingerbread 2.3.6 on your NS, right?
Just confirm me one thing, is it I9020T or I9020A? I'll be easily able to help you then
Click to expand...
Click to collapse
Thanks for replying to my thread.
Yes, i am actually messed up.
The inside of the phone i.e. under the battery is only written i9020, nothing more nothing less.
Really appreciate your reply and help.
Thanks.

So, it is I9020T
Check your PM :good:

DJBhardwaj said:
So, it is I9020T
Check your PM :good:
Click to expand...
Click to collapse
I am facing a similar issue (in Pakistan) and can't seem to find the right baseband/radio. I tried almost all radios at http://forum.xda-developers.com/showthread.php?t=1116884 but the problem remains - I get very very low signals (my SIM works fine on other phones). Any PM for me as well

kamran666 said:
I am facing a similar issue (in Pakistan) and can't seem to find the right baseband/radio. I tried almost all radios at http://forum.xda-developers.com/showthread.php?t=1116884 but the problem remains - I get very very low signals (my SIM works fine on other phones). Any PM for me as well
Click to expand...
Click to collapse
Get your radio from https://developers.google.com/android/nexus/images#soju download the correct version for you model, un tar (or 7-zip), you should find your radio image within.

LTE and 3G not working anymore on G930T

Hello guys,
I got a Samsung Galaxy S7-G930T T-Mobile, and since yesterday, 4g and 3g aren't working anymore and my phone is showing 2g only...
I have already checked the settings and it is on LTE/3G/2G, and I have also checked the APN settings and they are good..
I have done a factory reset = didn't work
I have reinstalled the firmware = didn't work either..
I have checked if it was the SIM card problem by testing it on another 4g phone, and 4g worked perfectly..
The problem on my phone is that when i'm trying to force 3g only or 4g only, I lose all the signal (i can't even make phone calls) until I use 2g again..
So the problem is that my phone isn't supporting 3g or 4g anymore but only 2g..
Phone model number: SM-G930T
Android version : 7.0
Baseband version: G930TUVU4BQG5
Build Number : NRD90M.G930TUVU4BQG5
Thank you guys for helping me..

were u able to resolve it. i'm in a similar situation
penaimr said:
Hello guys,
I got a Samsung Galaxy S7-G930T T-Mobile, and since yesterday, 4g and 3g aren't working anymore and my phone is showing 2g only...
I have already checked the settings and it is on LTE/3G/2G, and I have also checked the APN settings and they are good..
I have done a factory reset = didn't work
I have reinstalled the firmware = didn't work either..
I have checked if it was the SIM card problem by testing it on another 4g phone, and 4g worked perfectly..
The problem on my phone is that when i'm trying to force 3g only or 4g only, I lose all the signal (i can't even make phone calls) until I use 2g again..
So the problem is that my phone isn't supporting 3g or 4g anymore but only 2g..
Phone model number: SM-G930T
Android version : 7.0
Baseband version: G930TUVU4BQG5
Build Number : NRD90M.G930TUVU4BQG5
Thank you guys for helping me..
Click to expand...
Click to collapse