unable to connect to network - Galaxy S6 Q&A, Help & Troubleshooting

Hi guys
Just can't seem to get round this problem, tried everything on Google for fixing issue but nothing works. Phone just came up with unable to connect to network so I can't do anything
Please help
Many thanks
Steve

Check IMEI nr

Done the *#06# and the imei came up ok

Did u tried to reflash the modem via Odin?

I haven't but it's stock not jailbreak

Related

[Q] [q] after unlocking sim card...no one accepted

HI GUYS...
I UNLOCKED MY SAMSUNG GALAXY INFUSE AS USUAL, AND ITS OK "UNLOCKED"...
BUT WHEN I INSERT MY SIM CARD IT WORKED FOR FEW MINUTES, AFTER THAT IT SAYS NO SERVICE AND THERE IS NO SIGNAL AT ALL... BUT SOMETIME I GOT SIGNALS BUT WITHOUT REGISTERED NETWORK.
NOTE:
MABY THE PROBLEM FROM THE IMEI NUMBER, BECAUSE I GOT IT WRONG , IT IS LIKE IN THE ATTACHMENT.
PLEASE GUYS HELP ME ....
Yep, a borked imei number will not allow you to connect to your cellular network...
I'm guessing that your efs folder wasn't backed up... you can try this...http://forum.xda-developers.com/showthread.php?t=881162
I haven't tried this but good luck.
thank you brassguy...
but does this work for infuse 4G ?
In addition, I read that we can change the IMEI number using the ADB, or is there another way to do this?
Also, what about the GSII_repair app, can I use it for my phone (infuse 4G)?
i had this problem last night where i flashed a rom. i return it to stock and imei showed up.
was having a imei" unknown error" and i backed up now on my computer.
ps ebay sales unlock service for 0.99$ if you didn't buy the code and just hacked it with hex or whatever
mine is already unlocked and it's permanent
i do travel over seas alot
But i returned mine to stock many times but the imei number still like this.
I did no get you in the third line???
BrassGuy said:
Yep, a borked imei number will not allow you to connect to your cellular network...
I'm guessing that your efs folder wasn't backed up... you can try this...http://forum.xda-developers.com/showthread.php?t=881162
I haven't tried this but good luck.
Click to expand...
Click to collapse
It does not work for me....
Because I did not find the those numbers in hexeditor
THERE ARE 3 Total Lines you will need to edit:
00188008
00188010
00188020
or maby I did something wrong
Please guys someone help me to solve this problem ,because I can not use the phone....
No one have ever faced or seen this problem with someone and solved??

[Q] Skyrocket no sim ... a posible fix

hi i know there are a lot of threats already of this but now i bring a posible solution to this problem
in my case is no hardware problem cuz i change it, i have falshed a lot of modem and still says no sim... insert sim
btw the phone is unlock. so i decide to leave my skyrocket as nonfuntional phone but i start tu play with the service mode
and suddendly recognize the sim card and get data and works great. but it only works until you reset or power of the phone.
if that happend you have to do my steps again and that way you get sim recognition again.
i post this cuz im not a developer i dont know to much about debuging mode so plp that know that can see my steps a find a permanent solution
to the no sim error on skyrocket.
before start you have to inserte the FUNCTIONAL SIM CARD and power up the phone, it will power with no sim error
un dialer put *#197328640#
enter to debug screen 1
enter to phone control 8
enter to simulation 5
enter to modem Assert (reset)
at this point it appear to dont do anything but wait like 30 seg you will see the signals would restart and then do this
press menu and choose end
there it is now it recognize the sim...... so it possible is something with MODEM ASSERT (reset) but this is a solution not PERMANENT cuz when you reset o turn off the phone you have to do this again to get sim recognition again
so pliz devoleper make a PERMANENT solution with what i found
i try this with an att skyrocket with UCL2 baseband and UCL2 oem root ics
if you guys try this or think it its not possible just post me and on the weekend i ll upload a youtube video with all the steps and you ll see that it works
sorry for my english
Did you back up your efs folder?
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
efs folder
Mervingio said:
Did you back up your efs folder?
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
i bougth the skyrocket from ebay already with this issue so i dont have a efs folder backup. the phone is sim unlock
i also have another att skyrocket same version can a copy the efs file from it and back up on the defective skyrocket?
4italia4 said:
i bougth the skyrocket from ebay already with this issue so i dont have a efs folder backup. the phone is sim unlock
i also have another att skyrocket same version can a copy the efs file from it and back up on the defective skyrocket?
Click to expand...
Click to collapse
I think that would clone the imei and mac addresses aka bad news.
damn
lart2150 said:
I think that would clone the imei and mac addresses aka bad news.
Click to expand...
Click to collapse
well the defective skyrocket showns the imei and mac and its correct with the back label, i already backed up tha efs folder. i also try tu run the GSII_repair ant it says on step 3 nv_data.bak and his nv_data.bak.m5d is miss so i think that the problem is something with that. As i have the back up of my partial efs folder i think i can start playing around and see what i got cuz in my partial efs folder i have my imei backed up
what do you think?
4italia4 said:
well the defective skyrocket showns the imei and mac and its correct with the back label, i already backed up tha efs folder. i also try tu run the GSII_repair ant it says on step 3 nv_data.bak and his nv_data.bak.m5d is miss so i think that the problem is something with that. As i have the back up of my partial efs folder i think i can start playing around and see what i got cuz in my partial efs folder i have my imei backed up
what do you think?
Click to expand...
Click to collapse
IMO you need back ALL to stock and UNROOT then start from zero and see.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Mervingio said:
IMO you need back ALL to stock and UNROOT then start from zero and see.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
i thought he tried going back to stock
note: going back to stock will unroot , its just like getting it new from carrier, then see if your having sim card issues, btw which carrier are u trying to use, att?
mas movil
vincom said:
i thought he tried going back to stock
note: going back to stock will unroot , its just like getting it new from carrier, then see if your having sim card issues, btw which carrier are u trying to use, att?
Click to expand...
Click to collapse
the phone is ulock and in the efs folder have the imei folder and it showns the correct imei i already back up that folder. im trying to use a panamamenian gsm carrier. i got data internet can make calls can do everything but after y make the steps above after turn on the phone everytime
so this weekend i ll try some new stuff go to stock unroot rom try to merge the efs folder of the good one skyrocket without pasting the imei folder and lets si what i got
4italia4 said:
the phone is ulock and in the efs folder have the imei folder and it showns the correct imei i already back up that folder. im trying to use a panamamenian gsm carrier. i got data internet can make calls can do everything but after y make the steps above after turn on the phone everytime
so this weekend i ll try some new stuff go to stock unroot rom try to merge the efs folder of the good one skyrocket without pasting the imei folder and lets si what i got
Click to expand...
Click to collapse
leave the efs folder alone, just try the stock firmware as is to test
I too am having a problem with an AT&T Skyrocket that is rooted. I have been using it without a problem with Straighttalk's AT&T SIM. I decided to switch it to T-Mobile's $30 plan and unlocked the phone. It worked except service was extremely poor so I flashed the SKY ICE 4.2E R5goo.zip and SKY ICE 4.2-17.zip ROM (T-mobile radio). This didn't work any better so I read that I should try a couple different radios. I attempted to flash the Blaze radio since that seems to be the most popular and after rebooting I get the no SIM error. I have reflashed the stock ROM using ODIN (several times) and now neither the T-mobile or ST SIM is recognized.
I found this thread and attempted to go through the procedure but there is no modem assert reset on my menus.
Any help would be a appreciated.
truebeliever71 said:
I too am having a problem with an AT&T Skyrocket that is rooted. I have been using it without a problem with Straighttalk's AT&T SIM. I decided to switch it to T-Mobile's $30 plan and unlocked the phone. It worked except service was extremely poor so I flashed the SKY ICE 4.2E R5goo.zip and SKY ICE 4.2-17.zip ROM (T-mobile radio). This didn't work any better so I read that I should try a couple different radios. I attempted to flash the Blaze radio since that seems to be the most popular and after rebooting I get the no SIM error. I have reflashed the stock ROM using ODIN (several times) and now neither the T-mobile or ST SIM is recognized.
I found this thread and attempted to go through the procedure but there is no modem assert reset on my menus.
Any help would be a appreciated.
Click to expand...
Click to collapse
Did you notice in odin if it flashed files named mdm.bin and amss.bin? That's the radio.
In case you didn't (and didn't read the 1 stop thread), here are som links for radios:
A thread with only t-mobile radios (work on our phone too) and here are all the i727 radios.
Hopefully this will help, but really i'm just guessing, maybe someone else can spread some light on your problem.
I'm guessing (hoping) that for some reason the blaze radio failed to flash and so you got a corrupt radio. Then you flashed stock tar that didn't have modem in it.
lingowistico said:
Did you notice in odin if it flashed files named mdm.bin and amss.bin? That's the radio.
In case you didn't (and didn't read the 1 stop thread), here are som links for radios:
A thread with only t-mobile radios (work on our phone too) and here are all the i727 radios.
Hopefully this will help, but really i'm just guessing, maybe someone else can spread some light on your problem.
I'm guessing (hoping) that for some reason the blaze radio failed to flash and so you got a corrupt radio. Then you flashed stock tar that didn't have modem in it.
Click to expand...
Click to collapse
Yes it did flash the mdm and amss bins. I'm suspecting something happened to the SIM holder since it will not read any of the SIMs (Tmobile, ATT or ST) I tried in it and have another on it's way. I'll see if that changes the outcome.
4italia4 said:
hi i know there are a lot of threats already of this but now i bring a posible solution to this problem
in my case is no hardware problem cuz i change it, i have falshed a lot of modem and still says no sim... insert sim
btw the phone is unlock. so i decide to leave my skyrocket as nonfuntional phone but i start tu play with the service mode
and suddendly recognize the sim card and get data and works great. but it only works until you reset or power of the phone.
if that happend you have to do my steps again and that way you get sim recognition again.
i post this cuz im not a developer i dont know to much about debuging mode so plp that know that can see my steps a find a permanent solution
to the no sim error on skyrocket.
before start you have to inserte the FUNCTIONAL SIM CARD and power up the phone, it will power with no sim error
un dialer put *#197328640#
enter to debug screen 1
enter to phone control 8
enter to simulation 5
enter to modem Assert (reset)
at this point it appear to dont do anything but wait like 30 seg you will see the signals would restart and then do this
press menu and choose end
there it is now it recognize the sim...... so it possible is something with MODEM ASSERT (reset) but this is a solution not PERMANENT cuz when you reset o turn off the phone you have to do this again to get sim recognition again
so pliz devoleper make a PERMANENT solution with what i found
i try this with an att skyrocket with UCL2 baseband and UCL2 oem root ics
if you guys try this or think it its not possible just post me and on the weekend i ll upload a youtube video with all the steps and you ll see that it works
sorry for my english
Click to expand...
Click to collapse
Have you found a permanent solution for this problem? I been having the same issue with a SGH-M919 Tmobile version working on Movistar Colombia.
Thank you.
Very familiar issues buying from ebay garbage
4italia4 said:
hi i know there are a lot of threats already of this but now i bring a posible solution to this problem
in my case is no hardware problem cuz i change it, i have falshed a lot of modem and still says no sim... insert sim
btw the phone is unlock. so i decide to leave my skyrocket as nonfuntional phone but i start tu play with the service mode
and suddendly recognize the sim card and get data and works great. but it only works until you reset or power of the phone.
if that happend you have to do my steps again and that way you get sim recognition again.
i post this cuz im not a developer i dont know to much about debuging mode so plp that know that can see my steps a find a permanent solution
to the no sim error on skyrocket.
before start you have to inserte the FUNCTIONAL SIM CARD and power up the phone, it will power with no sim error
un dialer put *#197328640#
enter to debug screen 1
enter to phone control 8
enter to simulation 5
enter to modem Assert (reset)
at this point it appear to dont do anything but wait like 30 seg you will see the signals would restart and then do this
press menu and choose end
there it is now it recognize the sim...... so it possible is something with MODEM ASSERT (reset) but this is a solution not PERMANENT cuz when you reset o turn off the phone you have to do this again to get sim recognition again
so pliz devoleper make a PERMANENT solution with what i found
i try this with an att skyrocket with UCL2 baseband and UCL2 oem root ics
if you guys try this or think it its not possible just post me and on the weekend i ll upload a youtube video with all the steps and you ll see that it works
sorry for my english
Click to expand...
Click to collapse
Hi, im having the same problem but when i put the numbers *#197328640# it doesn't shoe me anything, empty list, no options!
please i really need any help in this :/
thanks
Not working with your method
4italia4 said:
hi i know there are a lot of threats already of this but now i bring a posible solution to this problem
in my case is no hardware problem cuz i change it, i have falshed a lot of modem and still says no sim... insert sim
btw the phone is unlock. so i decide to leave my skyrocket as nonfuntional phone but i start tu play with the service mode
and suddendly recognize the sim card and get data and works great. but it only works until you reset or power of the phone.
if that happend you have to do my steps again and that way you get sim recognition again.
i post this cuz im not a developer i dont know to much about debuging mode so plp that know that can see my steps a find a permanent solution
to the no sim error on skyrocket.
before start you have to inserte the FUNCTIONAL SIM CARD and power up the phone, it will power with no sim error
un dialer put *#197328640#
enter to debug screen 1
enter to phone control 8
enter to simulation 5
enter to modem Assert (reset)
at this point it appear to dont do anything but wait like 30 seg you will see the signals would restart and then do this
press menu and choose end
there it is now it recognize the sim...... so it possible is something with MODEM ASSERT (reset) but this is a solution not PERMANENT cuz when you reset o turn off the phone you have to do this again to get sim recognition again
so pliz devoleper make a PERMANENT solution with what i found
i try this with an att skyrocket with UCL2 baseband and UCL2 oem root ics
if you guys try this or think it its not possible just post me and on the weekend i ll upload a youtube video with all the steps and you ll see that it works
sorry for my english
Click to expand...
Click to collapse
I didn't find option in Simulation (I have inserted the Working Sim Card). Well I live in Mumbai,India. I can't come to US just to fix this phone. So please tell me what to do now? plz Plz tell me. am eagerly waiting for your reply.
I am finding permanent solution for this problem.
So you will need to solutions for this problem.
Please contact us on 9420076969.
Your phone is still properly working.

[Q] Mobile network Problem Helpe

Heya all i have a question and a problem for few days allready now i just flashed RootBox-JB-i9100-Nightly-20130624.zip and i do not have network connection anymore , i also had this problem on cm10.1, only rom that worked was RootBox-JB-i9100-V4.0.zip , i have tried to restore efs with efs pro still nothing, when i try to search for network in sistem i say error searching dor networks, i have sgs2 network is Orange Romania...also tryed *#*#4636#*#* this code and at network i cant check smt else then unknown. anyone pls helpe i allready got gray hair cos of this ..)
Soo, i have tryed every single rom on www with build date 2013.06 ++ and on any single one mobile network is not working i get the same message when i try to search for network "error when searching network" i have tryed all methodes i could find on net : galaxsim unlock, efs backup, efs backup on pc,efs backup and restore with Ktoll app, i extacted efs files from a nandroid backup, i matched ril with getril, flashed diferent kernels, flashed diferent modem's, went into sistem debug,changed sim, changed network provider. all of this had the same result NO NETWORK :S.then i went for flashing roms with build date 2013.05.++ and they are all working network is working on them soo it seems this month builds are not for my nob phone.
Still if anyone see this and have another solution i am all ears. Thanks and gl
Phone samsung galaxy s2
Kernel :Kernel_Siyah-Dorimanx-V9.32-[01-08]-[17-06]-JB-CM-AOKP-SGII-PWR-CORE
Rom atm: RootBox-JB-i9100-V4.0
Maniac9331 said:
Heya all i have a question and a problem for few days allready now i just flashed RootBox-JB-i9100-Nightly-20130624.zip and i do not have network connection anymore , i also had this problem on cm10.1, only rom that worked was RootBox-JB-i9100-V4.0.zip , i have tried to restore efs with efs pro still nothing, when i try to search for network in sistem i say error searching dor networks, i have sgs2 network is Orange Romania...also tryed *#*#4636#*#* this code and at network i cant check smt else then unknown. anyone pls helpe i allready got gray hair cos of this ..)
Soo, i have tryed every single rom on www with build date 2013.06 ++ and on any single one mobile network is not working i get the same message when i try to search for network "error when searching network" i have tryed all methodes i could find on net : galaxsim unlock, efs backup, efs backup on pc,efs backup and restore with Ktoll app, i extacted efs files from a nandroid backup, i matched ril with getril, flashed diferent kernels, flashed diferent modem's, went into sistem debug,changed sim, changed network provider. all of this had the same result NO NETWORK :S.then i went for flashing roms with build date 2013.05.++ and they are all working network is working on them soo it seems this month builds are not for my nob phone.
Still if anyone see this and have another solution i am all ears. Thanks and gl
Phone samsung galaxy s2
Kernel :Kernel_Siyah-Dorimanx-V9.32-[01-08]-[17-06]-JB-CM-AOKP-SGII-PWR-CORE
Rom atm: RootBox-JB-i9100-V4.0
Click to expand...
Click to collapse
HY,I THINK that the problem is with the APN.Try to go to settings,more and there you will fin APN(access point names).In this setting you will find find more options,choose the one that fits your subscription from your provider(ex; vodafone live),if you are not sure call your provider and ask there.This should solve youre problem.PLEASE PRESS THANKS IF I HELPED!!!!!
I did reset apn settings on and on , restored original ones from working rom, even called to network provider and asked to check my settings in their sistem and its all ok .. Tnx anw
Sent from my GT-I9100 using xda app-developers app

[Completed] Have signal but not registered on network

I have Samsung Galaxy S3 GT-I9300. When the google drive app was downloading from google play, my phone went off due to poor battery. Later when I tried to turn it ON, it has been getting stuck in the boot. So I decided to reinstall my custom ROM. Being busy with my baby, toddler, household chores and job, I gave it to my brother to flash the ROM. After a while, I noticed that my sim was bricked.
It says "Emergency Calls Only", has fake IMEI but working signal.
We did not backup the efs. I tried searching all the methods like modem installation, CSC, baseband verions, IMEI re-write, Kies Upgrade and Initialization, other people's efs restore, etc. But the problem is unchanged. Some of the followed method might have failed for not having proper knowledge like IMEI re-write tool works on specified chipset, etc.
What we noticed is that using different baseband version toggles from having network signal or no signal.
Kies shows more than four firmware versions and no other details like CSC, etc.
How do I clean up all these especially to have SIM working on my phone?
I appreciate you assistance to be brief and clear to understand steps than sending links. Because my time is stress-fully short.
Hi !
There is some confusing info in your post
What do you mean with it has fake IMEI " ? Have you changed it ?
You say that you have a working SIM on certain basebands , is this happening on a custom rom or stock ?
Have you tried to flash a stock firmware as I see that you tried to flash "your custom rom " ?
Cheers !
First of all, thank you for your response and interest to assist.
My mobile's IMEI is shown as 004999010640000 which is not original. Can you help me to change it to correct IMEI suitable for my Samsung S3 GT-i9300 chipset, if that helps in enabling sim to connect to a network? I think changing method only masks the IMEI?
I have tried flashing stock firmware and also Kies Upgrade and Initialization.
I have also changed baseband version installation on stock ROM too. I don't know which baseband is correct to keep.. for my country India or in the country where my mobile is manufactured, incase that's locking sim accessibility? Some baseband bought signal and detected the network operator name, but the message still says "Emergency Calls Only" and is unable to connect to a network.
I presume this problem arose when installing custom ROM from TWRP recovery and it messed up with efs partition?
I had successfully flashed custom ROM many times before without this problem. I think there's some next step to follow to bring back the working sim like I heard of installing modem. I did just try installing modem but same problem as my baseband is already bringing signal.
I had tested my phone from sim unlock app and found out that CSC is locked and it limited specified MCC and MNC numbers. Is this hindering connection to Indian mobile network? Or corrupt efs? Or missed to manually install something?
Bump.

N985F network issue (error while searching for networks)

Hi everyone!
I have a Note 20 Ultra (N985F) Exynos variant.
My mom bought it for me without knowing it is a live demo unit. When she bought the phone it was working (network and data) but it was on Android 10. I started getting suspicions when i tried to update and it said "failed to register". I wanted to check the imei codes on the back and there's when i found out it is a LDU. I flashed Dr.Ketan's Android 11 ROM and i lost all network functions and when i try to search for network it says "Error while searching for network" so i flashed a stock Android 11 firmware from SamMobile but the issue still persists. I think i f****d up the EFS, don't know yet. I didn't have the mobile data toggle in the quick settings panel but after deleting the files in the EFS folder it got back. I have a little clue of what's happening here but i don't know how to solve it. When dialing *#0011# the imei status is "NG". Don't know if Chimera tool or Z3X will solve it by payching imei certificate (i don't have a license for those programs so that's why i'm asking before buying one). Will flashing pit file solve my problem? Will flashing a combination rom fix the issue? If not, how can i solve it? (P.S: wifi calling works, but i don't have any other type of cellular network)
Mate, the Nore 20 ultra is model number SM-N986B. The fact yours is 965 is the reason you aren't getting updates...
Unfortunately, short of unlocking bootloader (and even that is not assured), you can't just flash to a normal stock rom.
Never mind, i got it fixed by @hainguyenthao. I was skeptical at first but he really helped me. Kudos to you mate!
I have a network issue G780F please @hainguyenthao
Fixed by @hainguyenthao
LordLink said:
Fixed by @hainguyenthao
Click to expand...
Click to collapse
Hiw did you do it? Can you please share the method as the account tagged is currently disabled!

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