Database Users

[HELP] X on top of signal bars! No service

Hi Youngers!
I got a friend's Y that doesn't have any signal or service with a working SIM. It only displays an X on top of the empty signal bars. I configured it's APN, and flashed another modem , but it's still doesn't work. Any help will be appreciated.

HolloWX said:
Hi Youngers!
I got a friend's Y that doesn't have any signal or service with a working SIM. It only displays an X on top of the empty signal bars. I configured it's APN, and flashed another modem , but it's still doesn't work. Any help will be appreciated.
Click to expand...
Click to collapse
Try some troubleshooting. Test his sim on another phone and see if it works there.
Is he on a custom rom? Creeds Rom 3.4 had a bug where you cant see the signal even though it has a signal. Can he still send messages even when signal bar is X?
Also, APN wont do anything for the signal, its only for mobile internet browsing with your carrier. Hmmm... are you talking about surfing through your carrier? or basic services like calls and texts?

glennlevi said:
Try some troubleshooting. Test his sim on another phone and see if it works there.
Is he on a custom rom? Creeds Rom 3.4 had a bug where you cant see the signal even though it has a signal. Can he still send messages even when signal bar is X?
Also, APN wont do anything for the signal, its only for mobile internet browsing with your carrier. Hmmm... are you talking about surfing through your carrier? or basic services like calls and texts?
Click to expand...
Click to collapse
Thanks for replying! It's running creed's v2. When you try to place a call it says "Mobile Network not Available". I tried his SIM card on an unlocked Atrix 4G and it made a call successfully. Texting doesn't work either. He said when he had this problem he took it to some unlock/repair shop and they failed to state what exactly was causing this.

HolloWX said:
Thanks for replying! It's running creed's v2. When you try to place a call it says "Mobile Network not Available". I tried his SIM card on an unlocked Atrix 4G and it made a call successfully. Texting doesn't work either. He said when he had this problem he took it to some unlock/repair shop and they failed to state what exactly was causing this.
Click to expand...
Click to collapse
try going to airplane mode then switch back

leodasal2 said:
try going to airplane mode then switch back
Click to expand...
Click to collapse
If all else fails, go back to stock rom or try another rom
(Though I suggest latest stock rom with merruk kernel and superuser opened)

glennlevi said:
If all else fails, go back to stock rom or try another rom
(Though I suggest latest stock rom with merruk kernel and superuser opened)
Click to expand...
Click to collapse
leodasal2 said:
try going to airplane mode then switch back
Click to expand...
Click to collapse
I flashed the ROM below, after i flashed it, booted up then i installed merruk 2.0 final. Did the airplane mode, but it still doesn't work. The APN looks fine. I really don't know what's causing this.
S5360B_UTKI3_ZTAKI3_UTKI3
Brazil
based on: S5360BUTKI3_S5360ZTAKI3_S5360BUTKI3_HOME.tar.md5
ro.build.date=Thu Sep 22 13:27:09 KST 2011
ro.build.version.release=2.3.5
Included CSCs:
ZTA only (Claro)
Included languages:
UT = en,es,pt

Your phone is network locked or something like that I guess.
Best way to get it solved is to post your query in this thread:
http://forum.xda-developers.com/showthread.php?t=1647703
Doky73 will surely help you out

I advise to flash this pack: S5360B_UTLC2_ZTOLC_UTLC1 (open Brasil)
Flash all 3 part (PDA, MODEM, CSC)
If it does not help, then send me your bml15.img.SAVE (made by Galaxy Toolbox)

hey pal i also encountered this kind of problem before after patching Creeds ROM. What i did was I reflash the rom with stock Galaxy Y via ODIN or after the first successful boot of selected customize ROM. then you will need to apply the CSC depending on what network your country has. like mine i choose either from SMA/GLB/XTE. just dial #272* IMEI code. I hope this will help.:good:

[Q] G900F Network registration problem after flashing

Hi I have international version of S5 G900F. I flashed the phone with UK BTU stock rom. Now the problem is I cannot connect to the Network.
I tried going to Settings->More Networks -> Network Operators -> Select automatically . It took 5-10 mins to search but cannot connect.
Sim is not locked as it was working before I flashed the stock rom. also I read somewhere in internet that once the phone is region unlocked, it is permanently unlocked to use any other country sim. I don't know the original region of my phone but I bought it in Uk from 3rd party dealer not from any carrier.
I can think of two thing at the moment. It should be either regional locked again, but it does not prompt any thing to activate or enter pin or anything like that. or it should be wrong modem.
Is there a way to find if the phone is region locked ?
and is there a way to find correct region of the phone ?
the label on the box was removed so I cannot find from the box as well.
Thanks in advance.

I still haven't fixed this problem. Could someone suggest how to fix?

I've attached some screenshots with my phone info.
first image shows NETWORK:UNBLOCKED and IMEI Certi: PASS
-> I think this means, the phone is not blocked by network, and IMEI certificate has passed so it's not stolen or lost claimed phone.
another screenshot is the Firmware and CSC code/country information,
-> this means, this phone is build to sell in UK, so UK sim should unlock the regional lock.
Also the phone was working fine before I installed stock rom which I dowloaded from sammobile.
in the sceenshot, one of the network is connected but it says emergency call only because it cannot register to the network.
It is not sim lock also, because when I put T-mobile sim it does not ask for pin to unlock also.
what is wrong here. any idea guys? xda supposed to be the biggest android forum and samsung s5 is one of the most popular phone at the moment, isn't there anyone who have similar problem and solved? or atleast give some reason this cannot be fixed at all.

does the TMobile sim work? does it register with the network? If yes, then call the provider (of the other sim) and ask what's going on. Maybe you have a broken sim?

blesio said:
does the TMobile sim work? does it register with the network? If yes, then call the provider (of the other sim) and ask what's going on. Maybe you have a broken sim?
Click to expand...
Click to collapse
I've tried with Orange sim, and it still cannot register to the network. When I put the orange sim, it pop up a dialogbox asking to choose a network provider, there was two options, T-mobile and orange. So it is detecting the sim, but it cannot register.
And also, I tried my sim in another phone, and my sim works in another phone without any problem.

Did you try to flash the firmware again, and then after that restore factory defaults?

blesio said:
Did you try to flash the firmware again, and then after that restore factory defaults?
Click to expand...
Click to collapse
Yes I did, still it didn't work. I emailed samsung customer service with the problem, and they asked me to restore factory defaults.
I did that again but didn't work.
I tried one custom ROM as well. same problem in that rom.

You're rooted? If yes then there might be problem with the modem part of the ROM, can you install the official one part ROM and try with that?

blesio said:
You're rooted? If yes then there might be problem with the modem part of the ROM, can you install the official one part ROM and try with that?
Click to expand...
Click to collapse
I've installed stock rom several times, and several different versions( from here: http://www.sammobile.com/firmwares/1/?model=SM-G900F&pcode=0 ). Rooted several times, installed modem.bin files several times from many custom rom/ stock rom. None of them worked. I tried installing modem.bin when not rooted as well. And all the attempt failed.
I did everything I could possibly think of , Then I posted the question in the forum.

You have the IMEI ??!? Or it is lost?? Then only per efs-backup…
Or sim is broken…
Gesendet von meinem SM-G900F

lwiss said:
You have the IMEI ??!? Or it is lost?? Then only per efs-backup…
Or sim is broken…
Gesendet von meinem SM-G900F
Click to expand...
Click to collapse
I have imei , and sim is working fine, as I tested my sim in another phone.

uktel3315 said:
I have imei , and sim is working fine, as I tested my sim in another phone.
Click to expand...
Click to collapse
I'm having the same problem, but with G900H. I have stock firmware, rooted and everything's working fine until suddenly, I have no network. I restart the phone and get network again but only for a couple of minutes.
Sent from my SM-G900H using XDA Free mobile app

Any update?

XanoZuke said:
Any update?
Click to expand...
Click to collapse
Sry XanoZuke, I could not do anything to fix this, so I returned the phone and got another handset. I now have Exynos Octa-core version. Found snapdragon version is more power efficient. My phone gets heated very quickly.

uktel3315 said:
Sry XanoZuke, I could not do anything to fix this, so I returned the phone and got another handset. I now have Exynos Octa-core version. Found snapdragon version is more power efficient. My phone gets heated very quickly.
Click to expand...
Click to collapse
Don't worry, I found out that the motherboard was water damaged (the irony of life....), so a bought an LG G3.
Regarding the Exynos chip, I'm never buying anything exynos ever again. The performance is not as solid as Snapdragon and it gets heated really fast. Still, thanks for your reply! ?
Sent from my LG-D855 using XDA Free mobile app

uktel3315
Click to expand...
Click to collapse
So sad case remain unsolved, Got almost the same issue, Flashed 1st and last official firmware and custom rom without success NO NETWORK SIGNAL. No IMEI - Null regitered 15 zeros no efs backup etc.
Model : SM-G900S
ROM: XtrStoLite

edreab86 said:
So sad case remain unsolved, Got almost the same issue, Flashed 1st and last official firmware and custom rom without success NO NETWORK SIGNAL. No IMEI - Null regitered 15 zeros no efs backup etc.
Model : SM-G900S
ROM: XtrStoLite
Click to expand...
Click to collapse
have you found a solution yet? i have the exact same problem and have tried the same solutions as you listed...

have you found a solution yet? i have the exact same problem and have tried the same solutions as you listed...
Sorry i end up selling the phone as is..

Same deal
My g900f has no mobile services sims fine

I have the same problem.
Cannot connect to network after flashing new ROM. Since then I tried about 10 different original roms and couple custom roms. Number of different MODEMs and BOOTLOADERs but with no joy. SIM card works fine in different phone.
Also I tried to load different CERT files and QCN with Z3X Box but that didn't help either.
I've tried *#0011# command here are results:
with LTE/WCDMA/GSM auto-connect:
imgur.com/i69HCBM
with WCDMA only:
imgur.com/QPbvKHG
and GSM only:
imgur.com/8InhQWQ
It seems that GSM is not working at all.
At this stage I run out of ideas and probably gonna get rid of the phone as it is or use it as pimped-out ipod touch
(sorry for messed up links but I can't post to outside sites yet)

No phone calls?

Hey guys, I come here very often and now I'm going to have to open this thread because I've seen absolutely no posts about my problem..
My S6 Edge+ is currently unable to make any calls and I don't know why..:crying: the strange part is that I can still send text messages and use my SIM's mobile data... Another weird thing is that whenever I reboot the phone, my WiFi passwords are forgotten..
Can any one help me? I'm currently running android 6.0.1 and I am considering downgrading it to 5.0.1 to see if it solves the issue...

Still needing help..
No one?? I really need some help since I've tried 4 different roms and modems ano nothing seems to work....

Have you wiped everything and then flashed a stock rom?
/CK

CyberDrag0n said:
Hey guys, I come here very often and now I'm going to have to open this thread because I've seen absolutely no posts about my problem..
My S6 Edge+ is currently unable to make any calls and I don't know why..:crying: the strange part is that I can still send text messages and use my SIM's mobile data... Another weird thing is that whenever I reboot the phone, my WiFi passwords are forgotten..
Can any one help me? I'm currently running android 6.0.1 and I am considering downgrading it to 5.0.1 to see if it solves the issue...
Click to expand...
Click to collapse
Which variant do you have and which MM firmware did you flash? Check your modem, imei, network operator etc and provide that info here.
Also wifi password IMO related with
Code:
ro.securestorage.support=true
this line in build.prop. I would suggest you to add this line under 'ADDITIONAL_BUILD_PROPERTIES' in build.prop but assume you havent rooted your device. If have, add it.
Powered by Elektrik

I've downgraded to 5.1.1 and it didn't work, I have the international version of the s6 edge plus and now I'm looking for a new ROM to test to see if I can solve it.. I've checked my imei in two different websites and on imei.info it comes clear, but the other site gives me a blacklisted warning, which makes me think since I bought it online second hand... it probably was reported stolen or lost and now it's blocked... which ise rather inconvenient. .
If I go to SIM Card Status it says "Not Available" everywhere, but on imei information it says my imei and on IMEISV the value is 01. It's network unlocked and right now I'm about to flash a new ROM, probably stock..

Hello, I have the same problem at boot after I receive the call when making a call nothing remains of numbering you have a solution? thank you cordially guillaume

Hi guys, I know this is a really old thread but I'm here just to say that the problem was with the IMEI, it was blacklisted..
I changed it with a friend and then everything worked fine..
Thanks for you help mates!

CyberDrag0n said:
Hi guys, I know this is a really old thread but I'm here just to say that the problem was with the IMEI, it was blacklisted..
I changed it with a friend and then everything worked fine..
Thanks for you help mates!
Click to expand...
Click to collapse
how to check for imei blacklisted ?

natrajshekarj said:
how to check for imei blacklisted ?
Click to expand...
Click to collapse
You can go to imei.info and there's a paid check.

Moto E4 Qualcomm Sprint (Perry) No Service Problem

Hello all,
I recently unlocked my Moto E4 Qualcomm Sprint Version (Perry) and flashed Lineage OS 14.1. The OS is working but I am getting no service, and when I first set up the phone it say "Insert Sim Card" even though there is no sim tray. I have tried other ROMs but it the same problem for them also. Some things I have noticed is that there is no radio and Airplane mode keeps switching to in even when I turn it off. Also when I attempt to call people it says turn of Airplane mode even though it is off. I have searched some other forums on this topic since i am not the only one with this problem but none of the solutions worked for me. I have also tried creating new APNs and tried some of the LTE fixes but those also didn't work for me. Is there anyway to fix this "No Service" problem?
Thanks!

Stix97 said:
Hello all,
I recently unlocked my Moto E4 Qualcomm Sprint Version (Perry) and flashed Lineage OS 14.1. The OS is working but I am getting no service, and when I first set up the phone it say "Insert Sim Card" even though there is no sim tray. I have tried other ROMs but it the same problem for them also. Some things I have noticed is that there is no radio and Airplane mode keeps switching to in even when I turn it off. Also when I attempt to call people it says turn of Airplane mode even though it is off. I have searched some other forums on this topic since i am not the only one with this problem but none of the solutions worked for me. I have also tried creating new APNs and tried some of the LTE fixes but those also didn't work for me. Is there anyway to fix this "No Service" problem?
Thanks!
Click to expand...
Click to collapse
- sim card located under battery
- no known/proven fix at present
- return to stock to restore functionality

Stix97 said:
Hello all,
I recently unlocked my Moto E4 Qualcomm Sprint Version (Perry) and flashed Lineage OS 14.1. The OS is working but I am getting no service, and when I first set up the phone it say "Insert Sim Card" even though there is no sim tray. I have tried other ROMs but it the same problem for them also. Some things I have noticed is that there is no radio and Airplane mode keeps switching to in even when I turn it off. Also when I attempt to call people it says turn of Airplane mode even though it is off. I have searched some other forums on this topic since i am not the only one with this problem but none of the solutions worked for me. I have also tried creating new APNs and tried some of the LTE fixes but those also didn't work for me. Is there anyway to fix this "No Service" problem?
Thanks!
Click to expand...
Click to collapse
Try this build
https://www.androidfilehost.com/?w=files&flid=284911
Only flash the rom and gapps at first.
Edit: it worked for this user, should work for you also
https://forum.xda-developers.com/showpost.php?p=78055219&postcount=3

Jason M. said:
Try this build
https://www.androidfilehost.com/?w=files&flid=284911
Only flash the rom and gapps at first.
Edit: it worked for this user, should work for you also
https://forum.xda-developers.com/showpost.php?p=78055219&postcount=3
Click to expand...
Click to collapse
Holy crap this actually worked! Thank you so much! I have a question though. I'm guessing this is the only ROM that Sprint works with right now?

Stix97 said:
Holy crap this actually worked! Thank you so much! I have a question though. I'm guessing this is the only ROM that Sprint works with right now?
Click to expand...
Click to collapse
Yes until he post his sources and let other people build from them

Stix97 said:
Holy crap this actually worked! Thank you so much! I have a question though. I'm guessing this is the only ROM that Sprint works with right now?
Click to expand...
Click to collapse
I didn't post it just to screw with everyone. I'll have trees posted for the devs here to update their roms ASAP I just have other priorities atm. Bear with me please. It's just a matter of missing firmware symlinks so if anyone can figure that out before I post the changes to my trees, feel free.

Jason M. said:
I didn't post it just to screw with everyone. I'll have trees posted for the devs here to update their roms ASAP I just have other priorities atm. Bear with me please. It's just a matter of missing firmware symlinks so if anyone can figure that out before I post the changes to my trees, feel free.
Click to expand...
Click to collapse
No problem bro you do your work the community needs you

Jason M. said:
I didn't post it just to screw with everyone. I'll have trees posted for the devs here to update their roms ASAP I just have other priorities atm. Bear with me please. It's just a matter of missing firmware symlinks so if anyone can figure that out before I post the changes to my trees, feel free.
Click to expand...
Click to collapse
Another happy customer: https://forum.xda-developers.com/mo...perry-lte-fix-challenge-t3858512/post78076210

I tried flashing Jason M.'s rom on my XT1766 (boost) but I couldn't get my GSM SIM cards to work.
I tried with FreedomPop, Google Fi, and Simyo (a European carrier) with different behaviors.
The FreedomPop and Google Fi SIM cards are not detected and the Mobile network settings are greyed out.
The Simyo (European carrier) SIM card is detected, after unlocking it with its PIN, I got the following message "SIM card is locked. Emergency call only". In the other hand the Mobile network settings are working, but can't add new APNs, message "Access Point Name settings are not available for this user".
Thank you
Screenshots can be found below:
tinypic.com/r/jhtx0l/9
tinypic.com/r/69oz1u/9
tinypic.com/r/27ywf94/9

golouse said:
I tried flashing Jason M.'s rom on my XT1766 (boost) but I couldn't get my GSM SIM cards to work.
I tried with FreedomPop, Google Fi, and Simyo (a European carrier) with different behaviors.
The FreedomPop and Google Fi SIM cards are not detected and the Mobile network settings are greyed out.
The Simyo (European carrier) SIM card is detected, after unlocking it with its PIN, I got the following message "SIM card is locked. Emergency call only". In the other hand the Mobile network settings are working, but can't add new APNs, message "Access Point Name settings are not available for this user".
Thank you
Screenshots can be found below:
tinypic.com/r/jhtx0l/9
tinypic.com/r/69oz1u/9
tinypic.com/r/27ywf94/9
Click to expand...
Click to collapse
Any chance you know how to how to run get.prop in a terminal and post me the output? I'd like to see your apns from stock also.

Jason M. said:
Any chance you know how to how to run get.prop in a terminal and post me the output? I'd like to see your apns from stock also.
Click to expand...
Click to collapse
Hi Jason,
Thank your quick response, this is the output. Regarding the default APNs, there are no APNs, it is empty. (tinypic.com/r/jhtx0l/9)
Thank you

@golouse first off, I asked for that while running stock. That is from LineageOS. Second, sorry I didn't specify, next time please copy and paste the output into a text file and post it that way or post it on Hastebin.com and post a link. Please edit that post and remove the getprop because all that makes things load slower for some users. i also should have mentioned you might want to remove your phone number and anything else like your imei.
Edit: stock apns are in system/etc/apns_conf.xml
Edit2: just copy the whole apns_conf.xml and upload it

Jason M. said:
@golouse first off, I asked for that while running stock. That is from LineageOS. Second, sorry I didn't specify, next time please copy and paste the output into a text file and post it that way or post it on Hastebin.com and post a link. Please edit that post and remove the getprop because all that makes things load slower for some users. i also should have mentioned you might want to remove your phone number and anything else like your imei.
Edit: stock apns are in system/etc/apns_conf.xml
Edit2: just copy the whole apns_conf.xml and upload it
Click to expand...
Click to collapse
Thank you for the heads up, I will try to get the APNs and getpop output today.

golouse said:
Thank you for the heads up, I will try to get the APNs and getpop output today.
Click to expand...
Click to collapse
This is the stock getprop output pastebin.com/PQrBRDxi
and the apns_conf.xml can be found at www.dropbox.com/s/bdl6pqf6nargj5u/apns-conf.xml?dl=0
Thank you

golouse said:
This is the stock getprop output pastebin.com/PQrBRDxi
and the apns_conf.xml can be found at www.dropbox.com/s/bdl6pqf6nargj5u/apns-conf.xml?dl=0
Thank you
Click to expand...
Click to collapse
Cool. Thanks. I'll see what I can do asap, but If you have an XT1766 I was under the impression that they were only CDMA capable. You mentioned a European carrier also and I also thought that Europe only had GSM carriers. Where did you purchase your phone? Please correct me if I'm wrong.

Jason M. said:
Cool. Thanks. I'll see what I can do asap, but If you have an XT1766 I was under the impression that they were only CDMA capable. You mentioned a European carrier also and I also thought that Europe only had GSM carriers. Where did you purchase your phone? Please correct me if I'm wrong.
Click to expand...
Click to collapse
Officially the XT1766 is a CDMA phone but it is GSM capable. Squids2 LineageOS 14.1 builds made the phone connecting to GSM networks, calls, and data.
I purchased several XT1766 in the U.S for my family, then installed Squids2's LineageOS 14.1. All of them are currently working in Europe (yes, Europe is GSM only) without problems.
It is just this last phone, I made the mistake of updating stock (NCQS26.69-64-10), rather than wipe it and install LineageOS 14.1 as soon I got it as I did with the other ones.

golouse said:
Officially the XT1766 is a CDMA phone but it is GSM capable. Squids2 LineageOS 14.1 builds made the phone connecting to GSM networks, calls, and data.
I purchased several XT1766 in the U.S for my family, then installed Squids2's LineageOS 14.1. All of them are currently working in Europe (yes, Europe is GSM only) without problems.
It is just this last phone, I made the mistake of updating stock (NCQS26.69-64-10), rather than wipe it and install LineageOS 14.1 as soon I got it as I did with the other ones.
Click to expand...
Click to collapse
Ok, makes sense. I'll try adding your carrier info to the XT1766 in init. I'll post another build later tonight or tomorrow for you to try. I'm pretty sure that's what's needed.

@golouse Try this build
https://www.androidfilehost.com/?fid=11410963190603841787
I figured if squid2's builds worked for your other devices I might as well just make a build with the origional init.moto.cpp and without replacing the stock apns. Like the missing firmware. It should work.
This is not for everyone! It should work for any other GSM users though I guess.
For everyone waiting for sources that work after the recent stock updates with a few other changes I made here you go
https://github.com/JasonM45/android_device_motorola_perry
https://github.com/JasonM45/android_device_motorola_qcom318-32
https://github.com/JasonM45/android_device_motorola_msm8937-common
https://github.com/JasonM45/android_kernel_motorola_msm8937
https://github.com/JasonM45/proprietary_vendor_motorola
Thank you @squid2 and @SeanStar and whoever else chipped in for their original work on the trees!

Thank you for your efforts Jason. I've just installed it but the problem persist, same behavior.

golouse said:
Thank you for your efforts Jason. I've just installed it but the problem persist, same behavior.
Click to expand...
Click to collapse
Might be because of all the system.props that were added. Didn't think about that. I'll make one more build with those reverted to the way squid2 had them. If that doesn't work, there's one more thing I can try but I don't know when I'll have a chance to do that.
Edit: actually, now that I think about it there was a lot more than those system.props added. I'd be better off just using squid2's trees and adding the couple things to make it work after the latest update. That's gotta work. You might need to restore stock before trying it and maybe erase modem data. I'll do that as soon as I get a chance.

S8 plus ussd problems, call forwarding

Hi first post here but not a complete newbie. But this time I'm stuck big time and would appreciate some help.
I've got a s8 plus that recently started playing up. All of a sudden it started not being able to make or receive calls. But I noticed it only happened when the "conditional call forwarding active" message didn't appear when dialing. I figured it had something to do with call forwarding so try to change the settings on supplementary services settings but when I tried to enter the settings an error message appeared "failed to read data" I tried sending the code manually to cancel voice mail *#022# to see if it would work but I got "connection problem or invalid mmi code" so assumed it could be that the phone is trying to check with the network the forwarding settings as the call starts but for some reason it cannot communicate with it as the mmi codes don't seem to working?? (I'm not that knowledgeable in that area) I tried all the fixes online for the "connection problem or invalid mmi" but none work so I flashed the firmware through Odin even tried a few different ones, I've been playing around with Odin for a while so I'm comfortable with it, I even flashed a pit once for a note 4 that was bricked (just saying so you can see I'm comfortable with using it, not an expert just comfortable) but nothing has fixed my problem my phone is a g955fd running pie and one UI with the latest security update. I've read the duos have some issues with this. I've tried other sim cards on my phone from different carriers and the problem is the same and I'm using my sim on a borrowed phone and no problems. I'm assuming the problem goes deeper than the firmware, could this problem be boot loader related? Would a nand erase and reinstalling the boot loader fix it? Everything else works 100%
Someone please help me, the phone I'm borrowing is an apple and every day I have it I feel weaker and dumber, it's like kryptonite.
Sorry for the long post but I've been browsing xda forums for years and I know that you guys always say to share as much info as possible. By the way I've searched and couldn't find a thread about this but it there is one I promptly apologize and just ask for the link to it if not thanks in advanced.

? G935F or G935U exynos vs snapdragon
Way for snapdragon
Flash https://forum.xda-developers.com/galaxy-s8+/development/rom-t3901074 with odin and test with hard factory reset recoery.
After, flash odin last firmware stock sammobile

Thanks
Thanks for your reply deadedge7
As I said my s8 + is a duos g955fd variant and has an Exynos processor, I'm not sure that rooting it would make much of a difference, as to my understanding rooting doesn't really change the boot loader it just allows you to install a custom recovery and roms. Which is not much different to reflashing a stock rom for all intents and purposes , but I might give it a try anyway. I guess that maybe a rom like the one in the thread you shared might give me some more hidden codes access as a root but I'm not sure. I will try to find a root like it for my variant unless you know of one and can point me to it.
Thanks

Hard reset or flash stock software or hardware problem
For iemi best way is root efs with flash twrp best way for /EFS
https://forum.xda-developers.com/android/general/guide-restore-imei-fix-corrupted-efs-t3116217 read only

Bellboy4510 said:
Thanks for your reply deadedge7
As I said my s8 + is a duos g955fd variant and has an Exynos processor, I'm not sure that rooting it would make much of a difference, as to my understanding rooting doesn't really change the boot loader it just allows you to install a custom recovery and roms. Which is not much different to reflashing a stock rom for all intents and purposes , but I might give it a try anyway. I guess that maybe a rom like the one in the thread you shared might give me some more hidden codes access as a root but I'm not sure. I will try to find a root like it for my variant unless you know of one and can point me to it.
Thanks
Click to expand...
Click to collapse
I am facing the same issue. Same variant. latest update April 1st Security Patch. Data and texting work. but can't make or receive calls. Have you found any solutions?

@unbreakabl3
I am facing the same issue. Same variant. latest update April 1st Security Patch. Data and texting work. but can't make or receive calls. Have you found any solutions?
Click to expand...
Click to collapse
No solution so far. I've rooted the phone and install a couple of custom ROMs but still nothing. I'll try and roll back the firmware and see what happens. I'm no expert but I still think it is fixable. If I find a solution I'll post it on this thread. If you find one please share. My solution at the moment is getting a galaxy A50, very comparable performance with the S8 and really cheap.

Bellboy4510 said:
@unbreakabl3
No solution so far. I've rooted the phone and install a couple of custom ROMs but still nothing. I'll try and roll back the firmware and see what happens. I'm no expert but I still think it is fixable. If I find a solution I'll post it on this thread. If you find one please share. My solution at the moment is getting a galaxy A50, very comparable performance with the S8 and really cheap.
Click to expand...
Click to collapse
I'll keep that in mind. Couple of things to note: I don't get the message conditional call forwarding active. I don't think I ever have.
I tried a different carrier SIM card(T-mobile) and it worked (I'm on At&t). I was able to make and receive calls. Even tried an out of country SIM card and received calls. But my At&t SIM works on other phones perfectly. Go figure lol.
The only other reason I can think of is maybe cos it fell a couple of times from the couch. About 1.5ft. New case kept making it slide off.

Install (Phone INFO SAM).apk
check csc if they are all the same operator

deadedge7 said:
Install (Phone INFO SAM).apk
check csc if they are all the same operator
Click to expand...
Click to collapse
Here is the screenshot from the app

unbreakabl3 said:
Here is the screenshot from the app
Click to expand...
Click to collapse
Original missing and DBT and XSG not same
It must be all same
flash stock firmware odin bl ap cp and csc
Install apk phone info sam
Check csc original and all same
After flashing firmware stock, *#243203855# to choose good csc reset and test