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S6 not recognizing SIM card (No Service)

After installing a custom ROM on my galaxy s6 it would no longer recognize my SIM card. I did wipe every option in TWRP recovery before flashing the ROM which might have something to do with the issue. The phone states "No SIM Card - No Service" in the top left of the lock screen, it also wont let me call any numbers to edit things in the phone. I have done some research and it sounds like I have wiped the sim and lost the IMEI/EFS data and therefore no longer have access to my sim. I was wondering if there was any possible fix or should I just send it off to Samsung to get repaired?

Did you back up the EFS partition, and put it somewhere safe? If not, you have a paperweight.
Repair won't be covered under warranty.
Sent from my SM-G920F using Tapatalk

Unfortunately I didn't back up the EFS partition. Situation is looking bad. :l

Try dialnig *#06# and see does it shows IMEI and sn, alo try *#0011# select stack 1 and check whether IMEI is OK, or NG.
Also what does it say in phone settings under baseband? Do you have mobile networks menu in settings?
You can try Smart Switch emergency initialization with sn of the phone if IMEI is ok (it will install latest stock fw for your phone) and see if that helps.

When I typed in "*#06#" The SN number was shown however the IMEI number was not. When I typed in "*#0011#" There was nothing but blank spaces separated by grey lines, I tried selecting row 1 however nothing happened. My base band version is "Unknown" listed under settings. I do however have the network settings listed in settings. In Smart Switch when I try to run the device initialization it states that my s6 "doesn't support initialising". I have flashed three different downloads of the stock rom to my phone using ODIN and have had no luck with any of them.

well Smart Switch always says that S6 is not supported, but initialization can be done anyway, just dont connect the phone until it asks you to do so, instructions below:
http://forum.xda-developers.com/galaxy-s6/help/how-to-smart-switch-emergency-t3383448
What is your model anyway, do you know which region fw was originaly on the phone, and which sv rev is shown in the download mode?
does in recovery mode says anything about DRK?

Unfortunately Smart Switch says that "'SM-G920F' does not support initialing. Please contact out service center." Even when I have entered the correct S/N and device model, as well as not plugging in the phone. My device model is the SM-G920F. I don't know the original region FW that was originally on the phone, however it was purchased in the UK and that is where I am have been ever since I bought the phone. The SWREV is: "B:3 K:2 S:2" in download mode. I currently have TWRP recovery installed so is there a place for me to search for the DRK in TWRP? Or should I re-flash the stock recovery using Odin?

that is weird, I reinitialized my g920f many times without any issue. DRK error is usually shown in stock recovery. does the phone boots up with stock fw, and are you using any custom kernel?

i got the same problem when I flashed xtrolite and alexis custom ROM on my S6, both ROM after flashing I got no service.
But I did a full stock backup in TWRP.

baseband unknown means that there is a problem with modem part of fw. and I dont know what fw you flashed. you said that you tried to flash stock, but it doesn`t work, but a little more details would maybe make a difference, like which fw, and what exactly is happening, what does about the phone menu says.
So far, since baseband is unknown I would try to flash modem fw with odin (for exact fw that is in the phone). before that usb settings should be set to CP, by dialing *#0808#
or if you decide tu run custom fw, you can always try asking in that rom thread, maybe someone already had issues like that with that rom and fixed them, or the developer of that rom can help fix it.

Boot your s6 to download and flash stock rom via odin from samsung it maybe work

Finding the correct firmware to fix soft-bricked phone.

Hello,
I'm trying to fix my soft bricked phone with this error (no quotes):
"dm-verity verifiation failed..."
I've already soft and factory reset the phone to no avail, as it still will not boot past the Samsung logo. Googling the problem has told me that flashing the original firmware with Odin should fix it, but after hours of searching I still cannot determine what firmware I need to download and use. Reading some of the threads here supposedly i can use firmware that shares my carrier and country but I cannot find the correct combination on any site.
Country: US
Phone: S7 (G930F) - On the recovery mode screen the full designation is G930FXXU1BPH6
Carrier: T-Mobile
Version 6.0.1
Does anyone know exactly where I can find useable firmware for the phone? Everything I see online (like sammobile for example) just has the firmwares for other countries.
Before the bootlock my phone was rooted if it matters.

Vhozite said:
Hello,
I'm trying to fix my soft bricked phone with this error (no quotes):
"dm-verity verifiation failed..."
I've already soft and factory reset the phone to no avail, as it still will not boot past the Samsung logo. Googling the problem has told me that flashing the original firmware with Odin should fix it, but after hours of searching I still cannot determine what firmware I need to download and use. Reading some of the threads here supposedly i can use firmware that shares my carrier and country but I cannot find the correct combination on any site.
Country: US
Phone: S7 (G930F) - On the recovery mode screen the full designation is G930FXXU1BPH6
Carrier: T-Mobile
Version 6.0.1
Does anyone know exactly where I can find useable firmware for the phone? Everything I see online (like sammobile for example) just has the firmwares for other countries.
Before the bootlock my phone was rooted if it matters.
Click to expand...
Click to collapse
The G930F is a primarily European device, so a different region than the US.
The firmware version you have provided is an old version of Marshmallow on T Mobile Poland. The fact that it's Poland doesn't really matter it's still EU region.
Now heres the important part....T Mobile in Europe do not use all of the same bands as T Mobile US so although you can flash any firmware for Europe your phone will not work 100% in the US
So first of all flash with either a nougat firmware for United Kingdom T Mobile or Untied Kingdom nougat undranded (BTU). From Sammobile.
I don't advise going straight to Oreo because there may be a fix for older nougat firmware from EU region to work perfectly in US. Once you upgrade firmware you cannot downgrade.
Once your phone is up and running you just need to look on the forum of how to get a G930F device working perfect on US networks.

Galaxy J7 2015 wipe system using ODIN ?

good evening all,
yesterday i've installed a custom ROM over a custom ROM which was installed previously on my J7 2015 phone and now my phone can' boot up, i can't see the bootlogo and can't access to the recovery mode i can only reach the download mode, i've tried to boot it in safe mode but unfortoneitly didn't work.
i am asking if there is anyway to wipe the phone system using PC (odin or something) in order to fix the system crash that caused my problem and install a stock rom properly.
thanks.

moha.tigha said:
good evening all,
yesterday i've installed a custom ROM over a custom ROM which was installed previously on my J7 2015 phone and now my phone can' boot up, i can't see the bootlogo and can't access to the recovery mode i can only reach the download mode, i've tried to boot it in safe mode but unfortoneitly didn't work.
i am asking if there is anyway to wipe the phone system using PC (odin or something) in order to fix the system crash that caused my problem and install a stock rom properly.
thanks.
Click to expand...
Click to collapse
Whatever you do, DO NOT USE THE "NAND ERASE ALL" OPTION IN ODIN.
It will only damage your device. I don't even know why that option is there, I have never seen a scenario where that option has ever helped anyone. Everyone that has ever used it only ended up with a non-repairable device.
Yes, you can try finding the firmware for your specific model number of J7 then flash it using Odin.
If your device is an international(non-carrier branded) device, there will be a list of available firmware for your model number, each firmware on the list is for different regions/countries/carriers, you will need to find the correct firmware for your region/country that has the correct three letter region/carrier code for your carrier in your country.
If you don't know your three letter region/country/carrier code, do a Google search for:
"Region code for (your country) (your carrier)"
For example, for my device, I would search for:
"Region code for USA(my country) StraightTalk(my carrier)"
Once you find the list of available firmware for your device, find the most up to date firmware that has the same three letter region/country/carrier code that you need.
Then flash the firmware via Odin.
Or, you can even try using Samsung SmartSwitch on PC, it has a couple of "somewhat" automated troubleshooting/recovery processes that might repair your device depending on what got corrupted.
Sent from my SM-S767VL using Tapatalk

After FLASING Stock Rom on Samsung Galaxy S7 the device REBOOT after " NO COMMAND "

After FLASING Stock Rom on Samsung Galaxy S7 the device REBOOT after " NO COMMAND "
My device is SAMSUNG GALAXY S7 (G930F)
1. I installed TWRP (twrp-3.2.3-0-herolte.img) via ODIN ver. 3.14 .
2. I had make format all via TWRP.
3. I installed SUPERUSER (BETA-SuperSU-v2.71-20160331103524)
4. I installed NO-VERIFY-OPT-ENCRYPT (no-verity-opt-encrypt-3.1)
5. I installed via ODIN the STOCK ROM of my country and region (COSMOTE-GREECE).
- The device after the succefull install (via ODIN) reboots and after erasing shows (in blue screen) the message "NO COMMAND" or "ERROR" and reboots.
- After reboot doing always the same procedure.
- Any help will be avaible because i been using this phone for my work.

george_1234 said:
My device is SAMSUNG GALAXY S7 (G930F)
1. I installed TWRP (twrp-3.2.3-0-herolte.img) via ODIN ver. 3.14 .
2. I had make format all via TWRP.
3. I installed SUPERUSER (BETA-SuperSU-v2.71-20160331103524)
4. I installed NO-VERIFY-OPT-ENCRYPT (no-verity-opt-encrypt-3.1)
5. I installed via ODIN the STOCK ROM of my country and region (COSMOTE-GREECE).
- The device after the succefull install (via ODIN) reboots and after erasing shows (in blue screen) the message "NO COMMAND" or "ERROR" and reboots.
- After reboot doing always the same procedure.
- Any help will be avaible because i been using this phone for my work.
Click to expand...
Click to collapse
Use Odin to install the latest firmware for you country, then use CF-Auto root, do not use SuperSU it no longer works.

george_1234 said:
My device is SAMSUNG GALAXY S7 (G930F)
1. I installed TWRP (twrp-3.2.3-0-herolte.img) via ODIN ver. 3.14 .
2. I had make format all via TWRP.
3. I installed SUPERUSER (BETA-SuperSU-v2.71-20160331103524)
4. I installed NO-VERIFY-OPT-ENCRYPT (no-verity-opt-encrypt-3.1)
5. I installed via ODIN the STOCK ROM of my country and region (COSMOTE-GREECE).
- The device after the succefull install (via ODIN) reboots and after erasing shows (in blue screen) the message "NO COMMAND" or "ERROR" and reboots.
- After reboot doing always the same procedure.
- Any help will be avaible because i been using this phone for my work.
Click to expand...
Click to collapse
You installed SuperSU at some point. Your Knox efuse is already tripped.
1. Flash your latest Oreo stock firmware and reboot. Do not touch the system anymore. If you don't want to root then you're done.
If it doesn't boot, wipe cache from stock recovery. Sometimes stock ROMs flashed from Odin don't boot until you do it.
If you see No Command, hold power and tap volume up once to bring up the menu.
2. Enable developer options, go to dev options and enable OEM unlock. Your bootloader is now unlocked.
3. Flash the latest TWRP through Odin
4. Reboot to TWRP and KEEP SYSTEM READ ONLY. Swiping to allow modifications will trip dm-verity in the stock ROM
5. (recommended but optional) Disable forced encryption. This requires wiping the internal storage. Mandatory for AOSP.
6. Wipe cache
7. Flash the latest Magisk from topjohnwu's GitHub
8. Reboot. If you don't have Magisk Manager installed already, download it from topjohnwu's GitHub.
9. Open Magisk Manager and let the initial setup complete.
10. Your device is now properly rooted with a modern, open source, systemless implementation.

Ok... i am done all of this (I install the update of Greece (COS) rom from sammobile) but the device cant found network (i cant make calls) but the IMEI shows up regularry in seetings.
With CHECK IMEI i found a code for my phone that is SM-G930FZDAOMN .
The last three digits (OMN) maybe is from vodafone in Italy because the phone came from this country.
I download the right ROM from sammobile for this, but i cannot install it via ODIN. (sboot.bin FAIL).
Any ideas ?

george_1234 said:
Ok... i am done all of this (I install the update of Greece (COS) rom from sammobile) but the device cant found network (i cant make calls) but the IMEI shows up regularry in seetings.
With CHECK IMEI i found a code for my phone that is SM-G930FZDAOMN .
The last three digits (OMN) maybe is from vodafone in Italy because the phone came from this country.
I download the right ROM from sammobile for this, but i cannot install it via ODIN. (sboot.bin FAIL).
Any ideas ?
Click to expand...
Click to collapse
Perhaps you need to register your carrier manually in network settings. Try cleaning your SIM card.

What do you mean ? How i can clean my sim card ?

george_1234 said:
What do you mean ? How i can clean my sim card ?
Click to expand...
Click to collapse
sboot.bin FAIL>>>> means you are trying to flash the wrong firmware.
This is the firmware for your device ....HERE.....
Greece unbranded (EUR) open to all networks.
Not registering on network with Stock Firmware, is a network provider problem, not a firmware problem.

Τhe same ...
Sboot fail...

george_1234 said:
Τhe same ...
Sboot fail...
Click to expand...
Click to collapse
SamFirm Tool, takes firmware direct from Samsung servers.
1. Extract from zip file
2. Run as admin, SamFirm application.exe
3. Leave everything as default
4. Model is SM-G930F (type exactly like that)
5. Region is EUR or COS (which ever firmware you want)
6. Hit check "update"
7. Hit "download"
8. Allow to download and decrypt.
9. 5 files, place in correct place in Odin, (use odin 3.13 not 3.14)
10. Only 1 CSC file needs to be used.
11. You know how to flash so can do the rest yourself?
Samfirm is attached to this post.

ok...
The EUR rom is on.
- But "NOT PHONE SERVICES ALLOWED"
- I check IMEI ... not stolen ...
- #*78# not working at all.

george_1234 said:
ok...
The EUR rom is on.
- But "NOT PHONE SERVICES ALLOWED"
- I check IMEI ... not stolen ...
- #*78# not working at all.
Click to expand...
Click to collapse
Ok, is the phone locked to a network?
Try manual Network selection in settings?
Try a different SIM card
This error is a problem with the SIM card or Network Provider (your mobile account).

I try ...
No solution ...

Is there a posibility to lock the device for Greece Providers ?

george_1234 said:
Is there a posibility to lock the device for Greece Providers ?
Click to expand...
Click to collapse
No
If the firmware is working then the problem is with the Sim card or network.
What network are you using?

Cos
(cosmote)
I alleady installed the right firmware
but still " NO PHONE SERVICES ALLOWED".

Ι try a sim card that is not registering at any network because is very old and not in use any more.
I clear cache from device app telephone and the same from card app.
Then i use my new sim from cosmote.
Well working for 2g and 3g but only for HSPA+ mode.
When i try for 4g/3g/2g and modile data lost the signal and never find it again. Only by the same way.
I put the new sim on XIAOMI MI A3 and 4g works fine.
I noticed that the device getting very warm with no reason and the battery from 14% goes down at once. This is very strange because i change the battery 6 months ago..
Do you thing is from motherboard because i am thinking to change that too ?

george_1234 said:
I noticed that the device getting very warm with no reason and the battery from 14% goes down at once. This is very strange because i change the battery 6 months ago..
Do you thing is from motherboard because i am thinking to change that too ?
Click to expand...
Click to collapse
George, you never mentioned this in your first post!
If you have messed about changing batteries (or if a "repair" shop did it) then yes it can be all sorts of hardware problems. The phone is not designed to be opened once it leaves the factory. Many users have reported problems when people change the battery.
It would be cheaper to buy a new S7 second hand as a new mother board would cost the same and there is no guarantee the problem would be fixed.
I repair Samsung phones and they are VERY difficult to repair without the correct equipment. The phones (as with iPhone) are very sensitive to any type of tampering.
I'm sorry I can't help you any further.

george_1234 said:
Cos
(cosmote)
I alleady installed the right firmware
but still " NO PHONE SERVICES ALLOWED".
Click to expand...
Click to collapse
Try taking your phone to a repair shop, perhaps your SIM card slot is damaged. And next time use Magisk instead of SuperSU, it's no longer reliable since 2.77

Can't flash firmware other than the onw that came stock

I have a Galaxy A51 (SM-A515F) and I tried to change my csc from OJM_MID to OXM_BTU, but whenever I flash it correctly a few things happen:
1. "starting Android" is in Russian
2. the default language is Russian
3. Russian bloatware
4. and when I check the csc it's OXM_SER (Russian)
5. And when I reflashed to OJM_MID it's now OJM_XSG (UAE)
if my stock firmware was multi csc OJM can I only flash firmware from the group?
and is there a reason why flashing firmware with BTU csc is somehow converted into Russian?
Note: the site I used to get the firmware was [ samfw.com ]

Update: the phone has been boot looping / freezing constantly even before flashing a new firmware so it's pretty much dead. no need to help me anymore.
Im planning on getting the A52s 5G

Hello please help me my uncle just gave me his Samsung galaxy A51 when he got a new phone and I just found out that the phone is rooted I've been researching and trying to unroot it but it doesn't work I asked my uncle and he said he didn't root the phone but when I use root checker it says no root installed something like that but when I check the status of the phone in settings it says custom instead of official and I can't use Samsung pass cos it says my phone is rooted I can't use my banking apps also please help me anyone even netflix is not installing