Mobile network signal is not working...need help - Galaxy S6 Edge+ Q&A, Help & Troubleshooting

Hi...after auto updating S6 edge pluse - G928C cant not register to any mobile network....
Anyone knws how to fix this...
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If you write the next in to dialer what is the first 2 noumber?
*#06#

facing the same problem. after flashing custom rom. no number shown on imei, only sn number. any idea?

Have u tried to simply reflash the rom? Before make a backup of your important datas, then do i full wipe.

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N9005 can't make calls and SMS

Hi folks! Im hoping someone can help me sort this out.
I rooted my n9005 using CF-root to install custom ROMs. I wanted to back-up EFS and searched google play store for an app, I found "Efs by BORIS.X.1" app.
This app is not to be used for NOTE 3 as per warning by the developer but I'm so stupid not to read. :crying:
My phone got into a bootloop and if I was able to pass boot up, after few seconds it would restart. I have scouted the forums for fixes and I have found one. I am now able to boot my phone normally but cannot make calls and sms.
My IMEI is unknown, I already fixed it using "EFS pro" tool, IMEI is showing now but still no calls and sms. I also noticed that the serial number is not the same as the one written at the back of the phone. I have read that restoring EFS solves this problem, but I don't have EFS backup.
To sum things up, the phone now boots up normally, IMEI is showing the right one, serial number still incorrect, can connect via WiFi, can't make calls and sms but phone has signal bars and says "Emergency Calls Only".
When trying to make a call, "not registered to network" shows up.
Im on MJ6 BTU firmware with root and TWRP recovery. I originally got my phone with MJ1 KSA firmware.
Im planning to bring my device to a nearest samsung sevice center but im not sure of they will accept it or if they can fix it even at a price.
It's been literally days since I had a good night sleep.
Please help. Thanks!
Having the same problem...How did you get your phone connected to efs pro? Every time I try my device reboots :/ Is it possible in recovery mode? Which recovery?
Did you find a final solution?
•You need to be rooted first.
•Make sure USB debugging is enabled.
•Dial *#0808# on your phone and select the same items in the image
•Connect your phone to your computer using the USB cable and open up EFS Pro.
I still haven't figured out the solution of my problem.
I brought my phone to the nearest Samsung service center but their solution is just to replace the motherboard which is very expensive.
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Try this , I know it say N900-t but it might work
http://forum.xda-developers.com/showthread.php?t=2471421
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KevandLynds said:
Try this , I know it say N900-t but it might work
http://forum.xda-developers.com/showthread.php?t=2471421
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Click to collapse
Thanks mate! I tried that before, I was able to get out of the bootloop but still no calls/sms/data connection.
I'm going to try it again though.
Change 12 in that script to 11 for n9005
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KevandLynds said:
Change 12 in that script to 11 for n9005
Sent from my SM-N9005 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
tried it but still no luck.
still no calls, sms, & data.
the serial number is still not the same as the one printed on the sticker of the phone.
maybe I really need to change my motherboard?
kipconrad said:
tried it but still no luck.
still no calls, sms, & data.
the serial number is still not the same as the one printed on the sticker of the phone.
maybe I really need to change my motherboard?
Click to expand...
Click to collapse
Did You manage to fix your phone? I am having the same problem and don't know what to do. Any suggestions ?
mamattar1 said:
Did You manage to fix your phone? I am having the same problem and don't know what to do. Any suggestions ?
Click to expand...
Click to collapse
My phone is fixed now. The one and only solution that worked for me is replacing the motherboard. Samsung Saudi did it, and I paid a fortune for it.
Worked For Me By SPT Repair 3G Network On N900w8 Using Spt
Regards

Please help! no signal after rom change

Hi guys
I have a UK i9505 which was running XXUFNB9, I rooted using CF auto root and installed PAC man rom now i have no signal to make calls or texts i have re installed the original firmware but still nothing, please help guys, i need my phone for work and its becoming a nightmare.
Factory reset
[email protected] said:
Factory reset
Click to expand...
Click to collapse
tried that, no luck
What recovery are you using? I had this problem before!
kduan said:
What recovery are you using? I had this problem before!
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Click to collapse
ITS STOCK RECOVERY AT THE MOMENT BUT WHEN I FLASHED IT WAS PHILZ TOUCH (sorry about caps)
Does anyone have any ideas? i've re flashed the modem and still nothing
Check that you're baseband isn't "unknow". And check if you lost the imei
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Jacopo97 said:
Check that you're baseband isn't "unknow". And check if you lost the imei
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Click to collapse
thanks for your reply, how do i check that?
rumbo76 said:
thanks for your reply, how do i check that?
Click to expand...
Click to collapse
Settings, info , baseband
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Jacopo97 said:
Check that you're baseband isn't "unknow". And check if you lost the imei
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Click to collapse
Jacopo97 said:
Settings, info , baseband
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Click to collapse
baseband is i9505XXUAMDM
rumbo76 said:
Hi guys
I have a UK i9505 which was running XXUFNB9, I rooted using CF auto root and installed PAC man rom now i have no signal to make calls or texts i have re installed the original firmware but still nothing, please help guys, i need my phone for work and its becoming a nightmare.
Click to expand...
Click to collapse
Hi man. People keeps telling you to install new modem, kernel etc...but i think you have corrupted EFS folder.
I hope you backup your EFS folder before flashing ANY rom because, otherwise you will have to go to some repair shop.
Well, I don't understand a lot, but I think you could check if you didn't lost your IMEI. Go on Settings > About Device > Status and check if your IMEI still there.
If it is, I don't know what could be. You could try flash another modem or restore a backup (if you have one) with PhilZ Touch but if it isn't, that means you lost your IMEI. I remember I read about that somewhere, that there is a risk of losing IMEI when you flash a lot of ROMs.
If you have backup from your IMEI, just restore it. If you don't, I don't know what you could do, but I guess you could still do something.
One more thing: Wi-Fi works?
Like I said, I don't understand a lot, so everything I just said may be very stupid. Or not. Sorry for bad english.
FNXHenry said:
Well, I don't understand a lot, but I think you could check if you didn't lost your IMEI. Go on Settings > About Device > Status and check if your IMEI still there.
If it is, I don't know what could be. You could try flash another modem or restore a backup (if you have one) with PhilZ Touch but if it isn't, that means you lost your IMEI. I remember I read about that somewhere, that there is a risk of losing IMEI when you flash a lot of ROMs.
If you have backup from your IMEI, just restore it. If you don't, I don't know what you could do, but I guess you could still do something.
One more thing: Wi-Fi works?
Like I said, I don't understand a lot, so everything I just said may be very stupid. Or not. Sorry for bad english.
Click to expand...
Click to collapse
Thanks for the info guys its really getting to me now, i still have imei but no backup, wifi is working as is everything else except signal.
I have been having this problem over 3 months now, still not haven't been solve.... My imei and everything is in place, I tried flashing stock rom, custom rom, factory reset phone, tried almost every modem there is and still no luck, but the thing with mine is when I go into the town area I get a few signal bars certain area in town, very weird, what could really be the problem, I know it's not my network or my Sim card so what could it be
Did u ever solve ur problem? Still having this problem
Hey rumbo76 hru, this same problem happened with my brother with note 3, but in here india, he did tha root and falsh tha rom, then he lost root, then he goes bak to stoke firmware so he lost hus signal, and IMEI shows UNKNOWN no network registered, but he search his original firmware n falsh, and he got network n imei number bak, so plzz read n search ur specific device model number n flash, you will be succeed sure.. Plzz update us... Thnks... ?
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N910C Emergency Call only

My Note 4 N910c Running On 4.4.4 Stock
Imei: 350050500009692
Serial number : 410068ce492913f
Both of them are not My Imei Or serial .
I changed many sim but in vain .
tried to select network manually but nothing happens
With Amessage Displays Emergency Calls Only
Plz I need A fix . My Mobile Is Totally Like A piece of metal now
You have to tell history,then only we can help
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RISHI RAJ said:
You have to tell history,then only we can help
Sent from my SM-N910G using XDA Premium 4 mobile app
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Click to collapse
What do u mean . someone tried to root it and root works properly , then this problem appeared on the deck
Imei cannot change,if only you root your phone
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RISHI RAJ said:
Imei cannot change,if only you root your phone
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Click to collapse
unfortunately it happens , i need to fix it plllllz . anyone help me
love_story99000 said:
My Note 4 N910c Running On 4.4.4 Stock
Imei: 350050500009692
Serial number : 410068ce492913f
Both of them are not My Imei Or serial .
I changed many sim but in vain .
tried to select network manually but nothing happens
With Amessage Displays Emergency Calls Only
Plz I need A fix . My Mobile Is Totally Like A piece of metal now
Click to expand...
Click to collapse
Try to flash stock rom again.
jdomadia said:
Try to flash stock rom again.
Click to expand...
Click to collapse
I do it and it doesn't change still the same problem
I Also tried to flash modems in sweet rom for 4.4.4 but in vain . still the same problem ????
not registered on network
I'm having the same problem and can not connect to networks did not find a solution to this problem, even when maintenance shops. Is someone can help me? Thank you and sorry for bad English
Still need more details. What did you guys do exactly? Did you use CF autoroot, also, did you Odin the correct version for your phone? Did you install custom recovery? Anything else? Etc etc
Sent from my SM-N910P using XDA Free mobile app
beezar said:
Still need more details. What did you guys do exactly? Did you use CF autoroot, also, did you Odin the correct version for your phone? Did you install custom recovery? Anything else? Etc etc
Sent from my SM-N910P using XDA Free mobile app
Click to expand...
Click to collapse
I rooted it wrongly and someone interfere and make stupid things using root explorer . i did not install custom recovery .
after figuring out the problem . i installed stock rom and then i rooted it probably then installed cwm custom recovery . after that , someone told me that i should install and try some modems which exists in sweet rom for N910C , i tried many of them but even that nothing happens still the fake imei and fake serial .
same problem here
I have the same problem with a telcel mexico n910c i dont know what to do pleeese help
abracc26 said:
I have the same problem with a telcel mexico n910c i dont know what to do pleeese help
Click to expand...
Click to collapse
LOOks same problem . my phone now is no longer than a piece of metal
love_story99000 said:
LOOks same problem . my phone now is no longer than a piece of metal[/QUOTE
Not exactly a pice of metal its more like a wifi tablet
Click to expand...
Click to collapse
Any one!! some help plese....... urgent
help?????......
same problem now as mine my IMEI just became 350050500009692 /01 emergency call only why???
some nice paper weights at least lol none of you have efs back up ? tried restoring it if you do common rule with samsungs all ways back up you efs folder
the sad thing there is mine I don't have my backup
Try NV restore (If you have it Pre-backed up on your phone from factory- at least mine did not have on the N910C but it existed on my N910F) ... Dial: *#0011# , then Menu>Back, then Menu>Key Input> then type Q0000.
After that I don't know where the NV backup is (I forgot, and I don't have the phone now), but you should be able to search here on xda or google it up...
I hope your Exynos has a NV backup....
Good luck
====
edit:
Like this:

IMEI Backup, Restore

Any trusted method to backup and restore EFS partition (EFS and NV_data) to keep things going safe?
Thanks in advance
dark-shadow93 said:
Any trusted method to backup and restore EFS partition (EFS and NV_data) to keep things going safe?
Thanks in advance
Click to expand...
Click to collapse
Hello ... Are you rooted ? If so use EFS IEMI back up in play store...
I grabbed it from phone and placed on my PC and also saved it to google drive
Braggster
Braggster said:
Hello ... Are you rooted ? If so use EFS IEMI back up in play store...
I grabbed it from phone and placed on my PC and also saved it to google drive
Braggster
Click to expand...
Click to collapse
Absolutely rooted
Have you tried to restore using it?
I don't really trust these apps (bad experience on Galaxy S4) I would rather use Terminal emulator and type proper codes, which I want to know
Sorry if this is irrelevant but why do you back up imei?
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dark-shadow93 said:
Absolutely rooted
Have you tried to restore using it?
I don't really trust these apps (bad experience on Galaxy S4) I would rather use Terminal emulator and type proper codes, which I want to know
Click to expand...
Click to collapse
Hi mate sorry for delay I've not personally backed up as I've had no need to but I know a few ppl who have also it's produced by wanam
All best braggster
hungdinh1 said:
Sorry if this is irrelevant but why do you back up imei?
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Click to expand...
Click to collapse
Backuping EFS partition will backup data like device specific essential information such as the IMEI (International Mobile Station Equipment Identity), wireless device MAC address, baseband version, product code, system ID and NV data.
If you lose your IMEI during flashing and wiping roms, you will end up with a piece of brick incapable of making calls:crying:
Hi all
Can someone help me because my phone (g935f) imei show only 00000000000 and my s/n-code is null. Phone think it is g935fd but it is only g935f. Waranty is void and problems start when i flash custom rom and i forget take efs backup so i try to flash stock firmware but its not working and kies restore not working because it ask s/n number and i dont no it How i can solve these problems?
Sorry my bad english
Thanks
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What rom did you flash? Serial number is on the back of the phone isnt it?
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I flash renovate rom and serial number on the back of the phone is remove. I know what is my imei but i dont know how to put it in the phone. I think my imei and serial number is removed in efs folder because renovate rom use uk firmware and my phone needs nordic firmware but even if i flash nordic firmware with odin it's not solve the problem. I call samsung repair store and ask how much pay if they fix my phone and they say it's pay about 400-500€ so i try to find another solution fix that problem
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No other solution works sorry been a few people losing there imeis now. None of the usual fixes work.
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Okay thanks for the answer.
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I have the same issue. Frustrating that it cannot be repaired
Yeah thats probably right
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After messing up my EFS partition, my wife took mine to a phone repair shop owned by an old friend of hers. He is pretty sure he can fix it. He has it today and asked that we collect it tomorrow. I have my doubts but we will see.
Okay i also must deliver My phone to phone repair store but first i need to collect money. I hope he can fix your phone.
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CuBz90 said:
After messing up my EFS partition, my wife took mine to a phone repair shop owned by an old friend of hers. He is pretty sure he can fix it. He has it today and asked that we collect it tomorrow. I have my doubts but we will see.
Click to expand...
Click to collapse
Let us know how it goes. It will help others facing this problem.
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Don't worry guys the fix doesn't cost more than 20$ in my country hope It costs the same in yours
itll cost more than $20 if they have to use a box to repair. This is why i wont root this phone.
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No luck, he could not fix it
Sad to hear that
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No service and 4G! Really no fix :? Please help :(

Hii... Have been searching forum but seems like no one has the answear
Galaxy s7 edge european version. Phone worked perfectly for 4 month and then suddenly I lost mobile network and service Tried hard reset, network setting reset ect. nothing helps Put simcard in different phone - everything is ok. I red that this problem most likely can t be fixed by software... Is that true? Can I try something else to fix this? Whats the cause?
Thanks for your time
Have you been rooted. Costom rom .any modification. Check Imei if its ok. Check imei cert *#0011# ?? We need more info
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lummujaj said:
Have you been rooted. Costom rom .any modification. Check Imei if its ok. Check imei cert *#0011# ?? We need more info
Sent from my ONEPLUS A3003 using XDA-Developers mobile app
Click to expand...
Click to collapse
No modifications... IMEI status: OK :/
lummujaj said:
Have you been rooted. Costom rom .any modification. Check Imei if its ok. Check imei cert *#0011# ?? We need more info
Sent from my ONEPLUS A3003 using XDA-Developers mobile app
Click to expand...
Click to collapse
I guess tomorrow I will return the device. Bought it from official carrier. Doubt it s blocked. Strange that no one has solution to this problem yet because there are quite a few similar posts online. :/

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