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Phone will not recognize sim/ imei "Unknown"/ baseband "Unknown"? *Updated*

Phone will not recognize sim/ imei "Unknown"/ baseband "Unknown"? *Updated*
Updated title because problem has now changed.
current problem--
Phone is stock, randomly stopped getting signal factory reset phone using keypad, now phone will not recognize sim card, the imei is blank and the baseband is unknown. Tried reseating the sim, and powering on off.
initial problem--
After having a problem free note for some time now it randomly stopped working. I cannot make a call/ text or use data but the wifi works and the phone functions outside of those uses. When making a call I get various errors in the form of Mobile network not available/ Not registered on network and when i go into mobile networking settings> network operators it takes a while when searching and tells me to either try again later or gives me a message "error while searching for networks." When i take the sim out all together I get bars of service but when the sim is in it either gives me a circle with a line through it or a empty signal bar triangle.
I called straight talk customer support as i thought it was a problem with the service and they told me I had a bad sim card. I have since checked the sim in another phone and it works fine. I have tried multiple working sims in other phones and no luck in mine. The phone appears to be recognizing the sim as the apn settings are adjusting based on what sim i put in. I have tried to take out the battery, take out the sim, factory restore but nothing seems to work. I have also checked the imei number online to see if it was blocked or something and it said it was not. I took it to a local phone repair shop but after toying around with it for a hour they didn't know what was wrong, so here i am, hopefully someone can point me in the right direction. thanks.

May be the phone is network locked. is it asking for some kind of key or pin anytime or when restarting the phone?
where did this begin to happen?

nokiamodeln91 said:
May be the phone is network locked. is it asking for some kind of key or pin anytime or when restarting the phone?
where did this begin to happen?
Click to expand...
Click to collapse
No, its not asking for anything. I was like 10 miles from my house when it began happening and has continued since I got home.

have you tried changing modems?

nokiamodeln91 said:
have you tried changing modems?
Click to expand...
Click to collapse
Changing modems? I am not familiar with what that means?

http://forum.xda-developers.com/showthread.php?t=1645202

After doing a factory reset using the keypad, *2767*3855#, it now says it doesn't recognize my pin and when i type *#06# IMEI comes up with nothing after it. Also, my baseband is now unknown. Is my imei corrupted or something?

Are you on a custom ROM...do you have imei backup... did you try to reseat the sim card
Sent from my GT-N7000 using Tapatalk 2

asf58967 said:
Are you on a custom ROM...do you have imei backup... did you try to reseat the sim card
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
everything is stock, I have tried taking the sim out and putting it back in. it was recognizing the imei, sim and baseband prior to the factory reset I just wasn't getting a signal. now it doesn't seem to recognize anything.

Possibly a bad sim.. you should try a friends att dim and see what happens
Sent from my GT-N7000 using Tapatalk 2

asf58967 said:
Possibly a bad sim.. you should try a friends att dim and see what happens
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
I know the sim isn't the problem as it works in another phone.

You may want to try flashing stock GB with PC Odin...then with stock GB recovery do a factory reset.
Don't do anymore factory resets if your on ICS and completely stock - you will kill your device...see the brick bug sticky
Sent from my GT-N7000 using Tapatalk 2

josh3336 said:
I know the sim isn't the problem as it works in another phone.
Click to expand...
Click to collapse
when you go to settings> about phone > dont you see IMEI ?

nokiamodeln91 said:
when you go to settings> about phone > dont you see IMEI ?
Click to expand...
Click to collapse
It says "Unknown"

go to /efs and see if you have all the data.. should be about 5MB folder

asf58967 said:
You may want to try flashing stock GB with PC Odin...then with stock GB recovery do a factory reset.
Don't do anymore factory resets if your on ICS and completely stock - you will kill your device...see the brick bug sticky
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
I am using stock and using ICS , whoops, thanks for the information.

nokiamodeln91 said:
go to /efs and see if you have all the data.. should be about 5MB folder
Click to expand...
Click to collapse
I'm assuming i have to root my phone in order to look at this folder? I'm looking into this now.

yes.

when restarting phone do you get the password prompt for the sim pincode, could be sim is not registered?
Anyways a stock phone should not do this. Its a case for customer service to fix efs. That appears to have instantaniously corrupted(!) first case I have ever seen of this.
Almost cannot believe it.
Without sim, is the imei there? I am suspecting your emei was gone before which you never noticed then. Is it even a new phone?
note rooting might void warrantee, so be careful
Sent from my GT-N7000 using Tapatalk 2

nokiamodeln91 said:
yes.
Click to expand...
Click to collapse
I used es file explorer and within the efs folder there were 5 mb worth of files.

Can´t use simcard: `emergency only`

Hello,
I have a Samsung Galaxy Ace S5830 for 3 years now. I flashed different roms and did root my phone in all these years. But... now i received a new sim card which works well in other phones but NOT in my ace. So that must be a problem with my ace.. I just flashed back to the stock rom (XEN - Netherlands S5830XENKS1) via ODIN but the problem is still there, i can't use my sim-card: "Emergency only".
I already wiped data and cleared cache, hard reset... nothing works. What could i try to have my phone back working with sim card so i can call, sms and use my dataplan. My phone have no simlock i checked and the IMEI is also the right. The one shown by #06# is the same as printed behind my battery. I also received a new sim card from my provider, but this one also has the same problem.
I hope you guys can help me out! :good::good::good:
UPDATE 1: I tried differend sim cards in the phone. I always used to have T-Mobile as provider. All other simcards are not working, theyre showing up for a few seconds and after that it says: Emergency calls only. When i put in a T-Mobile sim card the provider keeps displayed, so it looks like my phone only works with a t-mobile card. But it's not sim locked, because i also used differend sim cards before..
UPDATE 2: Now my simyo simcard also connects and i can sms, call and internet. But after a few seconds/minutes again the message: Emergency calls only
WHAT COULD THIS PROBLEM BE??!!??! Strange.............. I really hope someone can help me out this

Soldaatt said:
Hello,
I have a Samsung Galaxy Ace S5830 for 3 years now. I flashed different roms and did root my phone in all these years. But... now i received a new sim card which works well in other phones but NOT in my ace. So that must be a problem with my ace.. I just flashed back to the stock rom (XEN - Netherlands S5830XENKS1) via ODIN but the problem is still there, i can't use my sim-card: "Emergency only".
I already wiped data and cleared cache, hard reset... nothing works. What could i try to have my phone back working with sim card so i can call, sms and use my dataplan. My phone have no simlock i checked and the IMEI is also the right. The one shown by #06# is the same as printed behind my battery. I also received a new sim card from my provider, but this one also has the same problem.
I hope you guys can help me out! :good::good::good:
UPDATE 1: I tried differend sim cards in the phone. I always used to have T-Mobile as provider. All other simcards are not working, theyre showing up for a few seconds and after that it says: Emergency calls only. When i put in a T-Mobile sim card the provider keeps displayed, so it looks like my phone only works with a t-mobile card. But it's not sim locked, because i also used differend sim cards before..
UPDATE 2: Now my simyo simcard also connects and i can sms, call and internet. But after a few seconds/minutes again the message: Emergency calls only
WHAT COULD THIS PROBLEM BE??!!??! Strange.............. I really hope someone can help me out this
Click to expand...
Click to collapse
I think your device has a problem to make contact with sims cards, so your device have a trouble accessing read and use sim cards... You can send your device to the support service, to check or try to fix it...Have your warranty still in effect?

Viper The Ripper said:
I think your device has a problem to make contact with sims cards, so your device have a trouble accessing read and use sim cards... You can send your device to the support service, to check or try to fix it...Have your warranty still in effect?
Click to expand...
Click to collapse
Hello, thanks for your reply! No, my warranty is not active anymore. My phone is 3 years old. Today i went to another city and could call and sms the whole day. No internet. When i came home, i received again the message: emergency only. How strange.. I also could'nt find a good rom or firmware to flash back my phone to the full original software and firmware... Can someone help me on that? I need the newest firmware for the samsung galaxy ace s5830, netherlands version. Or maybe a custom rom which is the most used and stable version. I would like to exclude software reasons, so it might be a hardware problem. But i think it's a software fault cause of the different roms i tried on the phone.

Soldaatt said:
Hello, thanks for your reply! No, my warranty is not active anymore. My phone is 3 years old. Today i went to another city and could call and sms the whole day. No internet. When i came home, i received again the message: emergency only. How strange.. I also could'nt find a good rom or firmware to flash back my phone to the full original software and firmware... Can someone help me on that? I need the newest firmware for the samsung galaxy ace s5830, netherlands version. Or maybe a custom rom which is the most used and stable version. I would like to exclude software reasons, so it might be a hardware problem. But i think it's a software fault cause of the different roms i tried on the phone.
Click to expand...
Click to collapse
It's very strange.. here it is Netherland's fws, try flashing your device if you want, but I've never heard that strange problem xD
http://www.sammobile.com/firmwares/1/?model=GT-S5830&pcode=XEN#firmware
Always when you'll change your custom rom do the 3 wipes to leave your device as clean as possible

Thanks for your fast reply! I did this firmware already yesterday and also wiped dat and cache + recovery... The problem keops showing up I will try this same firmware again and let you know if there are changes or not.

Viper The Ripper said:
It's very strange.. here it is Netherland's fws, try flashing your device if you want, but I've never heard that strange problem xD
http://www.sammobile.com/firmwares/1/?model=GT-S5830&pcode=XEN#firmware
Always when you'll change your custom rom do the 3 wipes to leave your device as clean as possible
Click to expand...
Click to collapse
Soldaatt said:
Thanks for your fast reply! I did this firmware already yesterday and also wiped dat and cache + recovery... The problem keops showing up I will try this same firmware again and let you know if there are changes or not.
Click to expand...
Click to collapse
You can also flash whatever fw you want from EUROPE, because your device is unlocked in order to check your sim's trouble

Viper The Ripper said:
You can also flash whatever fw you want from EUROPE, because your device is unlocked in order to check your sim's trouble
Click to expand...
Click to collapse
Again flashed the original firmware to my Ace. Wiped data and cleared cache. Everything works..... Except... the simcard. Can't call, can't sms and can't make an internet connection. So, still the same problem. The sim works well in another phone, and another simcard in the Ace gives also "Emergency call only". So it HAS to be something with my phone. Someone any idea's i can try / check now i'm very sure it's a phone problem with original new flashed firmware? I hope it's not an hardware defect......... how can i check?
UPDATE: The only simcard which works well is a T-Mobile prepaid simcard. All other simcards sometimes shows up, but most of the time not. The more strange fact is today: I went to another city and was able to call and sms the whole day. But no internet. When i came home, i received again the message: emergency only. This is so strange and makes me very sad. The phone is simlockfree, WHAT COULD IT BE So strange............

Tomorrow i had internet connection, could call and sms. My provider was shown on the screen and nothing wrong. But unfortunately just for a few minutes... No stable connection.

Someone any idea? :crying:

I too faced this problem once.....What I did is that I just formatted the system , wiped data , cache , sd ext and dalvik cache and then restored a backup of my earlier ROM in which the Sim was working ! And it was fixed....
Sent from my GT-P3100 using xda premium

Thanks for your reply! I did your trick but unfortunately... It did'nt help. Very interesting thing is, while i'm traveling around there is no problem, but as soon as i stop driving and walk around, the problems are back. Someone any idea on this strange problem? :crying:

cant access sim
until now this is problem...
why they cant fix this important setting
better to back to stock rom.
is does all are working
yeah CM's are good but still
many bugs and error
like this one.
not STK, sim contact save
and show in contact app
i hope they fix this one asap

You dont have any choice other than visiting the service centre. Yes they may charge you a good amount but seems none of the methods are working.
Also try contacting your service provider maybe thay know the exact reason.
Sent from my GT-S5830 using xda app-developers app

No sim card error without sim card, no IMEI

I just got a used AT&T Vivid with what turns out are 2 anomalies that I failed to observe initially.
First I tried to put my ST sim card out my AT&T SGS, and get no service. No big shock initially since I have to change the APN info. Couldn't do that cause option is dimmed.Checked further, No IMEI, IMEI SV, or baseband. Took sim out and observed that I get NO sim error at startup, just "no service". Tried an AT&T sim from a friends Vivid, same result.
I was hoping that the sim card reader just might be bad, a cheap easy fix and apparently some what of a common issue. Haven't ordered one yet until I get more info on whether the no sim error and no IMEI etc are related and it's not a more serious hardware issue. I don't have a problem with repairing hardware if needed.I'm a noob here, but have a brain like a sponge, so any thoughts on how to proceed with diagnostics would be appreciated. Thanks in advance

No imei is really bad...
No one here can help you recover it without a proper backup... I have no idea how to back it up nor restore...
If you don't figure it out I'd have to suggest flashing to stock... prolly via ruu and go to an at&t store...
Sent from my Vivid 4G using Tapatalk 2

I don't think (but don't know 4 sure) that this phone is anything other than an out of the box stock configuration. I don't have service with AT&T so I don't know how much help they would be. I did check with them to make sure IMEI printed on the phone wasn't blacklisted and it's OK. All I have done was to do a factory reset to clear all the PO's stuff.

Does anybody have any more ideas? I am wondering if I don't need to replace the motherboard and or just the simcard/sd part. Changing the motherboard would mean a different IMEI right?

No imei means something went wrong with the bootloader. It's unlocked? Did you try to S-OFF?
I believe flashing a rom stock via RUU (that's it, flashing the PD.zip file) maybe can fix the problem.
At worst you must change the motherboard and yes, you will have a diferent imei.

I may be wrong, but I see no sign that anybody has done anything to change ROM or anything else on this phone. I'll try to do a S-off, and unlock it since I want to use it on ST anyway.

hello,
i've also same problem here
flashed with stock rom but no luck ,
bootloader locked and s-off
searched forum but no success story
i think i'll return it

Well I finally got a new SIM/SD card reader and installed it. No change.Tried ST, AT&T, and T-mobile sims
Still get no SIM error when booting with or without a SIM card, has an X on signal strength, and it doesn't even say "no service".
Same as to IMEI etc. info, nothing shows up.
Am I going to have to change mainboard? Or is it possible firmware/ROM changes could fix it?

javierarenas said:
No imei means something went wrong with the bootloader. It's unlocked? Did you try to S-OFF?
I believe flashing a rom stock via RUU (that's it, flashing the PD.zip file) maybe can fix the problem.
At worst you must change the motherboard and yes, you will have a diferent imei.
Click to expand...
Click to collapse
Unlocked the bootloader tonight, no problem. Will try s-off tomorrow.
Where can I get a stock rom file?
I'll only ask this dumb ? once: Is the OS (JB,GB,ICS) different than the rom? I'm still running gingerbread 2.3.4, should I got to ICS or? Will that have any affect on the imei issue?
I might just be getting some experience with this phone if I have to do it all over with another mainboard.

OK, so I decided to play with this phone again after my SGS1 was freaking out yesterday. I finally found and used a phone dialer code do download the ICS update, and it downloaded (via wi-fi), installed and rebooted fine. In fact It apparently fixed my IMEI and SIM card problems because when it booted the first time with ICS it showed a big icon "no SIM installed" ya hoo!! checked IMEI in settings, all was good. Played around with settings/menus a bit to familiarize myself with the differences, then restarted...NO IMEI again, and no sim error without any SIM installed On the next 5-6 restarts it worked fine all but once, (total on time of around an hour) but now every restart (10+) it's back to same original issue: no IMEI shown and no SIM error. I still have no AT&T compatible SIM card to really test it but if it doesn't give me a SIM card error (no SIM card installed) it's a moot point.
It really puzzles me that it appeared to work at all if I have a bad mainboard. My daughter in-law has a Vivid with a bad screen she's going to give me to use for parts (mainboard) but I'm not sure if there's not still some hope of salvaging the current one.
Comment, thoughts etc... Please

[Q] Invalid SIM card error/SIM network unlock PIN request on boot I9305

Okay, I posted this question in the I9300 Q&A section by accident (was a bit distraught, didn't read the section title properly), but for some reason a mod appears to have deleted the thread instead of moving it, so here it is again in the correct section.
So after using my I9305 for about 8-9 months now, I woke up this morning to find my phone nonoperational. The phone requests on boot a "SIM network unlock PIN". If this window is dismissed, the pulldown notifications drawer states "Invalid SIM card" with subtitle "Network locked SIM card inserted". Quick Googling reveals that these notifications and errors typically show that a phone is locked to a specific carrier. Now that's understandable, but this phone is unlocked, and I hadn't even taken the SIM card out until this error occurred. The SIM card works just fine in another phone.
I've tried rebooting the phone (first port of call), and using the code *#197328640# in the dialer to SIM unlock as per this post (but I didn't have "[4] NW LOCK NV Data INNITIALLIZ" as an option). I tried using "busybox chown 1001:1001 /efs/nv_data.bin" in terminal emulator as root, after seeing this post, but it came with an error of "chown: /efs/nv_data.bin: NO such file or directory". So... how bad do things look? And no... I don't have a backup of my efs. =[
Click to expand...
Click to collapse
Since then, I also tried *#06# in the dialer, and my IMEI is intact.

Try another sim first

JJEgan said:
Try another sim first
Click to expand...
Click to collapse
Nope, no dice.

Are you totally stock rom or custom?

Stock standard 4.1.2, with CF-Auto-Root.

KayDat said:
Stock standard 4.1.2, with CF-Auto-Root.
Click to expand...
Click to collapse
Maybe try flash a stock pre-rooted rom by lriquidperfection with odin and try the *# again?

Tried various different stock ROMs and factory resets, nothing.

You need to flash a 4.1.1 ROM, or at least a modem from such a ROM.
Sent from my GT-I9305 using xda app-developers app

Tried flashing several 4.1.1 stock ROMs, no luck either.

try to clean pin battery (on the battery not connector battery on the phone) and clean your sim card (used pencil eraser)
look your sim card have missing gold pin/gold line or not?

hrcell said:
try to clean pin battery (on the battery not connector battery on the phone) and clean your sim card (used pencil eraser)
look your sim card have missing gold pin/gold line or not?
Click to expand...
Click to collapse
Not sure why doing anything with the battery would be in any way related with the SIM. I also forgot to mention that I had already tried cleaning the SIM card at the start with alcohol. In any case, the SIM card works fine in another phone, so it appears that there isn't problem with the SIM card. In any case, I managed to RMA the phone, now the long wait to get it back...

KayDat said:
Not sure why doing anything with the battery would be in any way related with the SIM. I also forgot to mention that I had already tried cleaning the SIM card at the start with alcohol. In any case, the SIM card works fine in another phone, so it appears that there isn't problem with the SIM card. In any case, I managed to RMA the phone, now the long wait to get it back...
Click to expand...
Click to collapse
sim connector need voltage and get from battery

You're kidding me, right?

KayDat said:
You're kidding me, right?
Click to expand...
Click to collapse
i not joke with you
i have same problem with you 5 month ago with copy battery

Got my phone back from the shop today. Kept an eye on the shipping tracking when I sent it out, and they sent it back out half a day after they took delivery, so I'm guessing they used a SIM unlock code since it's definitely my phone that I got back. Didn't have to pay anything, so I'm happy. Still not sure why/how the phone decided to lock itself though...

want to change network band in sm j110h
Hello sir...
I want change my phone network band.i had used code *#0011# it was showing only sevice mode.im not getting main menu option after tried further process. Plz help me to change my WCDM network to LTE network mode.
Thanks in advance
Prashant

KayDat said:
The phone requests on boot a "SIM network unlock PIN". If this window is dismissed, the pulldown notifications drawer states "Invalid SIM card" with subtitle "Network locked SIM card inserted".
Click to expand...
Click to collapse
I had the same problem. In my case the phone had been fine for almost 3 years.

I suddenly have this problem too.

whatsupskip said:
I had the same problem. In my case the phone had been fine for almost 3 years.
Click to expand...
Click to collapse
Which ROM are you using? I was using rodman's AICP

Deanodirector said:
Which ROM are you using? I was using rodman's AICP
Click to expand...
Click to collapse
I was using the stock Samsung ROM.

No service, no imei, no baseband after rebooting

I just got an old htc ph39100 and it met some troubles like this. After rebooting, it usually lost imei and baseband so my phone has no service. But if I try to reboot many times, finally it has service and Imei and baseband too. But if I turn off or restart my device, it has same troubles again.
I tried to flash RUU file to come back stock rom but it doesn't solve the problem
So anyone can help me to fix this?

kulomo said:
I just got an old htc ph39100 and it met some troubles like this. After rebooting, it usually lost imei and baseband so my phone has no service. But if I try to reboot many times, finally it has service and Imei and baseband too. But if I turn off or restart my device, it has same troubles again.
I tried to flash RUU file to come back stock rom but it doesn't solve the problem
So anyone can help me to fix this?
Click to expand...
Click to collapse
Check your Sim card slot... Make sure your card fits tight... Maybe push down on the metal that the Sim card rides in

rignfool said:
Check your Sim card slot... Make sure your card fits tight... Maybe push down on the metal that the Sim card rides in
Click to expand...
Click to collapse
I checked a lot of times but no luck. I just wondering if it's sim card slot problem, so why my device doesn't recognize IMEI, baseband? After many many times try to reboot, some how it have service again and IMEI and baseband appear. But all of them were lost after rebooting.

kulomo said:
I checked a lot of times but no luck. I just wondering if it's sim card slot problem, so why my device doesn't recognize IMEI, baseband? After many many times try to reboot, some how it have service again and IMEI and baseband appear. But all of them were lost after rebooting.
Click to expand...
Click to collapse
SIM stands for Subscriber Identity Module....
If the information you are talking about is missing... Its usually because the gold contact on the card isn't making a connections to the gold pins in your phone... Especially when its intermittent...
Try this...
Take the back cover off the phone with the power off... Push down LIGHTLY on your SIM slot and hold it... Then push power... If the slot is under the battery... Try a little shim under the battery on top of the SIM slot... We are just trying to push down on the card a little...