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Phone does not connect to Network (started after being stuck at samsung logo)

Hi everyone,
I rooted my note and was using Jon ROM V3 for the last 3 months. Never had any malicious apps and my phone was working as usual.
Yesterday I took my phone and see that it is stuck at Samsung logo (an hour ago it was working fine). Tried reset and re-flashed ROM but no luck.
Later through download mode i flashed Official Indian Firmware(I live in India). Now I by passed the logo screen and the phone shows full signal bars but not able to connect to carrier network.
(tried all basic work out like removing battery/sim and re-inserting to phone and boot up)
I pressed power key and it did not show the power menu , it directly switched off mobile.
I rooted again with Philz kernel and flashed JON ROM. Still i see that my phone is not able to connect to any network. Also I observe that even here on this ROM when i press power key it directly turns off.
This is weird. I thought my IMEI was wiped off but im lucky to see that its still there.
I need your help. Im without my phone for the last 2 days now.
-
Jonathan

Note - I find that my IMEI number has been changed (to some generic IMEI 004999010640000) after i flashed the official firmware !!!! that's why it is not connecting to any network.
Someone please help me.

How did you flash the official firmware?
was it a tar file or a zip? I mean did you use odin?

chickoo.t90 said:
How did you flash the official firmware?
was it a tar file or a zip? I mean did you use odin?
Click to expand...
Click to collapse
It was a tar file The official Indian firmware I got from sammobile

either a glitch or you selected by accident clear efs.
anyways without efs backup hard to recover emei.
Do you get the simcard enter pinscreen on boot? If you dont then its not imei, if you do then you need someone like cvxcvx, search to fix it. That or Samsung

chickoo.t90 said:
How did you flash the official firmware?
was it a tar file or a zip? I mean did you use odin?
Click to expand...
Click to collapse
baz77 said:
either a glitch or you selected by accident clear efs.
anyways without efs backup hard to recover emei.
Do you get the simcard enter pinscreen on boot? If you dont then its not imei, if you do then you need someone like cvxcvx, search to fix it. That or Samsung
Click to expand...
Click to collapse
No I do not enter pin for simcard. I see my imei has been changed to 004999010640000. I tired fixing one problem and got onto another.
I guess there is no way other than sending my device to Samsung !
Anyways I appreciate your help. Thanks

jonastro said:
No I do not enter pin for simcard. I see my imei has been changed to 004999010640000. I tired fixing one problem and got onto another.
I guess there is no way other than sending my device to Samsung !
Anyways I appreciate your help. Thanks
Click to expand...
Click to collapse
You have a so called "developer IMEI". If you didn't safe your EFS then there is no real chance to restore it yourself.
There is a member (cxlcxl) who has hardware and can restore the original IMEI remotely.
But you still can use your device. Try to change the Sim Pin in the settings: you can use the same Pin for old and new (this is easier for me because sometimes I forget the new number).
After this the network connection should come back.
My workaround in my Pristine Custom Rom: one different jar-file that doesn't have the checks on startup from my old XXLSC dump. With this it works completely normal: Sim and Pin are always recognized from startup. I'm using this for many months now.

ThaiDai said:
You have a so called "developer IMEI". If you didn't safe your EFS then there is no real chance to restore it yourself.
There is a member (cxlcxl) who has hardware and can restore the original IMEI remotely.
But you still can use your device. Try to change the Sim Pin in the settings: you can use the same Pin for old and new (this is easier for me because sometimes I forget the new number).
After this the network connection should come back.
My workaround in my Pristine Custom Rom: one different jar-file that doesn't have the checks on startup from my old XXLSC dump. With this it works completely normal: Sim and Pin are always recognized from startup. I'm using this for many months now.
Click to expand...
Click to collapse
Thanks. BTW I jus gave my phone now to Samsung service center. They said its easy for them to restore my original IMEI and they charged me 150Rupess (3 Dollars) :good:

Really? Just $3

jonastro said:
Thanks. BTW I jus gave my phone now to Samsung service center. They said its easy for them to restore my original IMEI and they charged me 150Rupess (3 Dollars) :good:
Click to expand...
Click to collapse
sweet!

nokiamodeln91 said:
Really? Just $3
Click to expand...
Click to collapse
Aha , yes not joking.

Galaxy Tab & Retail Mode

So I made the mistake of purchasing a Galaxy Tab A (SM-T550) from someone on craigslist. It turns out it's locked in Retail Mode. I've tried all the 5444 passwords and such to unlock it with no luck. I downloaded Odin and flashed it with the appropriate firmware...and no factory reset doesn't work (it's locked by the MDM)....What can I do? Is there any possible way to remove the retail mode? Please help, I'm somewhat technical so I'll try anything.

Same model, same problem.
Did you ever manage to figure this out? I got the exact same thing from clearance at Sears. Every password I've found does not work. Loading a stock firmware with Odin ends up doing nothing as well. I'm at a loss of ideas now.

rhosyn18 said:
So I made the mistake of purchasing a Galaxy Tab A (SM-T550) from someone on craigslist. It turns out it's locked in Retail Mode. I've tried all the 5444 passwords and such to unlock it with no luck. I downloaded Odin and flashed it with the appropriate firmware...and no factory reset doesn't work (it's locked by the MDM)....What can I do? Is there any possible way to remove the retail mode? Please help, I'm somewhat technical so I'll try anything.
Click to expand...
Click to collapse
See my post here for the solution: help-remove-retail-mode-samsung-tab-s2-t3344468/page2#post73101688

Confusing galaxy note 5!

I bought a second hand galaxy note 5, on the back cover of the phone the model is written SM-N920C but in download mode is written SM-N920d ! Nevertheless when I check the model at "setting/about the device" the model was SM-N920I
The problem started when my note 5 was flashed with venom rom then I accidentally formated all system files so the phone stuck in Android logo, I tried to flash the phone using Odin and SM-N920c but Odin said FAILED just when I click start. Now the phone is off for the battery is dead and it couldn't be charged , please help me to find the right flash and is there any way to flash it without download mood?

Use Kies and do an emergency recovery. It'll also be able to determine the actual model number. You probably didn't update the bootloader when usong Venom or something. Usually you want to update to the official marahmallow and then flash after that.

Turbine1991 said:
Use Kies and do an emergency recovery. It'll also be able to determine the actual model number. You probably didn't update the bootloader when usong Venom or something. Usually you want to update to the official marahmallow and then flash after that.
Click to expand...
Click to collapse
Thanks for your comment, I did that already but kies does not support emergency recovery for Note 5 SM-N920c!

I've used it once on my 920c when I initially messed something up. You may need to invoke download mode. Turn the phone off and hold home, volume down and power.
Oh, and there's a modern version of kies which works for modern Samsung phones only.
Did you install a custom recovery immediately after rooting? Always do this first.

Mohannad 14 said:
I bought a second hand galaxy note 5, on the back cover of the phone the model is written SM-N920C but in download mode is written SM-N920d ! Nevertheless when I check the model at "setting/about the device" the model was SM-N920I
The problem started when my note 5 was flashed with venom rom then I accidentally formated all system files so the phone stuck in Android logo, I tried to flash the phone using Odin and SM-N920c but Odin said FAILED just when I click start. Now the phone is off for the battery is dead and it couldn't be charged , please help me to find the right flash and is there any way to flash it without download mood?
Click to expand...
Click to collapse
N920d or N9200?
In your case, I would go with what is mentioned in the download mode since the back glass can be replaced with another model and ROM flashing can alter model # sometimes.
PS: you need to be sure that it was an original Note 5, not just a copy. I'd recommend taking it to the nearest service center to have it checked out.

Turbine1991 said:
I've used it once on my 920c when I initially messed something up. You may need to invoke download mode. Turn the phone off and hold home, volume down and power.
Oh, and there's a modern version of kies which works for modern Samsung phones only.
Did you install a custom recovery immediately after rooting? Always do this first.
Click to expand...
Click to collapse
How to do a custom recovery? Thanks for your help my friend.

RazorMC said:
N920d or N9200?
In your case, I would go with what is mentioned in the download mode since the back glass can be replaced with another model and ROM flashing can alter model # sometimes.
PS: you need to be sure that it was an original Note 5, not just a copy. I'd recommend taking it to the nearest service center to have it checked out.
Click to expand...
Click to collapse
I went with what is mentioned in the download mode which is N920d but I didn't find this firmware at any site?

Mohannad 14 said:
I went with what is mentioned in the download mode which is N920d but I didn't find this firmware at any site?
Click to expand...
Click to collapse
Because that firmware does not exist.
It's either 920C or 920CD (for dual-sim) or 9200 for Chinese models.
The first two will have similar firmwares but the 9200 uses different one.
Have you verified exactly which model it is? What does Kies mention when you connect?

RazorMC said:
Because that firmware does not exist.
It's either 920C or 920CD (for dual-sim) or 9200 for Chinese models.
The first two will have similar firmwares but the 9200 uses different one.
Have you verified exactly which model it is? What does Kies mention when you connect?
Click to expand...
Click to collapse
Thanks for your help, Yes, it is SM-N920D and it really confusing! do you think that this phone is fake?

Mohannad 14 said:
Thanks for your help, Yes, it is SM-N920D and it really confusing! do you think that this phone is fake?
Click to expand...
Click to collapse
As per my search on google, the n920D is Docomo variant.
I haven't been able to find the stock firmware anywhere as of yet.
Flash a custom recovery for your variant (TWRP>others) and then flash a custome ROM that is compatible with 920D.
There must be some on XDA itself.

RazorMC said:
As per my search on google, the n920D is Docomo variant.
I haven't been able to find the stock firmware anywhere as of yet.
Flash a custom recovery for your variant (TWRP>others) and then flash a custome ROM that is compatible with 920D.
There must be some on XDA itself.
Click to expand...
Click to collapse
Thanks a lot. I appreciate your great efforts my friend. The problem still the same, no stock firmware for N920D

Note 8 SM-N950N Korean version stuck in boot loop

Hi guys? pls help me, SM-N950N Korean version, before had frp lock I flashed combo file bootloader 3, then flashed stock 5 files with home_csc, and got boot loop, recovery information here https://ibb.co/mJRcHK
tnx in advance.
In another forums ppl are saying to install TWRP and to do format and wipe, but it is not possible to flash TWRP with OEM ON and FRP ON

Have you tried using Samsung Kies to try and restore your device? That should work

iceepyon said:
Have you tried using Samsung Kies to try and restore your device? That should work
Click to expand...
Click to collapse
Finally someone has replied thanks for your advice, I fixed 2 days ago, forgot to close the thread.

Anvar2005 said:
Finally someone has replied thanks for your advice, I fixed 2 days ago, forgot to close the thread.
Click to expand...
Click to collapse
How did you manage to fix your issue?

Anvar2005 said:
Finally someone has replied thanks for your advice, I fixed 2 days ago, forgot to close the thread.
Click to expand...
Click to collapse
how did you fix that ?

Anvar2005 said:
Hi guys? pls help me, SM-N950N Korean version, before had frp lock I flashed combo file bootloader 3, then flashed stock 5 files with home_csc, and got boot loop, recovery information here https://ibb.co/mJRcHK
tnx in advance.
In another forums ppl are saying to install TWRP and to do format and wipe, but it is not possible to flash TWRP with OEM ON and FRP ON
Click to expand...
Click to collapse
ANY samsung Stuck on Logo SOLVED by Flashing 5 File
BL
AP
CP
CSC
UserDATA
This fixed the Problem 1000000...%
Tested by Sireal (GSM Developer)

HI everyone I purchased a note 8 which was rooted using Magisk. i tried to unroot it but didnt know exactly the device model as it showed SM-N950F in the settings but when i opened it in Download mode, it showed me that device model is SM-N950N. I tried to flash stock firmware of SM-950F but it didn't work despite many efforts. Then I tried SM-950N Korean Sku version and it worked. My device was unrooted but its one IMEI is shown while other displays unknown. I can use only one sim, the other sim is not working. Any solution please.

Help with download mode Samsung Galaxy Note 8 Dual SIM 64GB SM-N950F korean

Hello all . I have problem with note8 . bought it few days ago , owner did wipe the phone thru recovery wipe data etc after that the phone normally turned on .
so i checked it and all worked without issue . turned off the phone then the guy removed hes simcard .
when i got home i put my own sim into it (same network as the guy i bought it from ) turned on and now all i am getting on the screen is " Please enter Privacy Protection password to unlock .
the previous owner vanished but i checked the imei and its clean .
After googling i found out that its asking for the password because the original sim was removed and the only way to bypass it its to flash it with other rom / firmware .
I got stock firmware corresponding to the model but i cant access download mode on it .
tried volume down + bixby + power no luck
volume down + bixby + power , release power but still holding the vol+bix brings me to screen with options i guess chinese ...
vol up+bix + power brings me to recovery
Can anyone help me with it ?

Try "USB JIG Emulator - Samsung 300K" to get access into download mode

szelingo said:
Hello all . I have problem with note8 . bought it few days ago , owner did wipe the phone thru recovery wipe data etc after that the phone normally turned on .
so i checked it and all worked without issue . turned off the phone then the guy removed hes simcard .
when i got home i put my own sim into it (same network as the guy i bought it from ) turned on and now all i am getting on the screen is " Please enter Privacy Protection password to unlock .
the previous owner vanished but i checked the imei and its clean .
After googling i found out that its asking for the password because the original sim was removed and the only way to bypass it its to flash it with other rom / firmware .
I got stock firmware corresponding to the model but i cant access download mode on it .
tried volume down + bixby + power no luck
volume down + bixby + power , release power but still holding the vol+bix brings me to screen with options i guess chinese ...
vol up+bix + power brings me to recovery
Can anyone help me with it ?
Click to expand...
Click to collapse
Try second last option.. Version information.see what it says..
Tbh that looks like a clone and not a real samsung
Sent from my SM-N950F using Tapatalk

vash_h said:
Try second last option.. Version information.see what it says..
Tbh that looks like a clone and not a real samsung
Sent from my SM-N950F using Tapatalk
Click to expand...
Click to collapse
Attached picture below with all the info .
Lets say that it is clone but it is still an android and it should let me turn on download mode ...
The way it starts up and all the boot screens look i dont see any things that may point out to a clone .
But i checked the serial number online and its legit .
I think someone flush wrong firmware into it and now its acting strange

szelingo said:
Attached picture below with all the info .
Lets say that it is clone but it is still an android and it should let me turn on download mode ...
The way it starts up and all the boot screens look i dont see any things that may point out to a clone .
But i checked the serial number online and its legit .
I think someone flush wrong firmware into it and now its acting strange
Click to expand...
Click to collapse
First your phone is a galaxy s8 sm-G950F
Which imei number did you check the one on back of phone or when you dial *#06# in dialer to check?
I would check the imei from *#06# (not the serial number).
Download Phone Info Sam app from play store. See if the imei matches and that you have a exynos soc.
And yes you'll get a download mode and that Chinese letters is most likely your download mode options. Which might mean you got a pretty good fake galaxy s8.
As I know you can't flash sm-G9500 (snapdragon soc) onto a Sm-G950F (exynos soc). So don't know where the Chinese language popped up from or where you can change the language for download mode.
Check out the galaxy s8 forums for any info.

Not sure what's going on here.first screenshot is common for China phones, which is the base for all China cloned phones.
Second screenshot belongs to a samsung s8 phone.
But your title says note 8.
Either you are confused or the phone is confused.
Sent from my SM-N950F using Tapatalk

BluePhnx said:
First your phone is a galaxy s8 sm-G950F
Which imei number did you check the one on back of phone or when you dial *#06# in dialer to check?
I would check the imei from *#06# (not the serial number).
Download Phone Info Sam app from play store. See if the imei matches and that you have a exynos soc.
And yes you'll get a download mode and that Chinese letters is most likely your download mode options. Which might mean you got a pretty good fake galaxy s8.
As I know you can't flash sm-G9500 (snapdragon soc) onto a Sm-G950F (exynos soc). So don't know where the Chinese language popped up from or where you can change the language for download mode.
Check out the galaxy s8 forums for any info.
Click to expand...
Click to collapse
HI Hi am wondering if you could help with my Galaxy Note 8
I am able to install the firmware using ODIN without any errors on download mode but after ODIN is finished the phone turns off and does not boot.
I have taken the phone to a repair shop as well and they have confirmed that there is no hardware issues,
My model number is SM-950F , basically stuck on download mode

Yashfauuu said:
HI Hi am wondering if you could help with my Galaxy Note 8
I am able to install the firmware using ODIN without any errors on download mode but after ODIN is finished the phone turns off and does not boot.
I have taken the phone to a repair shop as well and they have confirmed that there is no hardware issues,
My model number is SM-950F , basically stuck on download mode
Click to expand...
Click to collapse
Try getting into recovery mode and do a factory reset.
Or
In Odin use all 4 files AP, CP, BL, AND CSC (use the CSC file NOT the home-CSC ). (Try checking Nand erase all.)
Also you can do both if you want too.
I wonder if you need to re-partition your phone?
I would take the phone back to the service shop you took it too and tell them to get it working. I find it hard to believe they will tell you it's not a hardware fault when they can't get the phone to boot up! If they cant get it to boot they need to give you a new motherboard.
How did they check the phone without the phone booting up? Isn't that there first test to see if the phone starts up to home screen?

BluePhnx said:
Try getting into recovery mode and do a factory reset.
Or
In Odin use all 4 files AP, CP, BL, AND CSC (use the CSC file NOT the home-CSC ). (Try checking Nand erase all.)
Also you can do both if you want too.
I wonder if you need to re-partition your phone?
I would take the phone back to the service shop you took it too and tell them to get it working. I find it hard to believe they will tell you it's not a hardware fault when they can't get the phone to boot up! If they cant get it to boot they need to give you a new motherboard.
How did they check the phone without the phone booting up? Isn't that there first test to see if the phone starts up to home screen?
Click to expand...
Click to collapse
No luck turning the phone on recovery mode only can use download mode and i have tried the same files with the Nand erase all, the same thing .. Odin installs all the files without any errors but does not boot up after installation is finished.
The service shop said they checked components on the motherboard and there is no damage or no IC has been damaged.
What do you suggest i do next?

Yashfauuu said:
No luck turning the phone on recovery mode only can use download mode and i have tried the same files with the Nand erase all, the same thing .. Odin installs all the files without any errors but does not boot up after installation is finished.
The service shop said they checked components on the motherboard and there is no damage or no IC has been damaged.
What do you suggest i do next?
Click to expand...
Click to collapse
Take it back to the shop and have them install the firmware.

BluePhnx said:
Take it back to the shop and have them install the firmware.
Click to expand...
Click to collapse
I just came from the shop and they have tried to install the same firmware but still doesnt work

Yashfauuu said:
I just came from the shop and they have tried to install the same firmware but still doesnt work
Click to expand...
Click to collapse
Then you have a bad motherboard!
If they cant get it to boot then it is a bad motherboard and they need to replace it!