Database Users

[Q] GALAXY S4 GT-9505 phone freeze when make calls

Hello,
I depesperately sending this issue after a long try to resolve my S4 Problem, My phone freeze when make calls and became unstable.
In the beginning i had Android 4.2.2, i did'nt change the ROM i was working with my phone during 7 months without any problems.
suddenly the problem appear and i've tried to flash it with the same ROM after a failure to resolve the issue , i put 4.3 version and still have the problems . I think i have to find the right version and firmware the question is how there are a lot of them ?

Go to Sam firmware and enter the info of your phone and the correct firmwares will be available to download
Sent from my Gt-i9505

atlantis0123 said:
Hello,
I depesperately sending this issue after a long try to resolve my S4 Problem, My phone freeze when make calls and became unstable.
In the beginning i had Android 4.2.2, i did'nt change the ROM i was working with my phone during 7 months without any problems.
suddenly the problem appear and i've tried to flash it with the same ROM after a failure to resolve the issue , i put 4.3 version and still have the problems . I think i have to find the right version and firmware the question is how there are a lot of them ?
Click to expand...
Click to collapse
Unbranded phone? Maybe u are flashing one firmware that's no is good... :highfive:

Joku1981 said:
Unbranded phone? Maybe u are flashing one firmware that's no is good... :highfive:
Click to expand...
Click to collapse
ok , how could we verify unbranded phone ?

atlantis0123 said:
ok , how could we verify unbranded phone ?
Click to expand...
Click to collapse
I mean if ur phone is unlocked free or is branded (orange, vodafone, etc)

Joku1981 said:
I mean if ur phone is unlocked free or is branded (orange, vodafone, etc)
Click to expand...
Click to collapse
it's SFR if you have a firmware to propose that will stabilize my phone it will be great

atlantis0123 said:
it's SFR if you have a firmware to propose that will stabilize my phone it will be great
Click to expand...
Click to collapse
Surprise! I have the last STOCK one -> HERE

32g sm-n9005 baseband unknown/imei null/sound and camera not working

After flashing the sm-n9005 to N9005DXUENE4 the phone is not function at all. Though I can still boot into the system it becomes very laggy, baseband unknown, imei null sound and camera not working. Did try to flash Sweetrom V7 still the same. Anyway if there's a way I can bring it back to life?

Try to flash back stock rom..or restore thru kies 3 will be much better..
Sent from my GT-S7500 using XDA Free mobile app

Did try the stock rom already, still the same.

at217 said:
Did try the stock rom already, still the same.
Click to expand...
Click to collapse
IMEI NULL/NULL is modem or hardware problem
My guess is that it is due to a modem/firmware mismatch. Start flashing a modem for same fw version.

did that already, one more thing the phone keyboard and the swipe to unlock is not responsive at all.repair.

did you find any solution and fixed your phone ?

ohayyam said:
did you find any solution and fixed your phone ?
Click to expand...
Click to collapse
that's a modem problem
flash ir with odin

rayman95 said:
that's a modem problem
flash ir with odin
Click to expand...
Click to collapse
I tried different stock rom and different modem files for LTE but still same... what is correct combination to fix this problem.
my CSC EUR, it was XSI changed due to custom rom ???
I have 6 LTE modem from indie omega rom and fount on xda 2 more MJI6 and MI6 ... I tried all with FNF2 , latest and older xsi stock roms and some combination of rom and modem. but could not fixed yet.
i tried your rom too )
i tried mirek190 methods but could not find a mmsblk0P11 file or edit mine on phone to write imei ...
still nothing ...

ohayyam said:
I tried different stock rom and different modem files for LTE but still same... what is correct combination to fix this problem.
my CSC EUR, it was XSI changed due to custom rom ???
I have 6 LTE modem from indie omega rom and fount on xda 2 more MJI6 and MI6 ... I tried all with FNF2 , latest and older xsi stock roms and some combination of rom and modem. but could not fixed yet.
i tried your rom too )
i tried mirek190 methods but could not find a mmsblk0P11 file or edit mine on phone to write imei ...
still nothing ...
Click to expand...
Click to collapse
When arrive the problem and which rom and modem do you have before?
You need to go back on this... you Don t have efs backup?????
Otherwise try to put NF2 modem with NF4 rom. Bootloader is not important.
But check if modem well installed because odin says PASS but still on old modem

Try to flash latest NG2 firmware after whipe cache and factory reset. It did the job for me.

rayman95 said:
When arrive the problem and which rom and modem do you have before?
You need to go back on this... you Don t have efs backup?????
Otherwise try to put NF2 modem with NF4 rom. Bootloader is not important.
But check if modem well installed because odin says PASS but still on old modem
Click to expand...
Click to collapse
how can i check the modem with baseband unknown imei null phone ? Even phone info samsung application shows nothing !!!

try khizar method to flash NF2 or NG2 modem

Thank you
rayman95 said:
try khizar method to flash NF2 or NG2 modem
Click to expand...
Click to collapse
I have been already try KHIZAR'S METHOD*to install different LTE Modems on my phone with different stock roms. No matter finally i gave my phone to local repair shop. Samsung Official repair center's do not care about my phone due to it is N9005 and it is not for my country selling phone.
And another question my first N9005 slept in water during almost whole night. When i wake up in the morning i found my phone in water since many hours. I give it repair shop to check also but seems to main board needs to be replaced. Connection sockets damaged badly like melted half of them. is it possible to only change the connection sockets instead of whole mainboard ? Any idea ? and Where can i get only the connection sockets ? from samy ? ))
And i am starting the googled to find N9005 mainboard sockets

You re the terminator of N9005.? ....... no idea about motherboard or connector sorry....

I am having the same issue,
I'm new to the site been cool so far learned a lot and done a lot with my Note 3 since being here.
I recently rooted and install a custom rom (N900_NF3_INU_Dr.Ketan Custom ROM K11) that works great, I tried flashing back to stock but encountered a major problem. after flashing to stock my IMEI is unknown and also my base-band from reading it seem as if my EFS got corrupted tried a ton of different thing and still I cant get this to work on stock. Only way my IMEI and base-band comes back is whenever I reinstall the custom rom (N900_NF3_INU_Dr.Ketan Custom ROM K11) and restore the EFS that was backed up during the first installation of this rom
Thanks in advance all help is greatly appreciated. :good::good:

juniorbb2201 said:
I am having the same issue,
I'm new to the site been cool so far learned a lot and done a lot with my Note 3 since being here.
I recently rooted and install a custom rom (N900_NF3_INU_Dr.Ketan Custom ROM K11) that works great, I tried flashing back to stock but encountered a major problem. after flashing to stock my IMEI is unknown and also my base-band from reading it seem as if my EFS got corrupted tried a ton of different thing and still I cant get this to work on stock. Only way my IMEI and base-band comes back is whenever I reinstall the custom rom (N900_NF3_INU_Dr.Ketan Custom ROM K11) and restore the EFS that was backed up during the first installation of this rom
Thanks in advance all help is greatly appreciated. :good::good:
Click to expand...
Click to collapse
So you are lucky , you can use your phone with custom ROM. I tried many custom and stock and different modems ..Still imei null and unkown basband (
Hopefully Samsung will fix this .ucking useless problem with 4.4.3 ROM...
sign: N9005 Terminator )

ohayyam said:
I tried different stock rom and different modem files for LTE but still same... what is correct combination to fix this problem.
my CSC EUR, it was XSI changed due to custom rom ???
I have 6 LTE modem from indie omega rom and fount on xda 2 more MJI6 and MI6 ... I tried all with FNF2 , latest and older xsi stock roms and some combination of rom and modem. but could not fixed yet.
i tried your rom too )
i tried mirek190 methods but could not find a mmsblk0P11 file or edit mine on phone to write imei ...
still nothing ...
Click to expand...
Click to collapse
Here mmsblk0P11

worked for me
goodoane said:
Try to flash latest NG2 firmware after whipe cache and factory reset. It did the job for me.
Click to expand...
Click to collapse
You are a gent. My phone is alive and well again thanks to your advice. Much appreciated

UNCNOWN IMEI,
I ALSO HAVE BEFORE
AND I INSTAL
Phronesis N7 v7.0.zip
AND IMEI IS OK,
BUT I THINK MY NOTE3
PROBLEM HARDWARE,
IT WORK ONLY WHEN
NETWORK GSM,
AND IT NO WORK IF
LTE/3G/2G AUTO,
IT NOTIFY "NO REGISTERED
InUNCNOWN IMEI,
I ALSO HAVE BEFORE
AND I INSTAL
Phronesis N7 v7.0.zip
AND IMEI IS OK,
BUT I THINK MY NOTE3
PROBLEM HARDWARE,
IT WORK ONLY WHEN
NETWORK GSM,
AND IT NO WORK IF
LTE/3G/2G AUTO,
IT NOTIFY "NO REGISTERED
IN NETWORK"
*
I THINK MAYBE NEED UPDATE MODEM WITH Odin, I UPDATE
MODEM NORDIC,
IT NOT HELP,
I UPDATE ANOTHER, AGAIN AND AGAIN, EVEN
I UPDATE OFFICIAL FIRMWARE,
ONE FILE AND FOUR WITH PIT
AND NOTHING BETTER THAN
Phronesis N7 v7.0.
I TRY INSTAL
ANOTHER FEW VERSIONS OF Phronesis
BUT IT BRICKS
AND ONLY v7.0
NO BRICKS.

Difficult understand your post .
Suggest flashing latest stock rom for your model and test .Check IMEI correct . Back up EFS .

[Q] Sound problem I9595 BlackEdition - Omega v33

Hello everybody,
i just put the a custom rom for the first time and i am actually really happy with this rom.
My friend called me 1h ago, so i noticed that i am hearing my friend fine, but the problem is that he cant hear me.
I tested it with the audio capture and it just sound messy.
Here are all the information:
Omega v33 - XXUGNF1
Android Version 4.4.2
Modellnummer: GT-19505 Black Edition
Basisbandversion I9505XXUGNF1
Kernel:3.4.0-talexop-2+-gb4fe160-dirty
[email protected]#4
I just tried it with the 3.4.0-Adam-2.3, but it is not working, too.
Did i install something wrong?
So which kernel is the right one for me to get the sound problem fixed?

varity said:
Hello everybody,
i just put the a custom rom for the first time and i am actually really happy with this rom.
My friend called me 1h ago, so i noticed that i am hearing my friend fine, but the problem is that he cant hear me.
I tested it with the audio capture and it just sound messy.
Here are all the information:
Omega v33 - XXUGNF1
Android Version 4.4.2
Modellnummer: GT-19505 Black Edition
Basisbandversion I9505XXUGNF1
Kernel:3.4.0-talexop-2+-gb4fe160-dirty
[email protected]#4
I just tried it with the 3.4.0-Adam-2.3, but it is not working, too.
Did i install something wrong?
So which kernel is the right one for me to get the sound problem fixed?
Click to expand...
Click to collapse
Hi ,
That problem most of the times is modem related , go Omega files /modem flash the same one again or upgrade it to the newest , follow instructions to do it
As shown in OP of Omega V33
Installation:
1. Backup your device (nadroid backup, titanium backup, efs backup ... etc) and save the backup to a safe place.
2. Flash the new bootloder and modems with odin
Bootloader -> BL_I9505XXUFNAD_481100_REV06_user_low_ship_MULTI_C ERT.tar.md5
If you already have the new Kit Kat bootloader there is no need to flash it again.
Modems XXUFNC9 -> I9505XXUFNC9_GSM_LTE_Modems.tar
Power off device completely, then boot to download mode and flash bootloader (if needed) and modems with odin
Then boot to android and check if the new modem XXUFNC9 flashed ok (if wifi is not working is normal)
3. Boot to Recovery --recommended TWRP, get the latest version from here -> http://teamw.in/project/twrp2/182--
and flash Omega and then boot to android.
You can flash without full wipe if you are coming from a previous Omega Kit Kat version, if not then flash with full wipe
PLEASE FOLLOW THE EASY INSTALLATION INSTRUCTIONS ELSE YOU WILL HAVE VARIOUS ISSUES!
BACKUP FIRST !!

I flashed the LTE_Modem_I9595XXUGNF1 again, but it is still the same problem.
Can i test an older one without any problems, or do you know anything else to solve my problem?

varity said:
I flashed the LTE_Modem_I9595XXUGNF1 again, but it is still the same problem.
Can i test an older one without any problems, or do you know anything else to solve my problem?
Click to expand...
Click to collapse
Mate ,
You have a I9505 or a I9595??

MAX 404 said:
Mate ,
You have a I9505 or a I9595??
Click to expand...
Click to collapse
pardon mistyped. I9505 is the right one.

varity said:
pardon mistyped. I9505 is the right one.
Click to expand...
Click to collapse
You can try with an older one if you wish and see if it helps , did you flash the GSM modem also?

MAX 404 said:
You can try with an older one if you wish and see if it helps , did you flash the GSM modem also?
Click to expand...
Click to collapse
Yes i installed both. I will try some of the LTE/GSM modems now.

I still have the microphone issue.
I Updated the baseband (GSM+LTE) to the newest I9505XXUGNF1, but i cant fix this microphone problem. It sounds like it is raining or something like the television where u cant get a programm.
I searched now about 5hours, but this is something i cant get fixed.
Please anyone here who can help with this issue?

Rom for N910K-L-S Korean 6.0.1 Multi CSC needed

hi to all XDA members & developers
i need to convert Korean Note 4 all 3 Models N910L-K-S to N910C so i can flash with any Rom N910C
Or any Good Custom Rom for N910L-K-S 6.0.1 support multi CSC all language stable with no probleme specialy battery
with Note4 or Note 5 Style debloated or bloated not problem for me
if any one know the idea maybe how to convert this models or how to work around with it don't hesitate to share your ideas
i know that this models (C-K-L-S)is the same Cpu exynos
thanks in advance
any help really appreciated

any idea ? any help ? iam sure there is someone here know any thing about this models

Hi bro, here you can find what you are looking for :
1- http://forum.xda-developers.com/note-4/development/truongtanstock-ux-rom2013266073dph6-t3481761
2-and for this site you need to sign up : http://bbs.gfan.com/forum.php?mod=forumdisplay&fid=1545&filter=typeid&typeid=11662 (for example http://bbs.gfan.com/forum.php?mod=v...age=1&filter=typeid&typeid=11662&typeid=11662 or http://bbs.gfan.com/forum.php?mod=v...age=1&filter=typeid&typeid=11662&typeid=11662 )

shabbat said:
Hi bro, here you can find what you are looking for :
1- http://forum.xda-developers.com/note-4/development/truongtanstock-ux-rom2013266073dph6-t3481761
2-and for this site you need to sign up : http://bbs.gfan.com/forum.php?mod=forumdisplay&fid=1545&filter=typeid&typeid=11662 (for example http://bbs.gfan.com/forum.php?mod=v...age=1&filter=typeid&typeid=11662&typeid=11662 or http://bbs.gfan.com/forum.php?mod=v...age=1&filter=typeid&typeid=11662&typeid=11662 )
Click to expand...
Click to collapse
thanks bro for your reply
as i read aboute the Rom it seem be good but multi csc i don't know & in my case i need rom that support full arabic setting menu etc
i asked tanthuychivietnam auther of this rom to make it multi csc but i dont know exacte if he will do that & when
did you tray this rom ? is ther arabic in setting language ?

thanks bro for the advice i used the rom from this link http://forum.xda-developers.com/note-4/development/truongtanstock-ux-rom2013266073dph6-t3481761
but it dosnot support multi language
if any news about any good rom thanks in advance

any news ?
thanks in advance

ashraf77160 said:
hi to all XDA members & developers
i need to convert Korean Note 4 all 3 Models N910L-K-S to N910C so i can flash with any Rom N910C
Or any Good Custom Rom for N910L-K-S 6.0.1 support multi CSC all language stable with no probleme specialy battery
with Note4 or Note 5 Style debloated or bloated not problem for me
if any one know the idea maybe how to convert this models or how to work around with it don't hesitate to share your ideas
i know that this models (C-K-L-S)is the same Cpu exynos
thanks in advance
any help really appreciated
Click to expand...
Click to collapse
Dear, I have Note 4 N-910C. This is what software is mentioned in the setting>about ( See screenshot) but in recovery it says N910S.
Now I m confused which model is this in real terms because it has very weird problem. sometime it gets into a constant reboot-loop without stop.
I have to Factory resets it through stock recovery. Its No-Rooted. Rooting and flashing the right firmware may resolve this issue i guess.
I didn't encountered any other issue except constant reboot-Loop. I also dont need rooting if this loop issue would be solved without rooting.
I m confident that you may have some solution to this.

farroo said:
Dear, I have Note 4 N-910C. This is what software is mentioned in the setting>about ( See screenshot) but in recovery it says N910S.
Now I m confused which model is this in real terms because it has very weird problem. sometime it gets into a constant reboot-loop without stop.
I have to Factory resets it through stock recovery. Its No-Rooted. Rooting and flashing the right firmware may resolve this issue i guess.
I didn't encountered any other issue except constant reboot-Loop. I also dont need rooting if this loop issue would be solved without rooting.
I m confident that you may have some solution to this.
Click to expand...
Click to collapse
from what i see and my experience tell me that your phone is n910s for sure 100% , its n910s with modified rom or just flashed with parts of n910c to convert it & add some language & debloat the rom from useless apps
to resolve this problem only flash the right firmware (stock ) No need to root
Or find Stable rom for N910S without restart or something
is there any other problem like battery drain or Heat too much or something else ?

ashraf77160 said:
from what i see and my experience tell me that your phone is n910s for sure 100% , its n910s with modified rom or just flashed with parts of n910c to convert it & add some language & debloat the rom from useless apps
to resolve this problem only flash the right firmware (stock ) No need to root
Or find Stable rom for N910S without restart or something
is there any other problem like battery drain or Heat too much or something else ?
Click to expand...
Click to collapse
No other problem faced. I rooted the device and then flashed the MIUI 8 cutom ROM. Yah, you were right. Model is N910S. But I ran into another issue after I flashed another ROM. Its IMEI is not showing by dialing *#06# as well as in setting> about. Although the IMEI which is written under battery is quite ligit which I checked through IMEI.info
I dont have EFS back type of anything. What should I do now?

farroo said:
No other problem faced. I rooted the device and then flashed the MIUI 8 cutom ROM. Yah, you were right. Model is N910S. But I ran into another issue after I flashed another ROM. Its IMEI is not showing by dialing *#06# as well as in setting> about. Although the IMEI which is written under battery is quite ligit which I checked through IMEI.info
I dont have EFS back type of anything. What should I do now?
Click to expand...
Click to collapse
if you were in 5.1.1 or 6.0.1 just flash the phone with first build of android version
mean if ther stock rom for 5-2016 android 6.0.1 and 10-2016 android 6.0.1 go for 5-2016 so you can root easy later beacause sometimes new firmware hard to find good root
this is link for the rom
http://www.sammobile.com/firmwares/download/70878/N910SKSU2DPD6_N910SSKC2DPD6_SKC/
you shoud sign in to download or you can search in the net for this rom N910SKSU2DPD6_N910SSKC2DPD6

J500fn no service

Hi guys, I'm italian and sorry for my english.
My sister has a Galaxy J5 J500FN 6.0.1 brand H3G and I have to repair it.
The problem is:
-NO SIGNAL (prohibition symbol on status bar)
The Symptoms are:
-No calls. It says no network.
-No emergency calls! It says "turning on radio..." but close call and doesn't work
-IMEI is ok (in settings and with *#06#)
-Check online if my IMEI is locked, but it is ok
-In settings/device info/SIM Radio signal OFF
-In settings/mobile network/Network mode (LTE/3G...) is locked. I've no possibility to change the default mode to others
-In settings/mobile network/carriers (in italian is "Operatori di rete") Find Network doesn't start.
-In settings/mobile network/carriers (in italian is "Operatori di rete") Automatic selection doesn't start.
Resolution attempts:
-*#0011# ServiceMode, says NO SERVICE. I try a lot of solutions but nothing work (3 times back, 1, Q, 0000 doesn't work) MAIN MENU doesn't
appear. I don't find other keys online...
-Wipe cache
-Wipe data/factory reset
-flash with ODIN last firmware 6.0.1, same situation
-flash with ODIN last firmware 5.1.1, same situation
-root 5.1.1 with cf-autoroot, same situation.
-I've bought a new Antenna circuit from eBay (complete panel with chrome frame and camera lens)...correctly installed but doesn't work.
-I try to install "Network" apk (by philipp mangelow), in 5.1.1 doesn't start, in 6.0.1 start and i see TURN ON RADIO button but doesn't
work. LTA/3G....network selection is locked to default.
As Freddy Mercury sang: I'm going slightly mad...
Please, tell me possible solutions to solve my nightmare!
Thanks in advance
Luca

lucav881 said:
Hi guys, I'm italian and sorry for my english.
Please, tell me possible solutions to solve my nightmare!
Thanks in advance
Luca
Click to expand...
Click to collapse
Try to install a custom rom, since data isn't a problem for you and since you already rooted it as I can see from the above. If you will succeed I think your sister would love more a custom rom to crapwiz

lucav881 said:
As Freddy Mercury sang: I'm going slightly mad...
Please, tell me possible solutions to solve my nightmare!
Thanks in advance
Luca
Click to expand...
Click to collapse
Did you test other sim in the phone?(can be a sim problem)
Did it this from the begining or it worked before?
The phone can be network locked and you need by a unlock code!?
You are the first owner or the phone is second hand?
A custom rom can be a fix but you should try to flash via ODIN a stock rom from other country for your phone tipe(j5ooFN)

Thanks for your replies
Answering you, I tried 3 different SIM cards from different carriers but same problem.
This is a phone bought new directly from my sister.
This problem appears suddenly when it was 5.1.1.
During my tests official 6.0.1 OTA update become but the problem remained.
I will try to install official ROM from other country
I will try to install a custom ROM... Do you recommend using a custom TW ROM or an AOSP ROM?

lucav881 said:
Thanks for your replies
Answering you, I tried 3 different SIM cards from different carriers but same problem.
This is a phone bought new directly from my sister.
This problem appears suddenly when it was 5.1.1.
During my tests official 6.0.1 OTA update become but the problem remained.
I will try to install official ROM from other country
I will try to install a custom ROM... Do you recommend using a custom TW ROM or an AOSP ROM?
Click to expand...
Click to collapse
Try Lineage OS 13 by Koloses it's the most stable custom rom by now, but to install that you need to be on lollipop firmware 5.1.1 and to have the latest twrp 3.0.2 by nick verse, make all wipes except sdcard and usb-otg then flash rom and gapps and reboot

I downloaded all necessary files for these 2 attemps:
1. Official ROM for other countries, e.g. ITV and XEO (my current ROM are HUI)
2. Back to 5.1.1 then TWRP + Lineage OS 13 + Gapps
I will try!

lucav881 said:
I downloaded all necessary files for these 2 attemps:
1. Official ROM for other countries, e.g. ITV and XEO (my current ROM are HUI)
2. Back to 5.1.1 then TWRP + Lineage OS 13 + Gapps
I will try!
Click to expand...
Click to collapse
After first boot I suggest you also to flash the add ons like kernel update, screen mirroring fix but first see if your phone works again

Ok thanks!
I just download also these files!

lucav881 said:
Ok thanks!
I just download also these files!
Click to expand...
Click to collapse
Did you succeed?

Yesterday unfortunately I did not have time but today during the lunch break I start the tests and tonight I go on!

Actually I've Lineage OS on but same situation... no signal and Service State (on settings/SIM info) Voice: Radio signal disabled / Data: Radio signal disabled
IMEI ok
No calls
No emergency calls

I try *#*#4636#*#*
Info
Ping
GSM signal: radio signal disabled
Turn ON radio signal button: doesn't work...

lucav881 said:
I try *#*#4636#*#*
Info
Ping
GSM signal: radio signal disabled
Turn ON radio signal button: doesn't work...
Click to expand...
Click to collapse
Maybe because you have to use H3G firmware only to get it to work but I don't know man

In all my previous attempts I have always used H3G firmware (HUI)
Now I was on 5.1.1 and as suggested I tried Lineage 13.
To have another time stock 6.0.1 TW I've only to wipe and flash with odin? I can try other country ROM...
If I give up and return the phone to my sister, at least the interface is the same as before my intervention and she does not panic
However, I thank you for your help!

lucav881 said:
In all my previous attempts I have always used H3G firmware (HUI)
Now I was on 5.1.1 and as suggested I tried Lineage 13.
To have another time stock 6.0.1 TW I've only to wipe and flash with odin? I can try other country ROM...
If I give up and return the phone to my sister, at least the interface is the same as before my intervention and she does not panic
However, I thank you for your help!
Click to expand...
Click to collapse
What an irritating situation! Wish you make it mate

I am having the same issue with a galaxy j5 sm-j500g. Cannot turn on the radio. I think the issue was to flash the TWRP, because before that, the phone was working fine. I did exactly the same as you, did a software update and a downgrade, but it did not work. The only way that worked for me was doing this, (in this order):
1. Flash the latest firmware.
2. Flash the TWRP and root the phone.
3. Do a factory reset and clear the cache.
4. Flash an early version of the software (1st version of the 6.1 firmware)
It took like 30 minutes to boot the firts time, but my phone got signal. I was really happy but after 12 hours I got the same issue.. the same message: "no network connection".
I will try other ways and see if they work.

Hi and thank you for reporting your experience!
I Tried to flash 5.1.1, 6.0.1 several times but for me signal never start to work.
My sister told me that the first time he gave the problem, for a while it has come back to work and then it does not work anymore.
In my many network searches, I saw a Russian youtube video that shows how to heat up a little chip (2mm x 2mm) and re-sold it to reset the radio signal

did u fix it?? i have same prb

Hi, only solution for this problem, for me, was changing phone.... Changing only antenna chip doesn't solve problem...

Same problem here Bro. I flashed 5.1 and 6.0 tryed combination file, root, no signal at all, when try emergency call say " Trying turn radio on" Same situation, same problem and same sitiation: No solution!