Database Users

Please help me I cannot get signal. Unroot.

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I am trying to get back to unroot state on my galaxy s4 i9505. It is running fine and shows I have signal but will not make any connection when trying to connect to Vodafone UK. I am not tlk sure if I need to flash anything with the CSC?? The phone will just not register on Vodafone UK or any other network (it is an unlocked phone) I think j may have flashed the wrong firmware somewhere. I also bought in the UK but suggests otherwise?
Please help me to get back to getting signal and restoring the phone! Its driving me crazy! Please ask me anything else if have any questions. I have my imei number which I haven't shown which links to the label under the battery so that seems to be ok.
Thanks in advanced
Sent from my One using Tapatalk

1. Install Kies 3 and plug in ur phone.
2. Take a look the CSC in Kies 3 (pic 1 attached)
3. Go to Sammobile.com and download the correct firmware for ur device (knowing now ur correct CSC).
4. Unzip it and flash the firmware (.tar file) through ODIN.

mattcops said:
Please see the images attached.
images removed
I am trying to get back to unroot state on my galaxy s4 i9505. It is running fine and shows I have signal but will not make any connection when trying to connect to Vodafone UK. I am not tlk sure if I need to flash anything with the CSC?? The phone will just not register on Vodafone UK or any other network (it is an unlocked phone) I think j may have flashed the wrong firmware somewhere. I also bought in the UK but suggests otherwise?
Please help me to get back to getting signal and restoring the phone! Its driving me crazy! Please ask me anything else if have any questions. I have my imei number which I haven't shown which links to the label under the battery so that seems to be ok.
Thanks in advanced
Sent from my One using Tapatalk
Click to expand...
Click to collapse
I'm sure you thought of this but have you checked your APN Settings?
For Vodafone UK check this link: http://apn-settings.com/uk/vodafone-uk-apn-settings/

Joku1981 said:
1. Install Kies 3 and plug in ur phone.
2. Take a look the CSC in Kies 3 (pic 1 attached)
3. Go to Sammobile.com and download the correct firmware for ur device (knowing now ur correct CSC).
4. Unzip it and flash the firmware (.tar file) through ODIN.
Click to expand...
Click to collapse
I have plugged into kies3 and it does not display any information about my csc? Please could you help?
See attached photo.

Diger36 said:
I'm sure you thought of this but have you checked your APN Settings?
For Vodafone UK check this link: http://apn-settings.com/uk/vodafone-uk-apn-settings/
Click to expand...
Click to collapse
Yes I have checked APN settings, unfortunately still not working
I managed to find a csc by typing *#1234# see attached picture.
So, with the information I have found, would this be the correct firmware for my mobile? slovenia?
http://www.sammobile.com/firmwares/3/?download=30797
Seems to be correct, I may go ahead and flash it. Am i correct I just load into pip on odin and flash?

mattcops said:
Yes I have checked APN settings, unfortunately still not working
I managed to find a csc by typing *#1234# see attached picture.
So, with the information I have found, would this be the correct firmware for my mobile? slovenia?
http://www.sammobile.com/firmwares/3/?download=30797
Seems to be correct, I may go ahead and flash it. Am i correct I just load into pip on odin and flash?
Click to expand...
Click to collapse
You don't need reflash it coz seems to be correct. Try first to:
1. Make a backup of your Internal Memory folders to ur pc.
2. Factory reset ur phone (Settings > Accounts > Back Up and Reset > Factory Data Reset > Reset Device > Delete All/Erase Everything.)
3. Tell me how it worked :fingers-crossed:

Joku1981 said:
You don't need reflash it coz seems to be correct. Try first to:
1. Make a backup of your Internal Memory folders to ur pc.
2. Factory reset ur phone (Settings > Accounts > Back Up and Reset > Factory Data Reset > Reset Device > Delete All/Erase Everything.)
3. Tell me how it worked :fingers-crossed:
Click to expand...
Click to collapse
really appreciate you trying to help Joku, but I have tried factory resetting 3 times now, and still will not register on Vodafone UK What am I doing wrong!! Is it because I have flashed the Vodafone uk firmware instead of the Slovenia version which apparently is what my phone is? (I bought from amazon uk, I thought it would have been uk unlocked)

mattcops said:
really appreciate you trying to help Joku, but I have tried factory resetting 3 times now, and still will not register on Vodafone UK What am I doing wrong!! Is it because I have flashed the Vodafone uk firmware instead of the Slovenia version which apparently is what my phone is? (I bought from amazon uk, I thought it would have been uk unlocked)
Click to expand...
Click to collapse
flashed the slovenia version and still not connecting to Vodafone UK. have I got the wrong baseband?! I really can't think of what to do next and currently left with an expensive brick or a phone which can download apps but can't phone or text!!
Sent from my One using Tapatalk

Still haven't fixed this and left with a phone that's gets no signal and doesn't connect to data apart from WiFi!

mattcops said:
Still haven't fixed this and left with a phone that's gets no signal and doesn't connect to data apart from WiFi!
Click to expand...
Click to collapse
Dial again *#1234# and attach what appears.

Joku1981 said:
Dial again *#1234# and attach what appears.
Click to expand...
Click to collapse
I hope these images help. Let me fill you in on what I have *tried* to do to help.
I have inserted a Vodafone UK contract sim. I have flashed Vodafone firmware and now changed the CSC code to VOD (Vodafone UK... I think) so I just thought my sim card would be working again.... Still shows signal bars but does not connect to network or wireless now... Can it be something to do with my modem???? Does anything stick out to anyone that is wrong???
Just to say my imei no and serial no are still intact I have not lost them or they have not gone to 0... They match to sticker behind battery. I just cannot work out what is wrong
Please help people! I appreciate it! [emoji4]

any help would be appreciated!! it's driving me crazy

please, i am still stuck with this phone!

[Q] Help please! KLTE unlocked rooted on stock fw. Neither SIM can access network

Hi guys,
I think I was messing around where I shouldn't have been and now I have 2 SIMs from 2 different providers down on my unlocked rooted W8. I had moved it back to XtreStoLite successfully and then for some reason I started exploring service codes and I think thats where I killed it. I've completely formatted both drives and reinstalled factory but I'm still getting the same result. The Bell SIM just says Emergency Calls only and then you go into the networking area and it says Insert SIM for network services. The Koodo SIM gets a totally different result as its getting the PUK-locked.
Any wonderful ideas?
Thanks a million.
Tony

Estrongs and CSC folder attached in zip format
Does anyone have any ideas on this? I got the PUK-Unlocked taken care of on one SIM only to end up with the same problems on both SIMs. The SIMs still show as unlocked as per CSC but the status is LIMITED.
I think what I need to do is blow away the CSC so any remaining tainted records are gone.... somehow without breaking the unlock. I guess this doesn't get wiped even when I'm in PHILS and highlighting and formatting everything and then reinstalling factory firmware from SAMMOBILE. I've tried updating Bootloader, Modem and then firmwares several times. I've been to the shop that unlocked my phone and they say well if its not asking for a code its still unlocked. I've talked to the PUK detective at Koodo. I've been to the Bell store only to be sent out the door in a rude manner.
I think what I need to do is reset part of the service code that contains SIM stuff.
Any guru can help me PLEASE???
Below is more descriptive info with screenshots of the issue and my troubleshooting.
Thanks,
Tony
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http://imageshack.com/a/img674/2472/6GqoAA.png

@AltaEgo
Not sure why did you attached the Estrongs folder?
Did you try to flash stock firmware? Are your IMEI and baseband still valid?
And please check the following:
open Dialer, enter *#0011#, Menu, Back item, Menu, Key Input, enter Q0 and OK, wait for some seconds until you get MAIN MENU. Then select DEBUG SCREEN > NAS INFORMATION > MM INFORMATION > capture this screenshot. And then Menu, Back item, MM REJECT CAUSE and also capture screenshot.
Can you show these 2 screenshots?

vndnguyen said:
@AltaEgo
Not sure why did you attached the Estrongs folder?
Did you try to flash stock firmware? Are your IMEI and baseband still valid?
And please check the following:
open Dialer, enter *#0011#, Menu, Back item, Menu, Key Input, enter Q0 and OK, wait for some seconds until you get MAIN MENU. Then select DEBUG SCREEN > NAS INFORMATION > MM INFORMATION > capture this screenshot. And then Menu, Back item, MM REJECT CAUSE and also capture screenshot.
Can you show these 2 screenshots?
Click to expand...
Click to collapse
---------------
Hi vndnguyen,
My IMEI LOOKS ok and my baseband does too but I'm just look at the About Phone>Status .
I'm not sure why I put the estrongs folder in there. Sorry, I was up for many hours straight trying to fix this. I used your Samsung Info folder to try many different codes with no luck. In this situation, you get the no sim error when you try to put a service code in the dialer so its necessary to root the phone and launch them your app. It seeps for whatever reason that the SIM is deregistered and almost not seen at all. One SIM I can get a little bit further than the other. I have tried restoring two different firmwares from Sammobile and also one with Kies, but NO LUCK.
I really hope you can help. I'll be so grateful. Even the provider wasn't helpful.
Thanks very much for your assistance.
Tony
https://www.dropbox.com/s/6q3liiwnqtgdh4a/2014-11-17 16.47.46.png?dl=0
https://www.dropbox.com/s/n554ict5zfj0r60/2014-11-17 16.47.58.png?dl=0
https://www.dropbox.com/s/o7yqtv574i1g7rx/2014-11-17 16.48.15.png?dl=0
https://www.dropbox.com/s/2enowxuhns4c1gn/2014-11-17 16.48.24.png?dl=0
https://www.dropbox.com/s/72ggwip7nztutjz/2014-11-17 16.48.36.png?dl=0
https://www.dropbox.com/s/nkl3l94e5cmdpsf/2014-11-17 16.49.10.png?dl=0
https://www.dropbox.com/s/p72el25pfu8wvcp/2014-11-17 16.50.15.png?dl=0
https://www.dropbox.com/s/yj3s1cobpxhaosy/2014-11-17 16.50.30.png?dl=0
https://www.dropbox.com/s/u1kmncey28iv0cx/2014-11-17 16.50.46.png?dl=0
https://www.dropbox.com/s/jamfcbnhr3va60u/2014-11-17 16.51.09.png?dl=0
https://www.dropbox.com/s/rhqqjfb57b1j1ce/2014-11-17 16.55.48.png?dl=0
https://dl.dropboxusercontent.com/u/100918384/S5-T2Y_NETWORK_ISSUES.zip

https://www.dropbox.com/s/bjlwhikvrhn7zcz/2014-11-17%2020.43.52.png?dl=0
Does anyone have any ideas? I've been down for 7 days now.
Much appreciated.

AltaEgo said:
https://www.dropbox.com/s/bjlwhikvrhn7zcz/2014-11-17%2020.43.52.png?dl=0
Does anyone have any ideas? I've been down for 7 days now.
Much appreciated.
Click to expand...
Click to collapse
According to the screenshots, the problem was that the network consider your phone as a illegal device. The network refuses service either because an ID of your device is not acceptable, or because the device does not pass the authentication check.
So please check:
1- Put your SIM card into another phone to make sure it works fine?
2- Make sure your phone's IMEI is not blacklisted?

vndnguyen said:
According to the screenshots, the problem was that the network consider your phone as a illegal device. The network refuses service either because an ID of your device is not acceptable, or because the device does not pass the authentication check.
So please check:
1- Put your SIM card into another phone to make sure it works fine?
2- Make sure your phone's IMEI is not blacklisted?
Click to expand...
Click to collapse
Thank you. This is very confusing as I got my S5 as new. I spent another 40 minutes with Bell on the phone tonight and they certainly didn't mention anything of the sort. I'll try these and then get back to you.
Thanks!
Tony

Well I've tried reinstalling stock and complying with Knox with no luck. I've tried completely blowing away everything to do with Knox after wiping EVERYTHING and reinstalling appropriate boatloads, kernel, modem.
I'm at Bell now. Gonna ask why the hell I've talked to 3 CRTs on the phone and in another store and Knox WASNT EVEN MENTIONED!
Sent from my SM-G900F using XDA Premium 4 mobile app

If your warrenty is void (knox tripped), you could risk it and try to add all bands to your phone. Maybe it could reset something?
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059

Blazing angel said:
If your warrenty is void (knox tripped), you could risk it and try to add all bands to your phone. Maybe it could reset something?
http://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
Click to expand...
Click to collapse
I got the phone replaced through my smartphone insurance package. Luckily I don't have to pay the normal 150 deductible because my S5 was an insurance replacement and within its warranty. As far as the 0x1 causing warranty to be void, I highly doubt that crap will stand up in court. Because you install a custom recovery to BACKUP your phone for recovery, your warranty is void? That's a loud of sh*t! I think that all of us Samsung customers should put together a petition letter expressing our displeasure with Knox. I mean, it doesn't really do anything for us unless you're with a corporation or you pay for one of the upgraded copies. I can't even figure out how to login to Knox on my insurance replacement but it's there and running.... well it was. lol
I'd really like to find out what happened to this phone before I send it back. I think I might try adding the bands.
Anyone else have any ideas as how to reset the Qualcomms through the service menu. I suspect that this is totally separate from Android and that in here is where I messed something up that tripped up the modem settings so it won't read SIM cards. I want to reset the Qualcomm back to factory defaults.

Need unbranded firmware to edit APN settings for my SM-G900V

Hi,
I was recently traveling in the USA and bought online the Verizon SM-G900 because I thought it was fully unlocked. As it turns, the APN settings are locked, and when I got back to Spain I couldn't edit them to use my domestic carrier.
I first updated the system to Lollipop 5.0 (PB1 version) and then I did a factory reset and flashed VZW_BPB1_ODEX_DEODEX_V9 via Safestrap as I had read somewhere that it would unlock the APN settings (enabling the Deodex settings). No luck. APN settings are still locked --they're grayed out and I cannot add new APN settings.
I tried a few other workarounds --using BuildProp editor, etc-- but none of them seem to work.
I read online that if I use an unbranded firmware (CSC OXA) the APN settings will be unlocked. Is that true? If so, where could I find an unbranded firmware compatible with my unit?
thanks a lot!!!

Is your phone bootloader unlocked (using the recent exploit http://forum.xda-developers.com/verizon-galaxy-s5/development/rd-unlocking-galaxys-s5-bootloader-t3337909)? Maybe try flashing the G900F version of CM13. It won't support CDMA out of box, but I don't know if the network you'll be switching to will require that.
If you aren't bootloader unlocked, then you might have some luck with one of JrKruse's Note 5 ports. I've had some trouble with them working on Verizon (I think because they didn't support CDMA fully at the time), but the APN settings ARE changeable. Don't flash a rom for another variant unless it has been ported - if you're bootloader locked you cannot edit the kernel and it will most likely eat your cat.
I'm not too experienced in this category - these will most likely work, but I'm assuming there's some easier way, I just don't know of one.

Hi,
I'm bootloader locked. The new exploit is for Samsung 15 and mine is Toshiba 11. No luck yet!
I'm kind of new to flashing. Would the rom in the link below work with my G900V?
http://forum.xda-developers.com/ver.../rom-toxicrom-note5-v1-s6-beta-g900v-t3334585
Or perhaps this one:
http://forum.xda-developers.com/verizon-galaxy-s5/development/purenote-5port5-1-1-rom-t3346368
thanks!

Either one of those should work.

Hi,
no luck! I tried both ROMS, but the APN settings are still blocked! I'm probably doing something wrong, so here's what I did:
1) Somewhere along the line my phone got stuck on the Samsung logo, so I flashed the official firmware G900VVRU2BPB1_G900VVZW2BPB1_VZW via Odin
2) I rooted the unit via Odin with the OK3_ROOT_V5 package (using the PB1 kernel)
3) I rebooted into Safestrap, wiped cache, data and system.
4) I flashed VZW_BPB1_ODEX_DEODEX_V9 -- APN settings blocked. See pic below
5) I rebooted into Safestrap, wiped cache, data and system.
6) I flashed ToxicROM Note5 v1/S6 BETA G900V -- APN settings blocked. See pic below.
7) I rebooted into Safestrap, wiped cache, data and system.
8) I flashed Pure_note 5_port_5.1.1 rom -- APN settings blocked.
I'm obviously missing something here, right? Again, I'm new to flashing. The Pure Note rom comes with the stock fw and it might block the APN settings, but I think the Toxic Rom should not block the APN settings and, yet, they're blocked:

cirerita said:
Hi,
no luck! I tried both ROMS, but the APN settings are still blocked! I'm probably doing something wrong, so here's what I did:
1) Somewhere along the line my phone got stuck on the Samsung logo, so I flashed the official firmware G900VVRU2BPB1_G900VVZW2BPB1_VZW via Odin
2) I rooted the unit via Odin with the OK3_ROOT_V5 package (using the PB1 kernel)
3) I rebooted into Safestrap, wiped cache, data and system.
4) I flashed VZW_BPB1_ODEX_DEODEX_V9 -- APN settings blocked. See pic below
5) I rebooted into Safestrap, wiped cache, data and system.
6) I flashed ToxicROM Note5 v1/S6 BETA G900V -- APN settings blocked. See pic below.
7) I rebooted into Safestrap, wiped cache, data and system.
8) I flashed Pure_note 5_port_5.1.1 rom -- APN settings blocked.
I'm obviously missing something here, right? Again, I'm new to flashing. The Pure Note rom comes with the stock fw and it might block the APN settings, but I think the Toxic Rom should not block the APN settings and, yet, they're blocked:
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Click to expand...
Click to collapse
Add a new APN. The Verizon APN will always be grayed out and you won't be able to edit it. Go to APN's, there should be a + sign to add a new one. When you're done typing in the new settings just press the 3 dots and hit save. Once you've added the new APN select it. I usually reboot afterward and everything works.

Hi, thanks for the tip, but the + sign is grayed out --if you take a close look at the attached pics, you'll notice the + sign is unavailable! For some reason, the APN settings are still blocked. I'm probably missing something obvious, I just don't know what it is.

cirerita said:
Hi,
no luck! I tried both ROMS, but the APN settings are still blocked! I'm probably doing something wrong, so here's what I did:
1) Somewhere along the line my phone got stuck on the Samsung logo, so I flashed the official firmware G900VVRU2BPB1_G900VVZW2BPB1_VZW via Odin
2) I rooted the unit via Odin with the OK3_ROOT_V5 package (using the PB1 kernel)
3) I rebooted into Safestrap, wiped cache, data and system.
4) I flashed VZW_BPB1_ODEX_DEODEX_V9 -- APN settings blocked. See pic below
5) I rebooted into Safestrap, wiped cache, data and system.
6) I flashed ToxicROM Note5 v1/S6 BETA G900V -- APN settings blocked. See pic below.
7) I rebooted into Safestrap, wiped cache, data and system.
8) I flashed Pure_note 5_port_5.1.1 rom -- APN settings blocked.
I'm obviously missing something here, right? Again, I'm new to flashing. The Pure Note rom comes with the stock fw and it might block the APN settings, but I think the Toxic Rom should not block the APN settings and, yet, they're blocked:
Click to expand...
Click to collapse
Those roms are made for Verizon only , can not use them on different carriers . I assume this is the reason can not edit apn.( First time probably have to enable gsm bands )
---------- Post added at 06:10 PM ---------- Previous post was at 05:55 PM ----------
alin919 said:
Those roms are made for Verizon only , can not use them on different carriers . I assume this is the reason can not edit apn.( First time probably have to enable gsm bands )
Click to expand...
Click to collapse
Maybe flash one off the Verizon internationals roms ( alliance , phoenix ) . Also you can try because you got nothing to loose (now you can not use the phone ) , http://forum.xda-developers.com/ver...how-to-enable-lte-band-41700-2100-to-t2990105

Thanks, I would definitely like to try those Verizon international roms. I cannot seem to find them online. Any idea as to where to find them?
mmm... did you mean the rom in the link below, for instance?
http://forum.xda-developers.com/ver...enix-rom-9-0-ported-g900v-ported-rom-t3188443
won't it mess with my locked bootloader?

Well, I tried the following ROM http://forum.xda-developers.com/verizon-galaxy-s5/development/bsfreelollipop5-0rombpb1based-t3331541 following all the steps, and the phone rebooted fine... but the APN settings are still blocked! And the default Verizon APN is still there!
Then I rebooted into Safestrap and installed Phoenix 11 rom. I kind of feared it would mess with my locked bootloader and the phone would get stuck in a bootloop, but I rebooted safely. The phone is not bricked! The directions say that "If running previous 5.0 rom flash Phoenix Rom then BOG5 firmware zip", but I'm not sure I should do that because my stock fw is/was PB1. Should I go ahead and try that BOG5 fw or should I try to find the PB1 fw and flash it? The unit seems to be fine without that fw, but maybe I need it anyway.
The APN settings do NOT seem to be blocked under Phoenix: the default Verizon APN is gone and I can use the + sign. However, when I hit save after creating a new APN, the new APN is not listed. I tried that several times, but for some reason new APNs are not saved (or at least I cannot see them).
Do you think I should flash the PB1 fw?

cirerita said:
Thanks, I would definitely like to try those Verizon international roms. I cannot seem to find them online. Any idea as to where to find them?
mmm... did you mean the rom in the link below, for instance?
http://forum.xda-developers.com/ver...enix-rom-9-0-ported-g900v-ported-rom-t3188443
won't it mess with my locked bootloader?
Click to expand...
Click to collapse
Yes , alliance and Phoenix. It won't affect bootloader because they are made for Verizon ( just make sure you download them from here only : http://forum.xda-developers.com/verizon-galaxy-s5/development ) You stated you got Verizon phone. Then in both roms should have galaxy tools so you you might changes to GSM bands. After that need just apn editor maybe.

Thanks again, I tried both Phoenix and Alliance, but I cannot seem to change the GSM band. I'm told to insert the SIM card, but the SIM card is inserted! I used a little app called APN settings shortcut, which allows you to get to the APN settings bypassing the "other mobile networks" menu. Even though the + sign is available, whenever I add a new APN and then hit "save", the new APN is NOT saved, and I cannot use it.
When using the Phoenix rom, I took a look at the Phone properties, and I noticed that I'm still using Verizon's fw (the CSC code is VZW), which probably prevents me from editing the APN settings.
Should I use a non-VZW firmware?

I9505 looses network coverage, how to restore it without restart; HW or SW problem?

Hi, guys. I have a 1 year old I9505. It started loosing network coverage without any reason. It was originally with Touchwiz 5.0.1 when the problem started. I installed Cyanogenmod 13 (Android 6.0.1) to try if the problem is in the OS, everything working, but the problem continues.
I leave it on the table working (with coverage) and some time after that I turn the screen on and I see an "x" over the mobile network indicator and there is no network. Only restart solves the problem, but not every time. Sometimes i keep on restarting the phone in order to get network coverage. I miss phone calls.
I told myself, when restart solves the problem, maybe I can restart the mobile/radio service without restarting the phone. I installed some apps from the play store, which reset the network coverage. No success. When I have coverage, they do reset it and reconnect. But when the coverage is lost (with an ''x''), those apps do nothing!
How can I restart the SIM card module/service?
It is a hardware problem? But if it is, how does a restart sometimes help?
PS: if i toggle airplane mode (when I have the "x" thing), then i cannot turn the airplane mode back off!

Could be your SIM is acting up.

GDReaper said:
Could be your SIM is acting up.
Click to expand...
Click to collapse
Tried with another SIM card, same thing.

Modem
deianr said:
Tried with another SIM card, same thing.
Click to expand...
Click to collapse
What modem version do you use?

qosmio- said:
what modem version do you use?
Click to expand...
Click to collapse
i9505xxuhob7

Tried stock rom from sam mobile.

I was with stock when the problem started.
I suspect the sim card reader.

Bro I mean flash again stock via odin if you know.5th month ago same issue with me.solved after latest firmware fro sam.good luck

i9505xxuhob7 is from a dutch firmware, flash your own country's firmware, the latest if possible. 9 out of 10 this problem will be solved by flashing original firmware as mentioned by other users before me.

OK, I'll try, but it worked 1 year with this firmware. Without any update, it started to make the problem. That's why I don't suspect the firmware it was with during this year.

deianr said:
OK, I'll try, but it worked 1 year with this firmware. Without any update, it started to make the problem. That's why I don't suspect the firmware it was with during this year.
Click to expand...
Click to collapse
Maybe your provider did change something on the network or something happend with your efs directory.
Good luck.

Qosmio- said:
Maybe your provider did change something on the network or something happend with your efs directory.
Good luck.
Click to expand...
Click to collapse
Thanks, man.
Phone has IMEI. I suppose no efs problem.
I changed the SIM card with new original micro-SIM. I've installed the newest modem I've found (again). Still no difference.
There is a difference in the behavior when there is no SIM at all and when there is SIM inserted, but no network.
When it looses network coverage:
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SIM card info app - screenshots:
With normal network coverage:
Lost coverage - SIM card status is "ОК", everything else - not available:
When I take out the SIM card - SIM not detected:
I see that when it looses network coverage, SIM card number is not seen in the app. So maybe it cannot read the SIM card. But SIM status is OK - maybe this is a flag when just SIM is inserted.

deianr said:
Thanks, man.
Phone has IMEI. I suppose no efs problem.
I changed the SIM card with new original micro-SIM. I've installed the newest modem I've found (again). Still no difference.
There is a difference in the behavior when there is no SIM at all and when there is SIM inserted, but no network.
When it looses network coverage:
SIM card info app - screenshots:
With normal network coverage:
Lost coverage - SIM card status is "ОК", everything else - not available:
When I take out the SIM card - SIM not detected:
I see that when it looses network coverage, SIM card number is not seen in the app. So maybe it cannot read the SIM card. But SIM status is OK - maybe this is a flag when just SIM is inserted.
Click to expand...
Click to collapse
You have tried other modem now, did you flash also and try original firmware from your provider so not from xda? If not try that, if not ok try using other sim from friend or someone else other then yours, if that is working then you know something is wrong with your sim, if not i am out of option and it could be your sim reader.
good luck.

Nothing. New SIM, original firm, I even tried this:
http://forum.xda-developers.com/galaxy-s4-att/general/how-to-fix-galaxy-s4-sim-card-removed-t3113480
still doesn't work. Powers up with network, wants my PIN code and a few minutes after that - gone.

deianr said:
Nothing. New SIM, original firm, I even tried this:
http://forum.xda-developers.com/galaxy-s4-att/general/how-to-fix-galaxy-s4-sim-card-removed-t3113480
still doesn't work. Powers up with network, wants my PIN code and a few minutes after that - gone.
Click to expand...
Click to collapse
Sorry to hear that nothing worked out for you, i am afraid that you have a hardware problem.

Upgraded B2017G from 6.0.1 to 7.1.1, calling broken, not sure what to do...

So I've had this phone for a few months but thanks to the mess with the US I wasn't able to get the Nougat update from ZTE's servers through the Gold's System Update. I later found a Nougat image on ZTE's support page, put it on an empty SD card and installed it from Settings>System Update. That went fine. I rebooted, did the setup, installed a few apps and everything seemed great until I tried to make a phone call. The display sits on 'Dialing...' for about 20 seconds with no ringing sound and then the call drops, followed by the signal bars going hollow and a message that I have left my Home network. After 10-20 seconds the signal meter returns to normal and I'm on my Home network again. Calling out aside, SMS works fine and 4G works fine.
Rebooting does nothing, re-seating the sim does nothing and factory resets do nothing. When I go to Phone>Settings>Call Settings>Carrier Settings>Additional Settings a pop-up says "Reading settings..." and then after about 20 seconds I get "Network or Sim card error" and the Data Roaming warning (mentioned above) appears in the Notifications bar. Just trying to get that information off of the card breaks my data connection. I called my carrier and they confirm my account is in order and everything is fine on their end. When I put the sim back into my old phone it works properly and I can make calls and browse, etc. Going to the same >Additional Settings on my old phone, it loads up without the "Network or Sim card error" message. This all seems like a very specific error, that trying to pull my connection or account information from the sim is breaking my connection and causing outgoing calls to crash. This never happened on the Gold under 6.0.1.
In case it's important, I have a 7 Mini Gold but the 7 Mini Gold page does not have an update image on it. I used the update image from the 7 Mini page. I figured the lack of an image on the Gold's support page was an oversight rather than the Gold being so different that it needs its own separate updates. I hope I didn't get that wrong.
Unless someone has some insight into fixing this as-is, right now I think I have to either rollback Nougat (except I haven't found an image of 6.0.1 yet) or install Lineage OS. I think I have all the files I need to flash Lineage, using Tulip from here and the directions found here and the image found here. All comments, even just speculation, are welcome.

What carrier are you on? Do you have the right APN settings? I've had similar on T-Mobile when I'm in a Band12\VoLTE market with a non-VOLTE device. I can get LTE data without issues but the device would not call out because it could not see an active voice network.

pizzaboy192 said:
What carrier are you on? Do you have the right APN settings? I've had similar on T-Mobile when I'm in a Band12\VoLTE market with a non-VOLTE device. I can get LTE data without issues but the device would not call out because it could not see an active voice network.
Click to expand...
Click to collapse
Freedom mobile (Canada).
APN settings match what is listed on their site.
Freedom doesn't appear to offer VoLTE. The problem happens whether VoLTE is switched on or off.

I have a similar problem with a UK model. It doesn't give me the roaming pop up but the rest of the symptoms are the same. Calls drop immediately and calling my number from another phone returns busy signal. The network type preference doesn't work as well. It stays on 4g/3g/2g auto no matter what I select. I think mine is like this because I tinkered with the service menu but I am not sure. On another thread someone suggested to erase modemst 1 and modemst2 partitions in fastboot mode but I can't make it connect in fastboot plus someone said that erase command is blocked. I'm looking for a stock firmware image to re-flash it but it's nowhere to be found...
UPDATE: I've managed to erase the modem partitions with twrp and adb shell but it didn't help. network type preference works now but the phone doesn't connect to the network at all.

After taking a long break from fighting with the Mini I dove back in today. I was able to back-up boot and recovery and then flash twrp recovery. After the phone was stuck on the blue ZTE logo when I tried to start it. I flashed the B12 noverity boot image and now it boots normally. SMS is still fine and calls still drop without connecting, briefly kicking the phone to roaming. While I nosed around in the settings again and compared them to my working phone I noticed something that I'd dismissed before. Under Available Networks everything has "null" beside it. "Null" doesn't show at all in that section when using the same SIM in my other phone.
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I call this a clue. Why I try to Google it I get articles about troubleshooting null SIM cards. I also found this stackoverflow thread and this comment:
https://stackoverflow.com/questions...k-is-on-or-available-or-not-on-android-device
in none of the code above i see a check for whether getNetworkInfo() returned null, which happens according to the docs when the requested network type is not supported.
Click to expand...
Click to collapse
This is probably a different kind of null than the one in my screenshot, but it makes me wonder. Are there any apps on either F-droid or Play that people would recommend that might report what is happening when the phone tries to connect to a tower to make a call?
I'm looking for a stock firmware image to re-flash it but it's nowhere to be found...
Click to expand...
Click to collapse
This index has what looks like B2017G-EU images. Can you use them?
http://files.nwwn.com/android/axon7mini/

Yoqui said:
This index has what looks like B2017G-EU images. Can you use them?
http://files.nwwn.com/android/axon7mini/
Click to expand...
Click to collapse
I'll try them, they look legit. Nothing to lose at this point. My mini is not registering in any network (Emergency calls only). Erasing modemst1 and modemst2 deleted my IMEI and MEID. I've managed to rewrite the IMEI but not the MEID. Flashing a custom rom didn't fix it. The phone is not bricked though so there is hope. I can still use ADB and EDL. There is a way to get the phone in deepflash mode even but I have nothing to flash on it so I haven't tried that yet.
PS: I've emailed ZTE and they are not responding. I think they are seizing support completely.