Database Users

[Q] Samsung Galaxy S4 i9500 suddenly lost signal, imei, baseband, etc.

My i9500 has driven my crazy since yesterday, I even stayed up all night trying to find a way to restoring its IMEI. So here's the problem:
I was playing a game called "Friendly Fire" and decided to turn off its notifications using Application Manager. Everything was fine until a few hours later when I opened up my phone and saw the mobile signal was gone, only a circle with the diagonal dash inside it left. At that time I thought it was fine but then suddenly it popped up the message "Please enter SIM card unlock number" or sth like that, which was an error indeed because my i9500 is an unlocked version. I though it was the mobile network who locked the SIM, but when I tried putting the SIM into other phones, they all worked! And so I started to find a way to unlock my i9500 by ServiceMode Menu but I could never reach the ServiceMode Menu, it only showed a blank screen. I checked my IMEI and it now said "null/null". I had never rooted or flashed any ROM on it so it was really really strange. So I reached a topic on "how to solve the null/null IMEI" on i9500 because it seemed that many people got this problem. However, nothing helped I even rooted my phone to see whether I can back up then restore the 'efs' folder. Well, I did manage to do so but the IMEI would not change at all. The strange thing is that when the phone was just booted up, if I enter *#06# the IMEI shows "null/null", but if I enter *#1234# first then *#06# it shows the generic IMEI (0049...), which was useless as well. I tried different methods, flashing to different official stock rom, but nothing worked. Also, when I flashed an official stock rom, Kies did not show the right region of the firmware but "XXX" for every firmware I tried. And of course, my mobile signal was lost so I could not make any call/text/3G/LTE/etc., but the rest (wifi, bluetooth, gaming, etc.) was okay, it is basically an ipod touch right now
I wonder if anyone can help me with my problem? I know my real IMEI number (at the back of the phone) and that's it. I bought it from another country so it would not be possible for me to bring it to the Samsung store where I got it from. I could not remember the country where its first firmware came from Is there any way to find out that?
Many thanks for reading my trouble :crying:

Well this weird, I am wondering if an android virus could do that....
Sent from my GT-I9505 using XDA Premium 4 mobile app

Strange!!!! Is it original or china copy??
Sent from my GT-I9500 using Tapatalk 4

Black_Lion said:
Strange!!!! Is it original or china copy??
Click to expand...
Click to collapse
I bought it in the U.S. in July, from an official Samsung store. Well, the box containing the phone and the phone itself were "made in China", I thought most products have those words? It would be ridiculous if that is the problem because it also has a line like "Korean product"...
I wonder if Octopusbox or SPTbox may fix the problem? I don't know those two things very well though.

I had the same problem on a different samsung phone (Note 2) and i was getting imei 0049 or something like that, Basically my imei had changed or gone. The issue i found out to be a baseband issue so what i had done was downloaded a few compatible basebands and flashed them via odin and eventually got my imei back. There is also this link for you to have a look at http://forum.cyanogenmod.com/topic/77400-booting-issues-and-imei-loose/ just in case it helps. Hope you get sorted.

solve problem
According to your description， you can have a try resert your Samsung galaxy s 4 and then restart it to see weather it is OK? If it still not fine, send it to Samsung After-sales service

[Q] i9505 cannot register on network

Ok so here's my problem.
I have an I9505 previously with a GE custom ROM and modem version XXUEML2, everything was working fine so far, the only "strange" thing was whenever I reboot the device the Cell Network will take about 3 minutes to reconnect, and I constantly lost the 4g connection which I attributed to problems within my carrier.
So a couple days ago I re-installed my custom ROM (was having problems with the Kernel) and after it boot back I wait to my Cell Network to connect, which never happen. So I went ahead, format everything, re-install the custom ROM and no luck.
I tried everything, updating the Baseband to XXUEML6. Install the Stock ROM (which was locked, but the store where I get it unlocked it by warranty), install another Stock ROM (right now I have the I9505XXUFNC4_I9505PHNFNC1_PHN ROM) and I still cannot get signal).
Did my modem just died, or the "warranty" guys unlock my device in a wrong method. I don't think is a problem with my IMEI 'cause I still have the same as the dive box says.
Hope someone can guide me before I take it back. Thanks.

vicmns said:
Ok so here's my problem.
I have an I9505 previously with a GE custom ROM and modem version XXUEML2, everything was working fine so far, the only "strange" thing was whenever I reboot the device the Cell Network will take about 3 minutes to reconnect, and I constantly lost the 4g connection which I attributed to problems within my carrier.
So a couple days ago I re-installed my custom ROM (was having problems with the Kernel) and after it boot back I wait to my Cell Network to connect, which never happen. So I went ahead, format everything, re-install the custom ROM and no luck.
I tried everything, updating the Baseband to XXUEML6. Install the Stock ROM (which was locked, but the store where I get it unlocked it by warranty), install another Stock ROM (right now I have the I9505XXUFNC4_I9505PHNFNC1_PHN ROM) and I still cannot get signal).
Did my modem just died, or the "warranty" guys unlock my device in a wrong method. I don't think is a problem with my IMEI 'cause I still have the same as the dive box says.
Hope someone can guide me before I take it back. Thanks.
Click to expand...
Click to collapse
Hi .
I guess that you checked your setting , data is enable , network mode.....and if your APN settings were correct

MAX 404 said:
Hi .
I guess that you checked your setting , data is enable , network mode.....and if your APN settings were correct
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Yeah, already check that, but the problem is that I cannot even make phone calls.

vicmns said:
Yeah, already check that, but the problem is that I cannot even make phone calls.
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Click to collapse
I am a little lost with the unlocking thing, why you had to unlock your phone ? it was from a different carrier ? once is unlocked it remains unlocked ..what method he used ?

MAX 404 said:
I am a little lost with the unlocking thing, why you had to unlock your phone ? it was from a different carrier ? once is unlocked it remains unlocked ..what method he used ?
Click to expand...
Click to collapse
Well, when I bought the device, it was intended to be unlocked, but for a strange reason my device (only mine 'cause we bought 2 the same day) came carrier locked (MEO from Portugal) So I sent it back to warranty. After a week I get my device back "unlocked" (Same ROM, IMEI) but I notice that it was rooted, which only makes me think that they take it to a third party which unlocked the cellphone with a method that required root. I didn't care, I had signal and 3G,
The problems of buying stuff online...

vicmns said:
Well, when I bought the device, it was intended to be unlocked, but for a strange reason my device (only mine 'cause we bought 2 the same day) came carrier locked (MEO from Portugal) So I sent it back to warranty. After a week I get my device back "unlocked" (Same ROM, IMEI) but I notice that it was rooted, which only makes me think that they take it to a third party which unlocked the cellphone with a method that required root. I didn't care, I had signal and 3G,
The problems of buying stuff online...
Click to expand...
Click to collapse
There use to be possible using this guide, with the old firmwares as far as i know is not possible anymore unless you still have that firmware
http://forum.xda-developers.com/showthread.php?t=2282683
The other way is by an unlocking code ( you can buy in many places) once is unlock , stays unlock..no matter what you flash
Try something go Settings/connections / More networks/Mobile networks/ network Operator/ choose your carrier and see if it let you register, try others and see what kind of message you get

MAX 404 said:
There use to be possible using this guide, with the old firmwares as far as i know is not possible anymore unless you still have that firmware
http://forum.xda-developers.com/showthread.php?t=2282683
The other way is by an unlocking code ( you can buy in many places) once is unlock , stays unlock..no matter what you flash
Try something go Settings/connections / More networks/Mobile networks/ network Operator/ choose your carrier and see if it let you register, try others and see what kind of message you get
Click to expand...
Click to collapse
Already tried to choose my carrier, but sometimes it doesn't even appear, and when it does, connecting to it just throws and error saying "Not Registered On Network".
What I fear is that somehow they unlocked it using the Ariza patch (or other unlock method) which should not be used.
Also after digging some info, that kind of error happens when the device have been IMEI locked, which could be also a possibility given that my SIM works on any other device, but not otherwise. I will have to give a call to support service to discard this theory.

vicmns said:
Already tried to choose my carrier, but sometimes it doesn't even appear, and when it does, connecting to it just throws and error saying "Not Registered On Network".
What I fear is that somehow they unlocked it using the Ariza patch (or other unlock method) which should not be used.
Also after digging some info, that kind of error happens when the device have been IMEI locked, which could be also a possibility given that my SIM works on any other device, but not otherwise. I will have to give a call to support service to discard this theory.
Click to expand...
Click to collapse
Hi ,
I also feel the same that is the problem , it has not been unlock right.
check with them , let me know what they tell you.

Ok, I have more information, typing on the dial *#0011# to get the Service Mode Menu, it says at the bottom IMEI CERTI: NA. But if y dial *#06# I get my correct IMEI, is something wrong with the EFS folder?

vicmns said:
Ok, I have more information, typing on the dial *#0011# to get the Service Mode Menu, it says at the bottom IMEI CERTI: NA. But if y dial *#06# I get my correct IMEI, is something wrong with the EFS folder?
Click to expand...
Click to collapse
Hi ,
Just cheked mine , it said PASS
For sure something happen when unblocking the phone

[Q] Sim card problem

Hello,
I bought my Note 3 mobile and decided to flash C-Rom!
At the morning of one day I flashed the rom successfully. Later I installed all apps I wanted. I have my phone rebooted a lot of times with no problem. Some time at the afternoon of the same day I pick up the phone to stare at it! I activated the LTE option and deactivate it again. This was not the first time of doing it! After that the network signal was missing! I rebooted the phone, but it doesn't ask me for a PIN any more. I used my sim at another phone and it asked for a PIN. I used another SIM at my phone but it didn't ask for a PIN.
After dialing *#06# at Dialer a popup dialog shows up. The title of this dialog is MEID and the content is B0000000!
At settings>About phone>Status> the MEID is full of zeroes but the IMEI seems OK.
At the same screen i see the following:
Network - Searcing for Service
Mobile network type - Unknown
Mobile netwok state - Disconected
Service state - Out of service
My phone number - Unknown
MIN - Unknown
PRL version - Uknown
ICCID - Unknown
Thanks everyone in advance

Very strange.... without doing anything like flashing stock or modem?????

TheLiTTle said:
Hello,
I bought my Note 3 mobile and decided to flash C-Rom!
At the morning of one day I flashed the rom successfully. Later I installed all apps I wanted. I have my phone rebooted a lot of times with no problem. Some time at the afternoon of the same day I pick up the phone to stare at it! I activated the LTE option and deactivate it again. This was not the first time of doing it! After that the network signal was missing! I rebooted the phone, but it doesn't ask me for a PIN any more. I used my sim at another phone and it asked for a PIN. I used another SIM at my phone but it didn't ask for a PIN.
After dialing *#06# at Dialer a popup dialog shows up. The title of this dialog is MEID and the content is B0000000!
At settings>About phone>Status> the MEID is full of zeroes but the IMEI seems OK.
At the same screen i see the following:
Network - Searcing for Service
Mobile network type - Unknown
Mobile netwok state - Disconected
Service state - Out of service
My phone number - Unknown
MIN - Unknown
PRL version - Uknown
ICCID - Unknown
Thanks everyone in advance
Click to expand...
Click to collapse
The reason is unknown but it seems like your phone lost a valid IMEI/baseband.
Can you check the Baseband version?
Try to flash the stock firmware, or flash the baseband for your device.

The problem suddenly appeared and that's what makes me feel uncomfortable. The baseband number is N9005XXUENC2. I will try to flash whole firmware, but does anyone know how can I flash only the baseband? I don't want to stay with the original ROM!

TheLiTTle said:
The problem suddenly appeared and that's what makes me feel uncomfortable. The baseband number is N9005XXUENC2. I will try to flash whole firmware, but does anyone know how can I flash only the baseband? I don't want to stay with the original ROM!
Click to expand...
Click to collapse
Extract modem.bin and NON-HLOS.BIN files from the stock firmware, and flash via Odin.
Sent from my SM-N9005 using Tapatalk

It is my first Samsung. Could you be more specific? How can I extract those? Can you guide me through?

TheLiTTle said:
It is my first Samsung. Could you be more specific? How can I extract those? Can you guide me through?
Click to expand...
Click to collapse
Do you have the stock firmware file already?
Sent from my SM-N9005 using Tapatalk

Finally I was able to solve the problem. It is a problem with C-Rom and 4g option. I am going to write a new reply by tomorrow and also to the forum. I appreciate the help guys.
Thanks a lot

The problem is with the LTE activation/deactivation.
I am from Greece with COSMOTE provider. Here, in Greece, at the moment we have to pay an extra fee to the provider in order to have the option of using 4g. The steps as I believe are the following:
1). I am not paying this fee at the moment so I am not able to use 4g.
2). I activate 4g and immediately I deactivated it. I did not want to open it, just touching the selection at the notifications. This option is at the notifications when you slide down the notification bar using 2 fingers.
3). Then the signal goes off and I had to re-flash stock rom once again before flashing the custom rom. The problem has to do only with the signal and everything else works as charm in the C-ROM.
The C-ROM version which has this problem is this C-RoM-KK-v7.1-20140622-hlte.zip

[Q] Samsung Galaxy s 4 issue with mobile data

recently my samsung galaxy s 4 on the carrier US Cellular and running the stock android version 4.4.2 has stopped communicating with 4g lte. It will show that there is a 4 g lte connection but will not connect to facebook messanger or do anything internet related. It will occasionally drop to 3g and work fine or drop connection all together.
In my attempts and large amount of research to fix this problem i have done the following:
1. Turned on and off airplane mode
2 restarted the phone
3. Replaced SIM card with a new one
4. Factory reset my phone
5. Erased application cache in the recovery mode
6. I have also tried to change the network mode and yes mobile data is turned on.
Please help. Us cellular is just telling me to buy a new phone that i cant afford because they dont know whats wrong and samsung is saying the same thing. ***Also it is not a rooted phone*****

Dial *#1234# and tell me what appears with details pls.

I attempted to type that in and nothing happens. I have tried other codes as well and same result.

Install Phone Info from the Play Store and run it. Tell us the AP, CP, and CSC of the phone.

vulkner2 said:
I attempted to type that in and nothing happens. I have tried other codes as well and same result.
Click to expand...
Click to collapse
The original samsung firmware doesn't seem to recognize some of those USSD codes. That's why nothing happens.

@GDReaper: *#1234# is one of the codes that does work in the Samsung dialer. US Cellular has blocked access to that information, which is why it's not working for him.

GDReaper said:
The original samsung firmware doesn't seem to recognize some of those USSD codes. That's why nothing happens.
Click to expand...
Click to collapse
Ok do you any idea why i am having these issues

Strephon Alkhalikoi said:
Install Phone Info from the Play Store and run it. Tell us the AP, CP, and CSC of the phone.
Click to expand...
Click to collapse
I have attached screen shots of the information of my phone from that app.

vulkner2 said:
I have attached screen shots of the information of my phone from that app.
Click to expand...
Click to collapse
Try to update to the latest firmware for your device via OTA or via ODIN: HERE.

Joku1981 said:
Try to update to the latest firmware for your device via OTA or via ODIN: ].
Click to expand...
Click to collapse
I have updated my phones firmware and the issue still remains. Both US cellular and Samsung have absolutely no idea whats causing the issue. I have also atempted to root with Kingo Root and it fails.

Galaxy Note 4 SM-N910F Invalid SIM

I had been looking at this phone for a while on ebay and despite well... ebay... I had temporary lapse of good judgement and maybe a bit of alcohol and pulled the trigger.
I got the phone thinking it was a SM-N910F, everything I'd read said it would work on US AT&T sans some bands for LTE.
The phone came and it was in good condition. The box and the serial label behind the battery all say SM-N910F.
I turned the phone on, it has a beautiful screen, everything seems to work fine, works with wifi no problems, so far so good.
I turned it off, popped in my ATT SIM and turned back on and, uh oh, got an invalid SIM error.
Ok so next step, I go to the ATT store, they check the IMEI and confirm that yes it will work on their network and they give me a new SIM for good measure. Their new SIM still shows invalid in the phone and the sales guy is confused but then I tell him I got the phone off ebay and he gives me a look of pity. No problem though I wanted the international phone so I could learn about flashing ROMs and such without leaving me with a non-working brick and no communications device.
So I read through XDA posts and various tutorials over the web and try to find out why it's not accepting my SIM.
I flash TWRP, and root the phone, that worked fine.
Then I decide that maybe upgrading the firmware to Lollipop and flashing a new ROM might fix the problem. I go to Sammobile, download N910FXXU1BOB4_N910FOXA1BOB4_DBT because that seemed like a good one that would work. Then try flashing it via ODIN.
ODIN Fails, SECURE_CHECK_FAIL : aboot. Some more reading later I find out that usually happens because you're trying to flash the wrong thing.
So I dig further. I can still get into the stock kitkat software on the phone so I download *Samsung* Phone Info and check out what I've currently got on the phone, but now I'm totally confused because I don't know what to make of it and this is where I need some help.
I've got screenshots but due to being new I can't post a link, I can email them if they'll help.
Settings > Device Info shows SM-N910F with baseband of N910FXXU1ANK4... that looks right
but then I fire up Phone Info and it shows a phone model of SM-N910P which would be a Sprint CDMA phone? and a country CSC of CHN?
so this phone is truly international
European phone, Chinese CSC, with USA Sprint firmware?
Where do I even begin, can anyone suggest what I can do to untangle the mess?

Have you check the box "OEM unlocking" in the developer options menu? This allowed me to use Odin the first time on my tmobile note 4.
If you don't have a developer options menu in your settings, go to about device and press build number 7 times until it tells you you are now a developer.

try a European version BTU from sam i have the same model SM-N910F root is an issue i'm looking at.
as the SM-N910F is Euro i would use that firmware.
Hope it helps.