Database Users

Not Registered on Network

Hi guys,
I recently picked up a used S4 on Craigslist for cheap because the guy "screwed up" using Odin and flashed something that caused his phone to not register on any networks. I figured, what the hell, it's cheap enough and I might be able to restore it. So far I've restored the Rogers firmware over Odin and tried installing a custom rom/recovery too. I'm still getting this problem unfortunately. The IMEI reported with *#06# and in the status screen does match the sticker on the inside of the phone.
So I'm sure everyone's going to suggest that the phone was stolen and the IMEI has been blacklisted. My provider (Fido/Rogers) apparently doesn't care if the IMEI is blacklisted, they'll let it run anyway. I called up Fido anyway (since I'm a Fido customer) and asked them about the IMEI of this phone and they say they don't have any record of anyone calling in reporting it stolen and they don't have an IMEI database so she didn't have much to say about it.
Does anyone have any other suggestions? I've also flashed just the kernel, and I will flash a modem onto it too. I know my SIM card works, and both my SIM card and the last owners SIM cards don't work. I know the radio works because it picks up the emergency signal fine, and the SIM tray isn't damaged because when I put in my Fido SIM the Fido APN's automatically come up, as well as the lock screen goes from "No SIM inserted" to "unregistered SIM." Could my EFS partition be borked? Wifi works and IMEI shows up correctly.
The buyer said he would take the phone back if I can't fix it, but I want to try a bit more before I give up. If anyone has any ideas or suggestions, that would be great. Thanks a lot in advance XDA!
Summary:
-Used S4
-Owner flashed something wrong in Odin
-Gets "Not registered to network" error, unregistered SIM error
-Tried restoring
-Tried new ROM/Recovery
-Carrier says IMEI is fine, also tried directly registering the IMEI to my account
-IMEI is correct in settings/sticker on back of phone
-Wifi/everything else all works

Sounds like it's SIM locked to a different network. Try the the guide here: http://forum.xda-developers.com/showthread.php?t=2285431

MatinatorX said:
Sounds like it's SIM locked to a different network. Try the the guide here: http://forum.xda-developers.com/showthread.php?t=2285431
Click to expand...
Click to collapse
My girlfriend has a Bell sim, which when we insert, gives us the "Please enter unlock code" screen.
My sim does not do that. I know this device is for my carrier, but I figure the easiest way to get this going is to just unlock it and see if the problem persists on other networks.
I've tried that unlock tutorial before. The first time I tried it, when I just got the phone from the previous owner, it said "Golden-backup does not exist" so I couldn't do the restore step of that guide. After Odin-flashing everything and starting over, I can't even get into the UMTS menu anymore! I'll try another restore and give it another go though.
Edit: Another problem. I did a restore again using Odin and notices that it never properly wipes the phone. When I finish flashing, my Wifi still autoconnects on first boot, and every few seconds, a process crashes causing the phone to freeze. Has anyone heard of this kind of problem before?

Quick update:
Managed to Odin-flash it to the earliest firmware I could find for the phone without any crashing or freezing problems. Trying to do the network unlock method mentioned online. It does not work, even though I'm following the instructions to a T. Could it be that my EFS partition is borked and that the NV rebuild can't happen, meaning my radio configuration would also be borked?
Edit: Oh and when I booted up my phone for the first time, the phone was actually ON Fido! But within a few seconds, it went back to "Emergency calls only."

Hmm, that is some odd behavior, and definitely not a carrier lock. Shame it's never that simple to fix.
Not quite the same as your issue, but I lost my ability to make and receive calls after flashing a newer modem on an AOSP firmware. Flashing custom kernels, older modems, the latest stock rom and kernel were no help at all. I tried everything I could think of short of groveling. In the end the only way I got everything working again was to flash the original factory firmware my phone shipped with, factory wipe it from stock recovery, then flash it again. If you've already tried that (and I'm guessing you have), consider contacting Samsung regarding warranty. They've been really good to me in the past, even with second-hand phones.
I can confirm that Odin doesn't clean everything out. In my trials I also noticed that flashing via ODIN without a factory reset presented no setup wizard, caused lots of FC's and left some previous files hanging around.

Sounds like a bad sim tray.
Sent from my SAMSUNG-SGH-I337 using xda premium

make sim fit tighter
graydiggy said:
Sounds like a bad sim tray.
Sent from my SAMSUNG-SGH-I337 using xda premium
Click to expand...
Click to collapse
I had trouble with my handset after it got run over in the street, making it's otterbox earn it's money. The only bad symptom after that episode was Emergency calls only kept recurring.
I cut a tiny square of transparent scotch tape, avoided touching the sticky side, and placed it squarely on the SIM chip's backside, to make it fit the sim slot more snugly. It sounds like you should try stacking two or three layers on your chip as it sounds to be more loose than mine is.

Hi everybody! Thanks for all the help trying to fix it! It ended up being that the guys the previous owner had unlock it used the debug-menu unlock method and my phone was one of the ones that doesn't accept it. Lots of other people complained about similar problems as me in the free unlock method thread. In the end, I paid for the FastGSM USB Unlock method and it fixed the problem.

OH MY GOSH YOU JUST SAVED ME from buying another phone!! THANKS so much.. I added 3 layers of tape on the back of my sim and it works!!! weird.. cause I have the Dual Sim.. and it was the first sim that would not work. the second sim was fine.. anyways.. THANKS SO MUCH!!

No Network

Hi good people, I am facing a problem. Around 8 hours back I tried calling someone but the call didn't connect so I restarted the phone and then I lost the network. I tried reboot, flashed different ROMs (unofficial CM14, cm13 nightly build n MM nougat backup), tried with GAPPS and without GAPPS but the problem is persisting. I even tried swapping the Sim cards before that but of no use. I tried debugging by using *#*#4636#*#* but ping test is failed and also there is "TURN RADIO ON" I believe ideally it should be "TURN RADIO OFF". please have a look at the screenshots. I'm almost dying without making important calls.
Update: Guys I have got it working.. Kindly look into my below posts. Please don't misguide people for small issues.
Thanks

In the screenshot we can also see, GSM SERVICE IS OFF. it stays the same even after clean flashing a new custom ROM.

Got it working. Flashed latest COS ROM file however the situation was still the same. Then I removed sim, switched on airplane mode restarted. After reboot inserted Sim then again restarted n then I got the signal
1. Removed Sim card, switched on airplane mode from both power menu and notification toggle.
2. Restart, inserted Sim card and switched off airplane setting from setting. (Notification toggle and power menu didn't work) then got the network.
Please note I tried with only one sim in sim 1 tray. Later I got the network for 2nd sim as well

Narasimha12 said:
Got it working. Flashed latest COS ROM file however the situation was still the same. Then I removed sim, switched on airplane mode restarted. After reboot inserted Sim then again restarted n then I got the signal
Click to expand...
Click to collapse
Which rom did you flash and what was your method of flashing?
You also said simply flashing didn't work. It was what you did with reboot, aeroplane mode and taking out and reinsert the Sim that worked?

I've had the same problem for almost a month now... and i gave my phone to the service center. They called up to inform me that its a motherboard failure and they'll fix it.. I'll provide further info when I get my phone back (probably in 3-4 days)
P.S I tried almost every method to make it work. So if you couldn't make it work in first 2 days or so, dont waste your time and just give it for the servicing (make sure its in Stock OS so that they dont ask any questions about root xD )

lekhwani said:
Which rom did you flash and what was your method of flashing?
You also said simply flashing didn't work. It was what you did with reboot, aeroplane mode and taking out and reinsert the Sim that worked?
Click to expand...
Click to collapse
I flashed almost every latest ROM. But no ROM got the network back. So as a last resort I flashed COS 12.1 and still didn't get the network. Then I removed both the sims, activated flight mode restarted the device, left it couple of minutes and inserted only one sim in first slot. Holla I got the network. Then everything is back to normal
If u r facing the same problem I would suggest u to activate flight mode n restart. If it doesn't work try by removing sim cards, if it still doesn't work try COS 12.1.

lekhwani said:
Which rom did you flash and what was your method of flashing?
You also said simply flashing didn't work. It was what you did with reboot, aeroplane mode and taking out and reinsert the Sim that worked?
Click to expand...
Click to collapse
Usual procedure of flashing. Wipe cache, dalvik, system and data. Flash ROM + Gapps. Reboot

Try to search in the forum. There is a lot of threads with the same problem with the Zuk Z1. It is a hardware problem.
Enviado desde mi Redmi Note 3 mediante Tapatalk

Your modem and baseband sections may be damaged. Modem structure is hidden under qualcomm structure. To Access and repair those sections, you need to do some modifications. I managed to make my Zuk Z1 worked again with some tweaking. Altering that part of the phone is illegal due to its restricted elements such as IMEI number. That's why I cannot post a tutorial here. İt is not allowed. However, I can help you if you personally contact me. I hope you get your signal back soon.

psyckoze said:
Your modem and baseband sections may be damaged. Modem structure is hidden under qualcomm structure. To Access and repair those sections, you need to do some modifications. I managed to make my Zuk Z1 worked again with some tweaking. Altering that part of the phone is illegal due to its restricted elements such as IMEI number. That's why I cannot post a tutorial here. İt is not allowed. However, I can help you if you personally contact me. I hope you get your signal back soon.
Click to expand...
Click to collapse
Please follow xda rules and don't tell people illegal things where they get in trouble. Keep in mind, that's not an illegal forum

Sure thing but I have already mentioned it. I didn't post anything illegal. So, take it easy.

psyckoze said:
Your modem and baseband sections may be damaged. Modem structure is hidden under qualcomm structure. To Access and repair those sections, you need to do some modifications. I managed to make my Zuk Z1 worked again with some tweaking. Altering that part of the phone is illegal due to its restricted elements such as IMEI number. That's why I cannot post a tutorial here. İt is not allowed. However, I can help you if you personally contact me. I hope you get your signal back soon.
Click to expand...
Click to collapse
Hej. I manage to mess upp my baseband/modem proberly when flashing a rom or i messed up in twrp.
Phone show up imei as null and unknown baseband so i would really appriciate you help here.
I still have orginalbox that show my imei so i can enter the correct one when needed.

psyckoze said:
Your modem and baseband sections may be damaged. Modem structure is hidden under qualcomm structure. To Access and repair those sections, you need to do some modifications. I managed to make my Zuk Z1 worked again with some tweaking. Altering that part of the phone is illegal due to its restricted elements such as IMEI number. That's why I cannot post a tutorial here. İt is not allowed. However, I can help you if you personally contact me. I hope you get your signal back soon.
Click to expand...
Click to collapse
Hi, I haven't still gone to the service centre. Kindly pm me the tutorial for getting signals back.

6P No Service | Vivo

Okay, who has followed my posts know my new Nexus 6P, which I bought from a guy wasn't recognizing my SIM card. (I'm apparently the second owner. He said that he imported the device so I assume that he was really the first owner)
Luckily I made it recognize the SIM card putting a tape on it at the SIM tray, but now my device keeps at No Service | Vivo.
Vivo is my carrier, but no matter what I do my Network Type at *#*#4636#*#* keeps at LTE/*I don't remember/CDMA. I've tried changing it in Settings/more/cellular network but didn't work either. Removing and putting SIM tray again didn't work as well.
Flashed factory image didn't work too. Also, flashing custom ROM didn't work.
Someone have a solution for it, please?
Since I fixed the unrecognized SIM with a simple tape I can believe something will fix this No Service trouble.

Had the same issue at my wifes old opo, the simpins inside the phone were broken. May yours are only bent if your lucky, hard to check without opening the backcover. Can you try another sim card first, friends, family or neighbors??? Or you need one tape more I had to replace the mobo. Took one of a broken phone cheap from the bay.

coremania said:
Had the same issue at my wifes old opo, the simpins inside the phone were broken. May yours are only bent if your lucky, hard to check without opening the backcover. Can you try another sim card first, friends, family or neighbors??? Or you need one tape more I had to replace the mobo. Took one of a broken phone cheap from the bay.
Click to expand...
Click to collapse
I'll try to tape it even more. I've checked over xda and a guy fixed it flashing February factory image. I'll try it as soon as I arrive home.

Debuffer said:
I'll try to tape it even more. I've checked over xda and a guy fixed it flashing February factory image. I'll try it as soon as I arrive home.
Click to expand...
Click to collapse
Hope you don't have to stay on it, good luck
Edit: is your simcardholder ok ?? May one site hangs and you don't have contact to the right pin.
Edit2: can you see the pins by using a bright flashlight ???

coremania said:
Hope you don't have to stay on it, good luck
Edit: is your simcardholder ok ?? May one site hangs and you don't have contact to the right pin.
Edit2: can you see the pins by using a bright flashlight ???
Click to expand...
Click to collapse
The device recognize the SIM, but it doesn't get network.

Debuffer said:
The device recognize the SIM, but it doesn't get network.
Click to expand...
Click to collapse
Yes, I get that, this was exactly my issue with the opo. Recognize but no service.

Your phone may be stuck on USA bands. The hidden menu apparently is buggy and once USA bands is selected by accident, you can't change it back. 7.1.2 was supposed to have added the ability to switch back to Auto, but I cannot confirm that. Look here. I know you are new, so to access the menu, youopen up the dialer and type this in- *#*#4636#*#*

I just noticed that I can switch to any (PRL) network in *#*#4636#*#*, but can't switch to LTE, GSM or WCDMA without the (PRL)...

v12xke said:
Your phone may be stuck on USA bands. The hidden menu apparently is buggy and once USA bands is selected by accident, you can't change it back. 7.1.2 was supposed to have added the ability to switch back to Auto, but I cannot confirm that. Look here. I know you are new, so to access the menu, youopen up the dialer and type this in- *#*#4636#*#*
Click to expand...
Click to collapse
I'm download it and very hopeful because it worked for many people... Anyway, this are the bands I've available for now:
United States
Cellular 800
PCS
Class 10 (800Mhz-Secondary)
Hopefully this PureNexus gonna fix this issue.

Debuffer said:
I'm download it and very hopeful because it worked for many people... Anyway, this are the bands I've available for now:
United States
Cellular 800
PCS
Class 10 (800Mhz-Secondary) Hopefully this PureNexus gonna fix this issue.
Click to expand...
Click to collapse
Sounds like you are stuck on USA bands. Good luck.

v12xke said:
Sounds like you are stuck on USA bands. Good luck.
Click to expand...
Click to collapse
My Nexus 6 (shamu), which works perfectly with the same Nano SIM, has all the Network Bands I quoted in my previous post + Class 15.
Not sure if my device should use Class 15, but I'm (was) using the same ROM on both (PureNexus Shamu and PureNexus Angler) and the angler doesn't work.
Download Chroma ROM to test it since the PureNexus quoted in the post you sent me is bootlooping in the Google Logo.
Just an EDIT...
I can select the Automatic bands selector, and it says that the Automatic was selected, which still doesn't give me any signal strenght.

Debuffer said:
Just an EDIT... I can select the Automatic bands selector, and it says that the Automatic was selected, which still doesn't give me any signal strenght.
Click to expand...
Click to collapse
In Chroma or PN? You may need to fastboot format your partitions, especially System coming from a custom ROM. Why not step back and fastboot format system, userdata and cache then reflash the custom PN ROM to try and get it booted. It also may take some time after changing bands to Auto. Maybe 5-10 minutes max. Let it settle.

v12xke said:
In Chroma or PN? You may need to fastboot format your partitions, especially System coming from a custom ROM. Why not step back and fastboot format system, userdata and cache then reflash the custom PN ROM to try and get it booted. It also may take some time after changing bands to Auto. Maybe 5-10 minutes max. Let it settle.
Click to expand...
Click to collapse
I'm now downloading a factory image for 6.0.1 then I'll flash PureNexus again. I read in the thread that it needs the 6.0.1 vendor to boot.
I'll flash this 6.0.1 stock then I'll flash PureNexus. Fingers crossed to this work.
Anyway, can we talk via Telegram? You look like know more than I and I would love to keep talking to you during this proccess.
I'm @Debuffer.

v12xke said:
In Chroma or PN? You may need to fastboot format your partitions, especially System coming from a custom ROM. Why not step back and fastboot format system, userdata and cache then reflash the custom PN ROM to try and get it booted. It also may take some time after changing bands to Auto. Maybe 5-10 minutes max. Let it settle.
Click to expand...
Click to collapse
And I meant I could select the Automatic Band in the latest 7.1.2 PN and/or stock rom.

Unhappily it didn't work.
Still No Service|Vivo

Just came from the tech and he tested the antenna. Everything is working great with the antenna. Anyway, I can't get any signal. He said maybe there's a problem in the SIM slot, and he showed me that the 6P is dual SIM
He told me to try finding a dual SIM tray and put my SIM in the slot 2.
Someone have any idea about what to do with it?

help with lg g6 sprint unlock

i contacted sprint CS and they said my phone is unlocked. but when i put non-sprint sim, phone says sim not found message. i did uicc unlock and it says successful but i still get the same error message. i even did ##72786# and that did not help either.
i understand that since uicc says unlock successful, sprint indeed unlock my phone. but why the hell is it not taking non-sprint sim yet?

amjad163 said:
i contacted sprint CS and they said my phone is unlocked. but when i put non-sprint sim, phone says sim not found message. i did uicc unlock and it says successful but i still get the same error message. i even did ##72786# and that did not help either.
i understand that since uicc says unlock successful, sprint indeed unlock my phone. but why the hell is it not taking non-sprint sim yet?
Click to expand...
Click to collapse
I'm in the same boat. I get a message that my sim tray isn't all the way in and then have the x over the sim card icon at the top. Kind of odd. I put it back on my sprint line and will call tech support to see if they can help.
---------- Post added at 07:10 PM ---------- Previous post was at 06:48 PM ----------
I'm trying to use this thread to set it up, but not having any luck installing the hidden menu app. Keeps saying it's corrupt.
https://forum.xda-developers.com/v20/help/lg-v20-cdma-to-lte-gsm-switch-via-t3602409

dbpaddler said:
I'm in the same boat. I get a message that my sim tray isn't all the way in and then have the x over the sim card icon at the top. Kind of odd. I put it back on my sprint line and will call tech support to see if they can help.
---------- Post added at 07:10 PM ---------- Previous post was at 06:48 PM ----------
I'm trying to use this thread to set it up, but not having any luck installing the hidden menu app. Keeps saying it's corrupt.
https://forum.xda-developers.com/v20/help/lg-v20-cdma-to-lte-gsm-switch-via-t3602409
Click to expand...
Click to collapse
do factory reset and it will work. i wasted 3 hours..

amjad163 said:
do factory reset and it will work. i wasted 3 hours..
Click to expand...
Click to collapse
That's the next step. I just have to wait until I get home so I don't need to use my phone and can pop the Tmo sim back in and do the reset. I did a whole reprovision and all and was surprised that didn't do it.

And you would have thought that would have done it, but no. It did initially. The restore stalled so I restarted the phone, and was back in the same boat again. Just reset again.

Got into developer mode and turned on oem unlock. Haven't had any problems since. Restarted phone a few times and even reset it again. Oem unlock stayed on after resetting.

Hi, could you help me with the procedure. I've turned developer mode on and turned on oem unlock. Then I switched to GSM/UMTS mode, restarted the phone. No service, HiddenMenu does not install (corrupt file). What did you d for it to work? (I have LG G6 LS993)

djekaka said:
Hi, could you help me with the procedure. I've turned developer mode on and turned on oem unlock. Then I switched to GSM/UMTS mode, restarted the phone. No service, HiddenMenu does not install (corrupt file). What did you d for it to work? (I have LG G6 LS993)
Click to expand...
Click to collapse
just do FACTORY reset

indeed, when doing that, all apps that are deleted will be restored, including your hidden menu app

I have unlocked my Sprint G6 and am using it on the TMUS network. Has anyone figured out how to load a different firmware that would support LTE and voLTE (Wifi Calling is not an option right now on my phone).
The phone seems to be stuck on 4G and the signal bar randomly goes up and down.

I'm in the same boat. I bought a Sprint LG G6, supposedly new, unlocked, paid for, and when I put in the TMobile SIM, it thinks the tray isn't inserted all the way. When I boot to the android OS, it sees bars, but it doesn't think a SIM is inserted. TMobile is baffled (I took it into the store). Now, I'm reading all kinds of conflicting information about how to deal with this... what's what? FYI, the person who sold me the phone is splitzo, won't answer my texts/calls. Unavailable for help.
Which of these is right?
1. I need to UICC Unlock it first. What is this, and how is it done?
2. I need to do a FACTORY reset. Where is this done from, bootloader, or the android OS's system menu? Are there specifics on how to do this?
3. I need to have Sprint SIM unlock it and that alone is good enough.
4. I need to flash the firmware from the bootloader. I didn't see anything on the TMobile forum for the LG G6 that looked promising for being able to do this. Astonishingly little. I'm assuming it cannot actually be done, flash from Sprint to TMobile...
5. I need to do something ELSE from developer mode or from the bootloader. How does one get into "developer mode"? Is this the android OS developer mode, or is this bootloader/recovery mode/lower-level developer mode? How does one get into developer mode?
Please help straighten this out. I can't be the only one left in this situation!

2. Factory Reset by going to Settings > System > Reset
5. Enable Developer Mode by going to Settings > System > About Phone > Tap on Build Number 7+ times.
BroncoBilli said:
I'm in the same boat. I bought a Sprint LG G6, supposedly new, unlocked, paid for, and when I put in the TMobile SIM, it thinks the tray isn't inserted all the way. When I boot to the android OS, it sees bars, but it doesn't think a SIM is inserted. TMobile is baffled (I took it into the store). Now, I'm reading all kinds of conflicting information about how to deal with this... what's what? FYI, the person who sold me the phone is splitzo, won't answer my texts/calls. Unavailable for help.
Which of these is right?
1. I need to UICC Unlock it first. What is this, and how is it done?
2. I need to do a FACTORY reset. Where is this done from, bootloader, or the android OS's system menu? Are there specifics on how to do this?
3. I need to have Sprint SIM unlock it and that alone is good enough.
4. I need to flash the firmware from the bootloader. I didn't see anything on the TMobile forum for the LG G6 that looked promising for being able to do this. Astonishingly little. I'm assuming it cannot actually be done, flash from Sprint to TMobile...
5. I need to do something ELSE from developer mode or from the bootloader. How does one get into "developer mode"? Is this the android OS developer mode, or is this bootloader/recovery mode/lower-level developer mode? How does one get into developer mode?
Please help straighten this out. I can't be the only one left in this situation!
Click to expand...
Click to collapse

I finally figured out that for the Sprint phones, a lot of phones in this model had bad SIM trays. I had the SIM tray replaced and everything (including the TMobile SIM chip) started working great. I didn't need to do anything to it, since it was unlocked.

BroncoBilli said:
I finally figured out that for the Sprint phones, a lot of phones in this model had bad SIM trays. I had the SIM tray replaced and everything (including the TMobile SIM chip) started working great. I didn't need to do anything to it, since it was unlocked.
Click to expand...
Click to collapse
is this true???
I'm having trouble with Tmobile sim on g6 unlocked as well. After talking to sprint reps for numerous times, finally one guy said I have to de-register the device from sprint network to release it to tmobile..
his recommendation was I port out .. LOL thanks Sprint.

Is the Sprint G6 hardware different to an unbranded G6, can the unbranded firmware be put on once the phone is unlocked?
Thanks
---------- Post added at 12:12 AM ---------- Previous post was at 12:12 AM ----------
Is the Sprint G6 hardware different to an unbranded G6, can the unbranded firmware be put on once the phone is unlocked?
Thanks

thewudz said:
Is the Sprint G6 hardware different to an unbranded G6, can the unbranded firmware be put on once the phone is unlocked?
Thanks
---------- Post added at 12:12 AM ---------- Previous post was at 12:12 AM ----------
Is the Sprint G6 hardware different to an unbranded G6, can the unbranded firmware be put on once the phone is unlocked?
Thanks
Click to expand...
Click to collapse
I think the unbranded/unlocked ones are GSM only. I was looking to see if a TMo one could be used on Verizon, and saw there were a few variations and the ones with CDMA are different than the rest.
They're not where Samsung is making one phone with everything.
Sent from my SM-N950U using Tapatalk

so after talking with sprint community thru PM (much better support), I got my g6 unlocked. on tmobile, talk and txt works but no DATA. It seems like common issue but no one has firm answer. Anyone?

where did you get the sim tray from? been having this issue since i bought it. hard reset works but restart does not! so if your phone is dead of battery, then you gotta do hard reset which is a pain to transfer data/reinstall etc..

BroncoBilli said:
I finally figured out that for the Sprint phones, a lot of phones in this model had bad SIM trays. I had the SIM tray replaced and everything (including the TMobile SIM chip) started working great. I didn't need to do anything to it, since it was unlocked.
Click to expand...
Click to collapse
are you sure? i am in the same boat. spent countless hours on this. my phone is unlocked, hard reset detects other network sims but once i restart/re-insert it won't.
if what you said is true, have you tried to put sprint sim using defective tray? at least for me, it detects sprint sim anytime but other sims only when i do hard reset. if tray is the fault, then it should not even detect sprint sim, correct?
where did you get the sim? am worried if i buy from ebay, what if that too has the same issue?

I mean the sim reader ITSELF was bad, not the tray you put it in with. Sorry about that. I used several sims, from TMobile...

No Service with Sim Card Inserted

A few days I woke up with no service on the Nexus 6p. This was a few days after updating to the latest oreo build. Sim card seems detected because when I take it out another message shows up "No SIM card - No service", and when I put it back it only shows "No service". Tried putting the card in a Nexus 5X and it works fine.
Tried the following with nothing working so far:
- Switching 2G/3G/LTE and rebooting in between.
- *#*#4636#*#* and turning off the radio, switching between the different options of GSM/LTE/etc...
- Restoring a working nandroid backup
- Reflashing different ROMs
- Factory reset
- Factory reset then flashing ROMs
- Wiping cache and dalvik
- efs fix in twrp
Hardware version ANGLER-VN2
IMEI shows up under IMEI information tab but not under SIM Status tab, there it shows not available.
I live in Ontario Canada, carrier is Freedom mobile.
So now I'm stuck, tried calling google and hwawei and they won't do an RMA because my warranty is expired.
Anyone has any ideas to try?
Thanks in advance.

Not that this is going to help, but this has GOT to be an Oreo issue, myself as well as at least 4 others that I have seen has been getting the No service, or No Sim, mine did the No Sim, then started bootlooping.
---------- Post added at 07:36 AM ---------- Previous post was at 07:06 AM ----------
https://www.theandroidsoul.com/fix-...d-wifibluetooth-issues-restoring-twrp-backup/

No this has nothing to do with O.
Which version phone do you have? H1511 or H1512?
What country are you in now?
What is your carrier? If MVNO state that.
Are your IMEI and phone numbers showing up in settings?
Everyone, please put the most basic information in your profile like where you live, which carrier you are currently on, and maybe even which variant of your phone.

I updated the first post with more info. How do I tell if I have H1511 or H1512? I bought it from the google store in Canada.

More information is good. Please update your XDA profile so the next person trying to help can check there first. You can find the device variant by booting to bootloader (not recovery) and using the vol toggle to navigate to "Barcodes". IMEI should show up there too. Date of manufacture, Serial #, etc. I think you should have started a normal thead, not Q/A, BUT your IMEI and a lot of other information should be showing up under SIM info. That's a problem. Second, you say you did the EFS fix in TWRP. Can you explain how you did this? Did you use one of YOUR OWN TWRP backups which contained the modemst1,modemst2 and restored ONLY those two partitions to your device? Did you receive any confirmation or error? Have you tried using a SIM from a Rogers or Telus in your phone to see if the SIM info shows up?

Thanks for the help, I'll update my profile with this info as well.
in the bootloader the IMEI shows up along with the rest of the info. It's a H1511 device.
The EFS fix is by following this: https://www.theandroidsoul.com/fix-empty-imei-corrupted-efs-no-sim-unknown-baseband-wifibluetooth-issues-restoring-twrp-backup/
is modemst1 and 2 contained in the twrp backup? and if so how do I restore it? in restore options there's system, data, vendor and boot only. I guess it's an option in the backup that I haven't selected?
I tried another SIM also from freedom and it didn't work. I don't have a Rogers or other SIM to try currently.

Right, so if you didn't ever select the EFS partitions when using TWRP Backup, you never backed them up so under Restore they don't show up (so you can't use that method). You can however use TWRP terminal or fastboot to wipe those and reboot. I would be sure to try at least one SIM from either Rogers or Telus. If that doesn't work, then wipe the EFS partitions and let them rebuild (hopefully).

Definitely Oreo issue. Google messed with something and it broke data for many people. I have been troubleshooting this for the last week (Verizon, US, fully stock 6P) and finally found a thread where a Google rep acknowledged the problem and said it was high priority for a fix.

I wish you luck with that one @LucJoe. This has been happening for the past 2 years from MM, N, and now O...and XDA is full of threads (just look). So you just go ahead and wait for Google to fix it for you, LOL. - Not a new issue related to O.

Never happened to me before updating. The data issues manifest differently across different carriers but for some reason Oreo likes to play it safe and disconnect data. I have not been able to get LTE for more than a couple seconds, but will get slow unstable 3G occasionally. Google confirmed the issue here: https://productforums.google.com/forum/#!msg/phone-by-google/kw3ZcXd1BVs/7HYuANdoAgAJ

A recent success using terminal from TWRP (or the OS if you are rooted). You can also use fastboot to do the same thing using the commands in the article posted in this Q/A (method 2). Good luck! See thread here.

This seems like it's a different issue described in that thread. I'm not running out of data, there's no service and no connection of at all to any network.

I did find that and try it before posting here. It did nothing to fix the problem. It did say that something was copied over '4 MB copied, at 14.3 MB/s' something like that but nothing changed.

I also have the same issue. Have tried everything including going back to stock 7.1.2 & locking the bootloader. Nothing seems to work. Interestingly, when i pull up the hidden phone diagnostic menu, it shows all cell measurement info which means that the antenna is receiving signals but the phone somehow is not registered on the network?

I can wipe those partitions with fastboot but is it safe? I have never used TWRP and my problems started after updating to Oreo. Is there a chance the official OTA could corrupt those partitions?

@LucJoe- That fix is not for you. That is for users who have no IMEI or phone number under About Phone>>SIM info. Your issue (as I understand it) is a weak and intermittent signal that keeps disconnecting LTE and sounds like a carrier or SIM issue. Why not go get a new SIM provisioned for your phone. That or pop somebody else's SIM in your phone and see if you get a different outcome.

Yes that was my first thought as well. I got a new SIM, then another one. So 3 SIMs now with the same result. I've been on the phone with so many techs from Verizon/Total Wireless and none of them have any answers. If I put the same SIMs into a Moto E4 I picked up for testing, it works fine. But the 6P immediately disconnects from LTE then bounces between 3G/1X.
My next test is to try a SIM from a different network I guess... maybe Verizon is blocking my 6P. Or maybe my LTE radio is damaged somehow.

So I did this using TWRP but wasn't sure if it actually went through or not. I did it now through adb from pc and also fastboot and it says permission denied. Any idea how to bypass that?