[Q] No mobile signal after CM9 + modem, but can see networks - Galaxy Tab Q&A, Help & Troubleshooting

I flashed the latest CM9 nightly two days ago, and everything seems to work great other than that I have no mobile signal. I am an Australian Optus user, and I tried it both with the modem that came with CM9 and with the one I believe is for my country, which is XXJQ3 by flashing that.
In both situations, I can scan for networks and see all three carriers just fine, but it shows no signal, just an "x" in the middle of the signal triangle, nor does it show which carrier it is connected to. I cannot make emergency calls because it says no mobile network is available.
Is this a modem baseband/firmware problem ? I am guessing not, because I would think that if it can physically see the networks, then the modem must be working right ? But if so, why can it not connect to anything ? The modem firmware I am using is for ICS and I believe it is the correcto one for my region, and I have enabled everything in the modem settings but still it will not connect to any network. Why ?

pawz said:
I flashed the latest CM9 nightly two days ago, and everything seems to work great other than that I have no mobile signal. I am an Australian Optus user, and I tried it both with the modem that came with CM9 and with the one I believe is for my country, which is XXJQ3 by flashing that.
In both situations, I can scan for networks and see all three carriers just fine, but it shows no signal, just an "x" in the middle of the signal triangle, nor does it show which carrier it is connected to. I cannot make emergency calls because it says no mobile network is available.
Is this a modem baseband/firmware problem ? I am guessing not, because I would think that if it can physically see the networks, then the modem must be working right ? But if so, why can it not connect to anything ? The modem firmware I am using is for ICS and I believe it is the correcto one for my region, and I have enabled everything in the modem settings but still it will not connect to any network. Why ?
Click to expand...
Click to collapse
did you have try replace/update the modem radios from this? http://wiki.cyanogenmod.com/wiki/Samsung_Galaxy_Tab_(GSM):_Support_Downloads
you can try a different modem, It doesn’t matter if you prefer another modem, you can flash another modem, you can try flash any modem file you want, it's will not brick your tab
If you had, but still not working, then go to dialer, put this code *#*#4636#*#*, pick tablet information, try turn of the radio then turn on again and try to fix permission on cwm too.
good luck.

qm4n76 said:
did you have try replace/update the modem radios from this?
(url redacted)
you can try a different modem, It doesn’t matter if you prefer another modem, you can flash another modem, you can try flash any modem file you want, it's will not brick your tab
If you had, but still not working, then go to dialer, put this code *#*#4636#*#*, pick tablet information, try turn of the radio then turn on again and try to fix permission on cwm too.
good luck.
Click to expand...
Click to collapse
Thanks. Tried all your suggestions. Yes, that is where I obtained my XXJQ3 modem, which I flashed via CWM. I tried your other tip of turning the radio off and on again and then fixing permissions in CWM but to no avail. Still no mobile signal.
Is it correct to assume that if the device can scan for networks and see networks, then the modem is working ? The information screen you directed me to says "emergency calls only", but I cannot actually make an emergency call because it says "mobile network not available", so even though it can "see" three networks, it cannot connect to any of them to either get a signal or make emergency calls.
What does this mean ? Surely it has the right frequencies set otherwise it wouldn't see the networks at all, right ? Is this a CM9 bug in the nightly I flashed or something ? Wondering where to look. I get the feeling the modem is working fine and that something else is wrong.

I use the jlv modem from the vibrant phone.
But jpz modem is also OK for optus.
Why not do Android backup for safe keep, then restock using gb stock safe from overcome guide, and flash jpz modem to try.
If it is the same, then it is hardware related.
Sent from my GT-P1000 using XDA

Oh my god. The reason it didn't work work is so stupid I had to headdesk when I realised. The SIM I was using was old and had been disabled. The reason I didn't think it mattered, is that in Gingerbread, it would still register and show reception bars and I could make emergency calls with the old SIM, or indeed even without a SIM in the device at all. But in ICS, none of that was the case, and it would not register and not let me make emergency calls without a valid SIM.
I guess I was just making a stupid assumption that SIM-less emergency calls that worked in GB would also work in ICS. Stupid me.

Everyone can make mistakes or forget something, but you should thank all the users who give you answers.
Sent from my GT-P1000 using XDA

Related

gingerbread att tab

Just flashed the new gingerbread rom. Works great but it doenst recognize my sim card or network. I have att tab. Any help to restore it?
Did you remember to download the Modem package too? That's what I'm guessing.
sent from my Galaxy Tab using Cerebral up-link
Did you flash the version with the bootloader? Any whiteline issue on boot?
No I didn't download or flash a modem do I need to? I flashed the one with the bootloader. No whiteline I noticed.
I flashed with bootloader, tried 2 different modems, and no network. wifi works. tried flashing back to stock and everything went crazy. While I was using Odin, I STUPIDLY, plugged in my Captivate to charge without thinking, causing Odin to fail and I got the "phone - ! - PC" Icon.......talked about scared! Ended up using Roto's ATT stock image and Odin to get it back running again,barely. Now I get CRAZY lines when I boot (like if you tweaked the cable to an LCD screen), can't see Recovery screen....total craziness. Still no data. so I flashed back to OverCome Gingerbread ROM following his instructions, still no data
UNTIL
I swapped the SIM card with my phone. I suddenly got data on my Tab, but data would not function on my phone. Seems like the problem follows my SIM. Background: I also had a weird issue before hand where I couldn't open the Market on Cellular data without killing the data connection on Stock Rooted.
Thought I'd share.
EDIT: oh, and I can send text messages without issue.
Go to Settings, Wireless & Network, Mobile Networks, Access Point names and make sure you have one called Broadband (assuming you are on the ATT monthly data only plan)
If you dont, create a new APN and name it Broadband & make the APN Broadband as well. Just leave the other options and save it & select it.
I think by default it comes up with the ATT wap.cingular APN with doesnt work with the Tab Data plan.
RichAP said:
Go to Settings, Wireless & Network, Mobile Networks, Access Point names and make sure you have one called Broadband (assuming you are on the ATT monthly data only plan)
If you dont, create a new APN and name it Broadband & make the APN Broadband as well. Just leave the other options and save it & select it.
I think by default it comes up with the ATT wap.cingular APN with doesnt work with the Tab Data plan.
Click to expand...
Click to collapse
Well Son of B....you rock. What pisses me off is I've screwed up my boot screen (all kinds of colored lines) trying to fix this. Thanks.
Maybe this will help: http://forum.xda-developers.com/showthread.php?t=928076
Sent from my GT-P1000 using XDA Premium App
Gingerbread 2.3.3 installed modem does not work
AT&T monthly pay as you go. What modem.bin do I load? Where can I get it. Is there any additional setup instructions?
Follow my instructions above and flash the JK3 modem fromt this thread.
http://forum.xda-developers.com/showthread.php?t=1069727
Mine keeps saying insert sim card to access. So how do I get it to recognize the sim?
Please anyone with some help? Can I store back to original att froyo and just wait for official upgrade?
Have you guys entered in your APN settings for ATT Broadband?
I am also having a strange radio issue. I am using an ATT Tab with Overcome v2.0 Beta 2 and the JK3 modem. 3G data works great until I try to access the Google Android Market. As soon as I do it drops the 3G connection and wont come back until I reboot it. If I dont go to the market or only go to the market on WiFi it works just fine. I also verified that the same behavior happens with the JPZ modem..
My theory is somehow ATT is blocking Gingerbread Tabs from going to the market using their SIM card. Therefore I think maybe I need to edit my build.prop to spoof them. Can anyone recommend which values should be changed? Can anyone think of anything else that could cause this? Can anyone reproduce this issue on their ATT tab?
swedishcancerboi said:
Well Son of B....you rock. What pisses me off is I've screwed up my boot screen (all kinds of colored lines) trying to fix this. Thanks.
Click to expand...
Click to collapse
You used the bootloader patch app, right?
Reinstall the stock 2.3, then the root, then overcome. Follow the overcome guide, this time put the modem.bin in the phone slot in odin. There is no other fox for the wiggly lines. If you don't reflash everything, you can't get into recovery mode.
i cant get into the network settings as it tells me to insert a sim. I tried to flash the modem as well with no luck.
ok so I turned on my tab to play with it a bit and I had data! It was an H and seemed to work. When I restarted the tab it stopped working and said no sim again.
1) The Gingerbread rom has a modem with it that works fine on AT&T.
2) Did you leave your sim card in while flashing?
i did leave my sim in while flashing. Should I have it out? It seems the tab only recognizes the sim card every so often. Not all the time. Any way to flash the sim recognition part?
Could you please post how you flashed your att tab so I can follow it? Thanks.

"I9000M Your SIM card does not allow a connection to network" after installing CM7

"I9000M Your SIM card does not allow a connection to network" after installing CM7
I have signal for emergency calls and everything, but my phone will not connect to the carrier. I verified that the phone's IMEI matched the one on the case and tried to manually select the carrier but have had no luck.
This is on Virgin Mobile btw.
Try flashing either the JK4, JL2 or KC1 modem from the 4th post of this thread :
http://forum.xda-developers.com/showthread.php?t=1053304
(those are the ones that work with the 850mhz band)
Simply click on install zip from recovery, then chose the modem file.
My carrier is Bell and the JL2 works best for me.
You can also try wiping cache/dalvik cache from recovery, it solves a lot of problems.
My carrier is bell as well and I also find JL2 works the best
Sent from my GT-I9000 using XDA Premium App
Dinglehoofis said:
I have signal for emergency calls and everything, but my phone will not connect to the carrier. I verified that the phone's IMEI matched the one on the case and tried to manually select the carrier but have had no luck.
This is on Virgin Mobile btw.
Click to expand...
Click to collapse
hi mate u jz update to 2.33 all will be fine ...i just finish 1 on sgs
koflem said:
Try flashing either the JK4, JL2 or KC1 modem from the 4th post of this thread :
http://forum.xda-developers.com/showthread.php?t=1053304
(those are the ones that work with the 850mhz band)
Simply click on install zip from recovery, then chose the modem file.
My carrier is Bell and the JL2 works best for me.
You can also try wiping cache/dalvik cache from recovery, it solves a lot of problems.
Click to expand...
Click to collapse
Can these be used with Darky's ROM? In an effort to make things work I tried a different ROM, same result though. All the numbers matching and everything still but no SIM. I also noticed that the signal type it's trying to use is GPRS and iirc Bell is HSDPA, no? I'm guessing that may have something to do with it?
I don't think so, the links I posted are for cm7. If you want modems for other roms, check over there :http://forum.xda-developers.com/showthread.php?t=876391
You can also try using the *#301279# dialer code to see if HSDPA is activated (but the code doesn't work on cm7)
I used ugkc1 for darkys rom in the past

Recovered from camera problem...now dealing with network issue!! PLEASE HELP!!

A few months ago, i had the non-function problem with my camera after using the firmware update code, on my SG I9000. I resolved that with some help from a friend, by downgrading to Eclair (JM1_JM1_U_JM1.tar) and switching the camera files - the usual method. After reboot, the camera was working fine but appeared the problem with the network - "NO SERVICE".
Till now, I used different versions of android (Eclair, Froyo, Gingerbread) to fix it without any luck.
If you know any other method, i'll owe you one big time.
Thanx!
Note: I have to say that, before having the camera issue, I unlocked my rooted phone using "GALAXY_S UNLOCK" from Android Market.
maybe you can try to flash your phone to the latest firmware such as XXJVU by using odin.
have you rooted your phone again after using different android version? if not, try rooting it, then unlock it with apps from the market, this would fix the "no service" problem.
you could also try flashing it with a different modem.
lim_kobe2005 said:
maybe you can try to flash your phone to the latest firmware such as XXJVU by using odin.
Click to expand...
Click to collapse
Yes, I've tried different versions of firmware...even the latest one, but no luck until now.
Thanx for the answer!
spyder_pirate said:
have you rooted your phone again after using different android version? if not, try rooting it, then unlock it with apps from the market, this would fix the "no service" problem.
you could also try flashing it with a different modem.
Click to expand...
Click to collapse
I tried flashing with different modem but without any good result until now. Today I'll try again with a different modem (something with a file "7zip" transformed in a folder ".tar"...I'm new with this, i know nothing about it so a friend is helping me).
If this doesn't work, I'm trying the rooting method you're telling me about.
Thanx for all!
The JVT modem is pretty god as well. you can flash the tar or zip files by using sgs kernel flasher from market or by odin.
apple23 said:
The JVT modem is pretty god as well. you can flash the tar or zip files by using sgs kernel flasher from market or by odin.
Click to expand...
Click to collapse
Thanx guys!
It seems that I resolved it, using the I9000XXJVU_I9000OXAJVU_OXA modem (Open Europe). At first, when the phone rebooted there was no signal...it appeared that the problem persisted, but now, after the factory reset (*2767*3855# ) everything seems to work just fine.
Still, I don't remember if SGS signal icon shows the 3G indicator in the upper taskbar (like the SGS 2), because mine doesn't! Can anyone confirm if it's wright or not?
Last edit: It seems the 3G doesn't work, as i tried to access the internet an icon pops saying "No network connection / Cannot connect to internet. Please check your connection settings and try again" - "Settings" and "Ok". If I press "Settings", it takes me to the "Wireless and Network" Menu.
SO, ANY CLUE?
Thanx again!
Have you tried flashing a different modem? What carrier are you on and what modem are you currently using?
Had a bit of a browser glitch, there were zero replies a minute ago.
Stealth316 said:
Have you tried flashing a different modem? What carrier are you on and what modem are you currently using?
Had a bit of a browser glitch, there were zero replies a minute ago.
Click to expand...
Click to collapse
I'm using an Orange Romania prepay card...and now the installed version is I9000XXJVU (the latest 2.3.6 - Open Europe).
I have signal but without 3G, i think, cause the internet connection doesn't work...only wi-fi does.
with the 3g problem, i think you need to edit your apn settings.
settings > wireless and network > mobile network settings > access point names
this is network specific and you might want to check it with your provider
spyder_pirate said:
with the 3g problem, i think you need to edit your apn settings.
settings > wireless and network > mobile network settings > access point names
this is network specific and you might want to check it with your provider
Click to expand...
Click to collapse
I'll check the APN settings later today, after work, and if the problem persist I'll take it to Orange Romania.
I'll let you know the result!
Thanx everyone for your help!
sebastian_banica said:
I'll check the APN settings later today, after work, and if the problem persist I'll take it to Orange Romania.
I'll let you know the result!
Thanx everyone for your help!
Click to expand...
Click to collapse
I got home, set on my SGS the same APN settings from the SGS-2 I'm using now with the Orange Romania card, and it seems to work...at least I don't get the "No network connection / Cannot connect to internet" message anymore and the H/3G icon now appears near the signal icon in the upper taskbar.
I stiil have to run some tests to be 100% sure it really works.
I'll be in touch!

I9000L no signal issue.....

Well, just as the title says. I have an I9000L in here that has no signal. Thought it might be an issue with csc files since it was updated to ICS, but then i flashed it back to gingerbread and nothing change. I used the stock rom with no luck, problem is that it shows imei, baseband and everything in place. Thinking it might be a hardware problem to this point. But i oppened it and everything seems in place. Just wondering if it may have a burned baseband chip. But then again it shows the baseband version so my guess is thats not the case. Could someone help me on this???
enelyam said:
But then again it shows the baseband version so my guess is thats not the case. Could someone help me on this???
Click to expand...
Click to collapse
Check your network settings
menu.settings>wireless and networks > mobile networks
or try https://play.google.com/store/apps/...SwxLDEsImNvbS5ha3ZlbG9uLnNpZ25hbHRyYWNrZXIiXQ..
Nope, no luck with the apk. Neither checking network or anything like that. The phone will just not allow me to do so. Like i said, the weird thing is that everythin seems to be working fine. I have an efs backup so i deleted the nv_data.bin to check if the phone is creating a new one and it is. It shows baseband, imei and everything. im starting to guess its a hardware failure but then again. The phone is almost brand new. I mean it was bought not too long ago. It was unlocked, and after flashing it shows multiple csc contents. I have fix something similar to this by applying the PCT csc(Claropr csc). But this time nothing is working...
The reason you didn't have a signal on ics is probably due to the fact you didn't flash a modem from here http://forum.xda-developers.com/showthread.php?t=1158783
[CM7/MIUI/ICS/CM9][06.01.12] Modems + Bootloaders(MD5)
So it might be worth going back to ics, doing that to get your signal back, and then reverting to Sammy Rom to see if that sorts it....btw there are no csc files on aosp/cm9 Roms
Okay thanks M8, one other thing. Initially the phone had signal on ICS. It was DOCs ICS if i can remember. I think that custom firmware will flash a new modem? Or not? And is it possible that it had signal and lost it because of that? Anyways thanks i will give it a try then....
enelyam said:
Okay thanks M8, one other thing. Initially the phone had signal on ICS. It was DOCs ICS if i can remember. I think that custom firmware will flash a new modem? Or not? And is it possible that it had signal and lost it because of that? Anyways thanks i will give it a try then....
Click to expand...
Click to collapse
Some ics Roms do, some don't, you can always flash another in recovery of the one that comes with Rom is no good for your region
ALWAYS make sure you are using the right radio for your phone. It solves many network issues
Ok then so i guess it might be a hardware issue if thats the case. Because i have use that rom before on a i9000 and never seen something like this. Hummm! Ive done just about everything and i cant still get signal. Goshhh! I rather have the phone showing no baseband or something than dealing with this....
You have checked your apn settings haven't you?!
Yeap M8 APN settings are correct. But in fact APN settings have nothing to do with the cell phone signal in terms of calls. If your phone is working it will receive the signal. The APN settings as far as im concerned will just set the internet and mms settings. Maybe with them set the phone will try to reach the towers(Antennas) but anyways the APN settings are correct.

i9305 no mobile signal..what else can i try ?

I Have had this i9305 now without mobile signal, with a vodaphone it did used to show signal but in all cases it always says 'no mobile networks' or 'not registered on network' i have tried with every sim i can think of... it was suggested to flash a stock rom which i did..this made no difference, i then tried installing CM11 and followed the guide to the letter.
I know this phone is not blacklisted as i checked with the imei, i have tried flashing different modems but to be honest im not sure what i am flashing to it..i have tried three different ones now starting with XX as i am in uk...i really dont know if i have missed something or doing something drastically wrong..i have read and read and usualy i would have had this resolved by now...can anyone please help me as i want to give this handset to my girlfriend for a present very soon so we can keep in touch..i am at my wits end with it:crying:
Thanks
Try an emergency restore through Samsung Kies - this should eliminate any software related problem. Sounds to be a hardware problem though so get Triangleaway going and send it for repair if that doesn't work.
Flash 4.1.2, then enable and disable the LTE-only mode hack in the hidden service menu (the *#2263# one, not *#*#4636#*#*). (If you have root, you can also access that menu in 4.3 or even the 4.4.2 port, but it's a bit more involved.)
Sent from my GT-I9305 using XDA Free mobile app
Magik_Breezy said:
Try an emergency restore through Samsung Kies - this should eliminate any software related problem. Sounds to be a hardware problem though so get Triangleaway going and send it for repair if that doesn't work.
Click to expand...
Click to collapse
it won't let me do that as it doesn't list the phone as needing an emergency recovery. I flashed a stock rom and the signal is showing but it keeps saying not registered on network.. if I do a search it finds providers but when I opt for the provider of the sim it just perpetually spins at registering on network.
.NetRolller 3D said:
Flash 4.1.2, then enable and disable the LTE-only mode hack in the hidden service menu (the *#2263# one, not *#*#4636#*#*). (If you have root, you can also access that menu in 4.3 or even the 4.4.2 port, but it's a bit more involved.)
Sent from my GT-I9305 using XDA Free mobile app
Click to expand...
Click to collapse
when you say 4.1.2 which rom.. A stock one or a custom.. could you point me please ?.. The stock rom I have flashed is 4.1.3 I didn't flash a radio after as being stock it would be there already ??
Have just followed a guide to root this unit, upon installing root checker it says this device does not have proper root, Odin reports that everything went ok and i get the red pirate android..when the phone boots a pop up comes up saying unfortunatley SU has stopped working... not sure whether KNOX is stopping this ?
no network.
Hellow to you all.
I have got a problem in my s3 LTE.
After installed several rooms my lte not register in WCDMA network.
The mobile phone was from a french network. Bouygues and was unlocked in portugal.
i have got many problems with this phone but i like it very mutch.
the problem that bothers me the most is that i only make and receive calls with full network.
The WCDMA was not working but i allready fix it. Now when i turn to wcdma only it says not register in networck.
the only backup i have from the EFS folder was made by copy- paste and i think the problem was allready there and now i think i had brocken my phone. can you help me???
Excuse my englisb.
967571918 said:
Hellow to you all.
I have got a problem in my s3 LTE.
After installed several rooms my lte not register in WCDMA network.
The mobile phone was from a french network. Bouygues and was unlocked in portugal.
i have got many problems with this phone but i like it very mutch.
the problem that bothers me the most is that i only make and receive calls with full network.
The WCDMA was not working but i allready fix it. Now when i turn to wcdma only it says not register in networck.
the only backup i have from the EFS folder was made by copy- paste and i think the problem was allready there and now i think i had brocken my phone. can you help me???
Excuse my englisb.
Click to expand...
Click to collapse
please start your own thread as it is not relevant to mine.
Someone's suggested this phone is barred.. I have run a check which says it's not blocked but it's been suggested that this is unreliable...I have bars showing but just never registered on network.
Does your IMEI reported in *#06# match the one printed under the battery?
Sent from my GT-I9305 using XDA Free mobile app
hey loady,
did you manage to solve theproblem? i have the same problem since roughly 3 weeks. but honestly, i didnt put much effort in fixing it.
i found a big thread a while ago where the problem is solved... i'll look for it

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