Database Users

G900f Network problem Please HELP !!

Hi ,
I have galaxy s5 g900f and I have a problem with 3G network my mobile network is so weak that I go into the house and there is no 3G network only 2G network and It's so slow. all mobile devices in my area have a perfect 3G network with the same network provider . I tried my sim card on another samsung device and it worked perfectly. I've tried everything , I've changed my rom but nothing happened . I've tried the factory reset but also nothing.I also changed my sim card but the same problem happened.
Please help me.

You may want to flash another baseband version

vndnguyen said:
You may want to flash another baseband version
Click to expand...
Click to collapse
how can ido this ?

geo5896rge said:
how can ido this ?
Click to expand...
Click to collapse
To flash another baseband:
- Download the appropriate firmware. You can install Phone INFO ★Samsung★ app, go to the menu 'Firmware Browser' and get the appropriate firmware.
- Extract and get 2 files: modem.bin + NON-HLOS.bin.
- For detailed instruction how to update the baseband, please refer to this thread: http://forum.xda-developers.com/not...900tuvudnf4-extracted-stock-firmware-t2834398

vndnguyen said:
To flash another baseband:
- Download the appropriate firmware. You can install Phone INFO ★Samsung★ app, go to the menu 'Firmware Browser' and get the appropriate firmware.
- Extract and get 2 files: modem.bin + NON-HLOS.bin.
- For detailed instruction how to update the baseband, please refer to this thread: http://forum.xda-developers.com/not...900tuvudnf4-extracted-stock-firmware-t2834398
Click to expand...
Click to collapse
it didn't work

geo5896rge said:
it didn't work
Click to expand...
Click to collapse
What does that mean? You cannot flash another baseband? Or you have successfully flashed another baseband but the problem persists?
Please check the following and see what option is selected?
1- Open Settings > More networks > Mobile networks > Network mode ?
2- Open Dialer > enter *#2263# ?
3- Open Testing Menu > Device information > Set preferred network type ?

vndnguyen said:
What does that mean? You cannot flash another baseband? Or you have successfully flashed another baseband but the problem persists?
Please check the following and see what option is selected?
1- Open Settings > More networks > Mobile networks > Network mode ?
2- Open Dialer > enter *#2263# ?
3- Open Testing Menu > Device information > Set preferred network type ?
Click to expand...
Click to collapse
I have successfully flashed another baseband but the problem persists.
the network mode is wcdma only . I want the 3g network only.
*#2263# this code didn't open anything.

geo5896rge said:
I have successfully flashed another baseband but the problem persists.
the network mode is wcdma only . I want the 3g network only.
*#2263# this code didn't open anything.
Click to expand...
Click to collapse
In fact 3g and wcdma are referred to the same thing.
- Is your phone root? If so, open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > scroll to 2263 and tap 'Launch 0' to launch the code.
- Did you try the Step #3 I've said above?

vndnguyen said:
In fact 3g and wcdma are referred to the same thing.
- Is your phone root? If so, open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > scroll to 2263 and tap 'Launch 0' to launch the code.
- Did you try the Step #3 I've said above?
Click to expand...
Click to collapse
my phone isn't rooted.
how to open testing menu ?

geo5896rge said:
my phone isn't rooted.
how to open testing menu ?
Click to expand...
Click to collapse
Testing menu is *#*#4636#*#* on every Android phones.
On Samsung phones this code has been disable, so you have to open it by another way.
Install Shortcut Master app > Menu > Search... > enter 'testingsettings' in the textbox and tap Search.
Finally tap on the search result to launch it.
You can also create a shortcut for it for later access easier.

[Q]Not Registered on network SM-900F

So i changed my old phone (S2) with new S5, No matter what i try to do i keep getting "Not Registered on network",I tried to install a different rom,
tried to enter manually the "Access Point Names", Tried to use the "Network operators" still nothing,The IMEI is fine... The SIM card works fine on my S2... Any ideas?..

It's stuck on the network.......?
From what I remember, s2 is normal sim and s5 microsim
How do you use?
Trimis de pe al meu SM-G900F folosind Tapatalk

xIced said:
So i changed my old phone (S2) with new S5, No matter what i try to do i keep getting "Not Registered on network",I tried to install a different rom,
tried to enter manually the "Access Point Names", Tried to use the "Network operators" still nothing,The IMEI is fine... The SIM card works fine on my S2... Any ideas?..
Click to expand...
Click to collapse
Access Point Names is only needed for data connection. It is not required to register on mobile network.
- Please check if you have a valid Baseband?
- Make sure your network settings is set to Auto Mode.

vndnguyen said:
Access Point Names is only needed for data connection. It is not required to register on mobile network.
- Please check if you have a valid Baseband?
- Make sure your network settings is set to Auto Mode.[/QUOTE
Click to expand...
Click to collapse

xIced said:
Attachment
Click to expand...
Click to collapse
What does it say in the notification bar with the /!\ (exclamation) icon?
may be your phone is locked? or the imei is blacklisted?
---------- Post added at 03:27 PM ---------- Previous post was at 03:26 PM ----------
And also open the Dialer and enter *#0011# and post the screenshot?

vndnguyen said:
What does it say in the notification bar with the /!\ (exclamation) icon?
may be your phone is locked? or the imei is blacklisted?
---------- Post added at 03:27 PM ---------- Previous post was at 03:26 PM ----------
And also open the Dialer and enter *#0011# and post the screenshot?
Click to expand...
Click to collapse
It says "No service Selected network (012 Mobile) not available"

xIced said:
It says "No service Selected network (012 Mobile) not available"
Click to expand...
Click to collapse
Please check with the secret code *#0011#

vndnguyen said:
Please check with the secret code *#0011#
Click to expand...
Click to collapse
Here you go.

Dont know why the service is limited.
Can you insert another sim into this phone to see if it works?

vndnguyen said:
Dont know why the service is limited.
Can you insert another sim into this phone to see if it works?
Click to expand...
Click to collapse
Same thing..

Any ideas guys?...

xIced said:
Same thing..
Click to expand...
Click to collapse
- May be your phone has been blacklisted by the network?
- Got a question, how did you get these 3 screen in the attachment?

vndnguyen said:
- May be your phone has been blacklisted by the network?
- Got a question, how did you get these 3 screen in the attachment?
Click to expand...
Click to collapse
Is there any way to unlock the phone? If he's blacklisted as you say.
*#0011#>Back>Key input (Q0)>Protocol State>Sim Inforamtion

xIced said:
Is there any way to unlock the phone? If he's blacklisted as you say.
*#0011#>Back>Key input (Q0)>Protocol State>Sim Inforamtion
Click to expand...
Click to collapse
Ok thanks, I have seen these screens before but I forgot completely.
You can change to another network. If the blacklist was broadcasted over all networks in your country so the only option for you is selling it oversea.
While you are in the MAIN MENU screen, can you select DEBUG SCREEN > NAS INFORMATION > MM INFORMATION and show the info?

vndnguyen said:
Ok thanks, I have seen these screens before but I forgot completely.
You can change to another network. If the blacklist was broadcasted over all networks in your country so the only option for you is selling it oversea.
While you are in the MAIN MENU screen, can you select DEBUG SCREEN > NAS INFORMATION > MM INFORMATION and show the info?
Click to expand...
Click to collapse
here you go..
Is there and chance I'll be able to unlock him in the future?

xIced said:
here you go..
Is there and chance I'll be able to unlock him in the future?
Click to expand...
Click to collapse
According to the screenshot, the cause of the problem is IMSI (SIM card identity) unknown in HLR (Home Location Register).
That means your SIM card has not been registered (is unknown) in the mobile network.
I don't know why????

vndnguyen said:
According to the screenshot, the cause of the problem is IMSI (SIM card identity) unknown in HLR (Home Location Register).
That means your SIM card has not been registered (is unknown) in the mobile network.
I don't know why????
Click to expand...
Click to collapse
hmmm i tried to use a different sim card

xIced said:
hmmm i tried to use a different sim card
Click to expand...
Click to collapse
Can you show this screen: MAIN MENU > DEBUG SCREEN > NAS INFORMATION > MM REJECT CAUSE ?

vndnguyen said:
Can you show this screen: MAIN MENU > DEBUG SCREEN > NAS INFORMATION > MM REJECT CAUSE ?
Click to expand...
Click to collapse
....

xIced said:
....
Click to expand...
Click to collapse
Hummh, nothing here, may be because you have selected "RESET MM&GMM REJECT List" to clear the history.
According to the previous screenshot, as I've said, the cause of problem is your SIM card has not been registered (is unknown) in your mobile network. However this problem happens with many sim card, and your sim card work fine on the other phone (your S2). It sounds weird...

Note 4 hidden code ????

HI
Does anyone in XDA has discover some hidden codes to access Service Mode ?, I want to change my network mode on SM-N910S to detect GSM and WCDMA but none of the known methods work for me. Using Galaxy Note 4 SK Telecom version

henryvu said:
HI
Does anyone in XDA has discover some hidden codes to access Service Mode ?, I want to change my network mode on SM-N910S to detect GSM and WCDMA but none of the known methods work for me. Using Galaxy Note 4 SK Telecom version
Click to expand...
Click to collapse
If you have root, just open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > scroll down to *#27663368378# for Service Main Menu or *#197328640# for Debug Screen. Tap and select "Launch 0' to launch.
If you don't have root, open Dialer, enter *#0011#, Menu > Back item (not Back key), Menu > Key Input > Q0, wait some seconds...
maybe
download this app scroll to the bottom click additional info then phone information then scroll to the middle of the page on drop down box and try one of the settings im not on a gsm carrier so im not sure which one
https://play.google.com/store/apps/details?id=com.cc.signalinfo&hl=en
or flash a rom
*#0011#
Menu>Back
Menu>Input>Q
Menu>Input>0000 wait some seconds and Hello service menu )
??

Uniquebarbee said:
If you have root, just open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > scroll down to *#27663368378# for Service Main Menu or *#197328640# for Debug Screen. Tap and select "Launch 0' to launch.
If you don't have root, open Dialer, enter *#0011#, Menu > Back item (not Back key), Menu > Key Input > Q0, wait some seconds...
maybe
Click to expand...
Click to collapse
It dont work. I think samsung has changed the way to access that menu

henryvu said:
It dont work. I think samsung has changed the way to access that menu
Click to expand...
Click to collapse
I have T-mobile note 4 (rooted but with stock room) and this method works for me:
*#0011#
Menu>Back
Menu>Input>Q
Menu>Input>0000 wait some seconds and Hello service menu
Make sure you write the letter "q" with capslock on

NirAndroid said:
I have T-mobile note 4 (rooted but with stock room) and this method works for me:
*#0011#
Menu>Back
Menu>Input>Q
Menu>Input>0000 wait some seconds and Hello service menu
Make sure you write the letter "q" with capslock on
Click to expand...
Click to collapse
Hi
It is not gonna work, my phone is Korean Stock. Your trick work with my Note 2 and 3 using HK and Australia stocks
This video will show you how Korean stock phone look like. No known trick work on it
http://youtu.be/CiRPPYa8WWE I shoot a clip showing you how my phone work. Let me know if you cant watch

henryvu said:
Hi
It is not gonna work, my phone is Korean Stock. Your trick work with my Note 2 and 3 using HK and Australia stocks
This video will show you how Korean stock phone look like. No known trick work on it
http://youtu.be/CiRPPYa8WWE I shoot a clip showing you how my phone work. Let me know if you cant watch
Click to expand...
Click to collapse
If that doesn't help, you may need root and use Phone INFO ★Samsung★ app > Menu > 'Secret Codes' to launch the Hidden Service menu.

vndnguyen said:
If that doesn't help, you may need root app > Menu > 'Secret Codes' to launch the Hidden Service menu.
Click to expand...
Click to collapse
Before hand i am very sorry that I bump an old thread however, this pertains to this and i can't find any info on my current issue and following you has got me the farthest along with my problem.
My galaxy note 4 reads no service, so I tried the *#0011# approach (no root) could not find the menu, with the input method
Then I rooted it and used your app and was now able to access the menu.
However I still can not find the run ping test option.
My firmware is version 5.1.1
Model: SM-N910T

lenevans said:
Before hand i am very sorry that I bump an old thread however, this pertains to this and i can't find any info on my current issue and following you has got me the farthest along with my problem.
My galaxy note 4 reads no service, so I tried the *#0011# approach (no root) could not find the menu, with the input method
Then I rooted it and used your app and was now able to access the menu.
However I still can not find the run ping test option.
My firmware is version 5.1.1
Model: SM-N910T
Click to expand...
Click to collapse
"run ping test option", what do you mean?
I have never mentioned it before so I have no idea on it.

vndnguyen said:
"run ping test option", what do you mean?
I have never mentioned it before so I have no idea on it.
Click to expand...
Click to collapse
I am trying to fix it so my phone no longer reads No service, It seems like the fix is to go into service menu and run a ping test from basic info, but thats just what i have read in other forums.

mobile network not available

please help, i have this samsung s5 scl23 from au japan, i had it unlocked or open line, then i used a local sim card and it was working fine, until the software was updated OTA. seems like my sim card is no longer recognized, please see attachments.
http://forum.xda-developers.com/picture.php?albumid=11611&pictureid=46988
http://forum.xda-developers.com/picture.php?albumid=11611&pictureid=46987
http://forum.xda-developers.com/picture.php?albumid=11611&pictureid=46986
http://forum.xda-developers.com/picture.php?albumid=11611&pictureid=46985
http://forum.xda-developers.com/picture.php?albumid=11611&pictureid=46984

Did you try with another sim card?

leyanne1982 said:
please help, i have this samsung s5 scl23 from au japan, i had it unlocked or open line, then i used a local sim card and it was working fine, until the software was updated OTA. seems like my sim card is no longer recognized, please see attachments.
Click to expand...
Click to collapse
According to the screenshots, your baseband and imei appear to be fine. Try the following:
1- To make sure your sim card is fine, put your sim card into another phone to see if it works. Or put another sim card to this phone to see if the problem persists?
2- Please post the following screenshots:
- If you have root, open Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > *#197328640# > 'Launch 0' > BASIC INFORMATION (capture screenshot #1) > Menu - Back > NAS INFORMATION > MM INFORMATION (capture screenshot #2) > Menu - Back > MM REJECT CAUSE (capture screenshot #3).
- If you don't have root, open the dialer > *#0011# (capture screenshot #1) > Menu - Back > Menu - Key Input > Q0 > wait... > DEBUG SCREEN > NAS INFORMATION > MM INFORMATION (capture screenshot #2) > Menu - Back > MM REJECT CAUSE (capture screenshot #3).
And post these 3 screenshots for more investigation.

when i try the dialer, it will always say "mobile network not available", the only thing i can do with the dialer is the *#06#, i have already used different sim cards that always work with other phones but still wont work with my samsung

If those codes do not work on your dialer, no need root for it to work.
Do you have root?

vndnguyen said:
If those codes do not work on your dialer, no need root for it to work.
Do you have root?
Click to expand...
Click to collapse
I'm not really sure.. I think I don't have. I've downloaded an app to check if my phone had a root and it says none

Pls help.. thank you

leyanne1982 said:
Pls help.. thank you
Click to expand...
Click to collapse
hi it look's like your phone is blocked. have alook on ESN http://swappa.com/ you have to sign in hope this help's regard's joe

my phone now is ok. thanks to a man from japan who helped me,

@leyanne1982, So, why don't you share with us what you did?

he had me download a file and odin.. then just set my phone to download mode then when i hit odin after that my phone restarted. then it's ok. i think the file/software or whatever you call it (i dont know much about these, sorry) is specifically for samsung s5 from japan.

I have the same problem, I can share the link?-----tengo el mismo problema, me pueden compartir el link?

leyanne1982 said:
he had me download a file and odin.. then just set my phone to download mode then when i hit odin after that my phone restarted. then it's ok. i think the file/software or whatever you call it (i dont know much about these, sorry) is specifically for samsung s5 from japan.
Click to expand...
Click to collapse
Hi,
Can you please share the file which you downloaded and let us know the steps to do it.

I'm having the same problem on my galaxy s5G900M, will be that someone could help me?

leyanne1982 said:
he had me download a file and odin.. then just set my phone to download mode then when i hit odin after that my phone restarted. then it's ok. i think the file/software or whatever you call it (i dont know much about these, sorry) is specifically for samsung s5 from japan.
Click to expand...
Click to collapse
@leyanne1982 what file did you download ? I have same issue

hi
i have same problem plz help
---------- Post added at 02:55 PM ---------- Previous post was at 02:48 PM ----------
leyanne1982 said:
my phone now is ok. thanks to a man from japan who helped me,
Click to expand...
Click to collapse
can u tell me how he helped u??
plz
i have same problem

leyanne1982 said:
he had me download a file and odin.. then just set my phone to download mode then when i hit odin after that my phone restarted. then it's ok. i think the file/software or whatever you call it (i dont know much about these, sorry) is specifically for samsung s5 from japan.
Click to expand...
Click to collapse
Hi can you please share the file or at least tell us the filename?

leyanne1982 said:
my phone now is ok. thanks to a man from japan who helped me,
Click to expand...
Click to collapse
I have a same problem after i upgraded android from 4.4.2 to 6.0.1. Can you please provide details about file, download link. My phone is samsung galexy s5 scl23(sm-g900j) . Thanks in advance.

Phone Nightmare, i dont know what i have done :(

i just bought the phone yesterday screwed up and ive been working on it for over 15 hours and im hoping someone of expertise can get me out of this issue.
I have a N9005 , SN: RF1D963X6PD
I live in Canada and use Wind Mobile (AWS BANDS) same as tmobile. I bought the phone and insterted my sim and noticed that i would only connect roaming. I then figured out that i had bought a international version and it didnt have the bands i needed to connect to AWS bands. So stupid me... not backing up anything... at all, thought it would be fine to use QPST and restore it with a AWS file that i always used to enable aws bands on a S4. Didnt work so i came across this thread and noticed someone mentioned somthing about using the note 2 qpst file , that also didnt work.I then noticed that my phone showed no bars or roaming. I go into mobile networks settings to search for a network and it just searches and never stops or sometimes it will say error. My imei still shows.
Im on Sammobile.com trying differant firmwares for the n9005 with odin and no luck, they all boot up and show no bars, no networks nothing, i feeling im looking in the wrong area of where the problem is. Im not sure what i have done. All help is greatly appreciated. Thanks

TONKAFORCE said:
i just bought the phone yesterday screwed up and ive been working on it for over 15 hours and im hoping someone of expertise can get me out of this issue.
I have a N9005 , SN: RF1D963X6PD
I live in Canada and use Wind Mobile (AWS BANDS) same as tmobile. I bought the phone and insterted my sim and noticed that i would only connect roaming. I then figured out that i had bought a international version and it didnt have the bands i needed to connect to AWS bands. So stupid me... not backing up anything... at all, thought it would be fine to use QPST and restore it with a AWS file that i always used to enable aws bands on a S4. Didnt work so i came across this thread and noticed someone mentioned somthing about using the note 2 qpst file , that also didnt work.I then noticed that my phone showed no bars or roaming. I go into mobile networks settings to search for a network and it just searches and never stops or sometimes it will say error. My imei still shows.
Im on Sammobile.com trying differant firmwares for the n9005 with odin and no luck, they all boot up and show no bars, no networks nothing, i feeling im looking in the wrong area of where the problem is. Im not sure what i have done. All help is greatly appreciated. Thanks
Click to expand...
Click to collapse
I don't know where I should start from, but here are some suggestions:
1- Try to flash the original stock firmware for your device. You can find your original CSC using Phone INFO ★Samsung★ app, look for the 'Original CSC' in the 'CSC INFO' section. Then open the menu 'Firmware Browser', enter that CSC into the CSC textbox to search and download the firmware.
2- Open the dialer > *#0011# (capture screenshot #1) > Menu - Back > Menu - Key Input > Q0 > wait... > DEBUG SCREEN > NAS INFORMATION > MM INFORMATION (capture screenshot #2) > Menu - Back > MM REJECT CAUSE (capture screenshot #3). And post those 3 screenshots for more investigation.
3- If you want to add some bands to the phone, you may need the Qualcomm NV Calculator app.

vndnguyen said:
I don't know where I should start from, but here are some suggestions:
1- Try to flash the original stock firmware for your device. You can find your original CSC using Phone INFO ★Samsung★ app, look for the 'Original CSC' in the 'CSC INFO' section. Then open the menu 'Firmware Browser', enter that CSC into the CSC textbox to search and download the firmware.
2- Open the dialer > *#0011# (capture screenshot #1) > Menu - Back > Menu - Key Input > Q0 > wait... > DEBUG SCREEN > NAS INFORMATION > MM INFORMATION (capture screenshot #2) > Menu - Back > MM REJECT CAUSE (capture screenshot #3). And post those 3 screenshots for more investigation.
3- If you want to add some bands to the phone, you may need the Qualcomm NV Calculator app.
Click to expand...
Click to collapse
Thanks for responding vndnguyen,
1, i did as you said and coincidently the firmware that it suggested was the same one i had already installed (which seems to the be most stable one of the ones ive tried) so im not sure if the csc code was just reading what i had already flashed or if it was a coincidence i flashed the one i was supposed to. But i did a fresh flash, wiped everything, clean cache and flashed and samething no bars.
2, when i try to go to service mode using *#0011# , its all blank, so no luck in screenshoting anything.
3, i installed nv calculator and wrote the code for my requested on NV 1877, but no change.
I screenshoted some info in phone info samsung app, maybe that can somewhat help you with my issue. Check the attachment below.Thanks again

TONKAFORCE said:
Thanks for responding vndnguyen,
1, i did as you said and coincidently the firmware that it suggested was the same one i had already installed (which seems to the be most stable one of the ones ive tried) so im not sure if the csc code was just reading what i had already flashed or if it was a coincidence i flashed the one i was supposed to. But i did a fresh flash, wiped everything, clean cache and flashed and samething no bars.
2, when i try to go to service mode using *#0011# , its all blank, so no luck in screenshoting anything.
3, i installed nv calculator and wrote the code for my requested on NV 1877, but no change.
I screenshoted some info in phone info samsung app, maybe that can somewhat help you with my issue. Check the attachment below.Thanks again
Click to expand...
Click to collapse
a- As we all know the Galaxy Note 3 was launched on September 2013, but your manufacturing date is 04.2013? This sounds weird.
b- Your manufacturing date does not match with the S/N, so the phone is refurbished. You can check this by open the menu 'Refurbishment Check'.
c- Actually your phone may be N900A, but it has been flashed with N9005 firmware. Can you show a hi-res picture of the back sticker, behind the battery?
d- As your Knox flag is 0x1, you can root your phone (if it has not been rooted), then open the Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > 0011 > 'Launch 0', and follow the steps #2 above to take 3 screenshots for further checking.

vndnguyen said:
a- As we all know the Galaxy Note 3 was launched on September 2013, but your manufacturing date is 04.2013? This sounds weird.
b- Your manufacturing date does not match with the S/N, so the phone is refurbished. You can check this by open the menu 'Refurbishment Check'.
c- Actually your phone may be N900A, but it has been flashed with N9005 firmware. Can you show a hi-res picture of the back sticker, behind the battery?
d- As your Knox flag is 0x1, you can root your phone (if it has not been rooted), then open the Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > 0011 > 'Launch 0', and follow the steps #2 above to take 3 screenshots for further checking.
Click to expand...
Click to collapse
yes you are correct, it said it was refurbished
ive attached a pic of the back sticker, im not sure if this may hint to anything, but the sticker on the back looks as if its on a slant (maybe someone changed it and put it on)
i tried what you said and once i click the launch 0 , the servicemode screen still shows up blank, i read in another thread that Samsung disabled it in N9005 ROMs. could that be why it shows up blank

TONKAFORCE said:
yes you are correct, it said it was refurbished
ive attached a pic of the back sticker, im not sure if this may hint to anything, but the sticker on the back looks as if its on a slant (maybe someone changed it and put it on)
Click to expand...
Click to collapse
The info on the back sticker are matched with the IMEI and S/N in the app. That means the back ticker are original. But the phone's hardware (mainboard) has been changed, it may be due to repairing or warranty etc...
i tried what you said and once i click the launch 0 , the servicemode screen still shows up blank, i read in another thread that Samsung disabled it in N9005 ROMs. could that be why it shows up blank
Click to expand...
Click to collapse
Nope, Samsung only disable the service menu on some models (e.g Verizon). But with this tool (Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > 0011 > 'Launch 0') you can launch any secret codes that are available in your device.
Can you show me that blank screen? And also show me the screenshot of Phone INFO ★Samsung★ app > Menu > 'Secret Codes'?

vndnguyen said:
The info on the back sticker are matched with the IMEI and S/N in the app. That means the back ticker are original. But the phone's hardware (mainboard) has been changed, it may be due to repairing or warranty etc...
Nope, Samsung only disable the service menu on some models (e.g Verizon). But with this tool (Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > 0011 > 'Launch 0') you can launch any secret codes that are available in your device.
Can you show me that blank screen? And also show me the screenshot of Phone INFO ★Samsung★ app > Menu > 'Secret Codes'?
Click to expand...
Click to collapse
both photos are in the attachment

vndnguyen said:
The info on the back sticker are matched with the IMEI and S/N in the app. That means the back ticker are original. But the phone's hardware (mainboard) has been changed, it may be due to repairing or warranty etc...
Nope, Samsung only disable the service menu on some models (e.g Verizon). But with this tool (Phone INFO ★Samsung★ app > Menu > 'Secret Codes' > 0011 > 'Launch 0') you can launch any secret codes that are available in your device.
Can you show me that blank screen? And also show me the screenshot of Phone INFO ★Samsung★ app > Menu > 'Secret Codes'?
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update**
so i went into nv editor and added "115868416" in line 1877. after that i tried *#0011#,*#2222#,*#9090#. and was able to retrieve the following screenshots in the attachment. but i was still unable to do your instruction of pressing back >KEY INPUT Q0 > .... (stayed on the same screen, nothin happen)

TONKAFORCE said:
update**
so i went into nv editor and added "115868416" in line 1877. after that i tried *#0011#,*#2222#,*#9090#. and was able to retrieve the following screenshots in the attachment. but i was still unable to do your instruction of pressing back >KEY INPUT Q0 > .... (stayed on the same screen, nothin happen)
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Click to collapse
Your device has been modified in unappropriate way so all service menu do not work as expected.
I dont know what I have to suggest now. Try to flash the stock rom to get it back to the original state.

vndnguyen said:
Your device has been modified in unappropriate way so all service menu do not work as expected.
I dont know what I have to suggest now. Try to flash the stock rom to get it back to the original state.
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I appreciate your time and effort , one more thing before you go.
I loaded on VISION X ROM, from there i was able to capture the screen shots you requested, they are in the attachments below.
Also i looked through your app phone info samsung and it appeared all my info was quite differant from when i first showed you it, now its saying my phone is a n900t with the vision ROM, I will also attach pics below, please let me know what you think. thanks

Try flashing the stock firmware and capture screenshots again.

update
after flashin with vision x and using blaze kernel i was able to look around the service mode menue and found NV REBUILD. i just went through every menu until i found it and bam, got roaming signals back, so i was happy, now i just have to figure out how to get the aws signal working, thanks for all your help and time

So the key solution is NV REBUILD.

TONKAFORCE said:
update
after flashin with vision x and using blaze kernel i was able to look around the service mode menue and found NV REBUILD. i just went through every menu until i found it and bam, got roaming signals back, so i was happy, now i just have to figure out how to get the aws signal working, thanks for all your help and time
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what code you use to enter service mode. i try a lot of codes and no one gets me there. thanks

bandolero584 said:
what code you use to enter service mode. i try a lot of codes and no one gets me there. thanks
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try *#197328640# .. if that takes you to the service mode, then open the menu bar and click "key" and type "Q" , then open menu again click "key" and type "0000" (zeros) ....
if that first code doesnt get you in, use *#9090#

For some reason, that code doesn't work on many phones. You can use this way instead:
Use 'Phone INFO ☆Samsung☆' app > Menu > 'Secret Codes' > 197328640 > 'Launch 0'.
Note: Root is required for it to work.

solved
many thanks my friends. *#0011# do the trick.

bandolero584 said:
many thanks my friends. *#0011# do the trick.
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but i cant get my signal back

bandolero584 said:
but i cant get my signal back
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Try NV REBUILD, as suggested by TONKAFORCE above.

vndnguyen said:
Try NV REBUILD, as suggested by TONKAFORCE above.
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I do but nothing works. I have signal and when i place a call the signal drops and i have the message not registered on network. I compare the efs file with my wifes 900w8 and its ok no files missing, Also did a hardware test putting the board on the other phone and nothing happen. its definetily a software issue.