Develop Bugs

Unlocked GSM Galaxy Nexus - No signal al all

Hello,
A bit about my Nexus: Bought it online, it's the Domoco version, unlocked, rooted and been using just fine with many custom ROMs.
So yesterday morning, I was talking on the phone with a friend without any problem. After hanging up for a few hours, when I was about to call someone else, I realized my phone didn't have any signal at all. And it has been like that until now, about 48 hours.
It happened so suddenly without any warning. The phone has never been dropped and everything else working just fine.
So here's what I have tried:
- Restart the phone (multiple times)
- Batter pull (multiple times)
- Factory reset the phone (multiple times)
- Wipe cache and dalvik cache in CWM (multiple times)
- Downloaded SetCPU and set the minimum to 700Mhz (instead of 350Mhz)
- Reflash the ROM and tried with other Custom ROMs (I tried Xenon, Xylon, PA, and Carbon ROMs)
- Reflash the Radio and tried with other Radios too (I tried UILH1, XXLH1, SC04DOMLE3 and some others ...)
- I also went to Tmobile and request a new sim card - same problem.
- I borrowed a sim card from another Tmobile customer to try it on my phone - no signal - but the sim card works just fine on his phone.
I ran out of thing to try and I dont understand what happened ... anyone has an idea or something else for me to try ?
Anyone experience this before ?

Welcome too my hell. I have a playstore one now but my first Gnex was an international one and it has this same issue. Its a PCB problem a warranty would fix. I'm near Chicago and a few people have told me there is an electrical engineer downtown that fixes stuff like this. I don't have a price but I think something like this is your only option. Mine sadly is still a battery charger:thumbdown:
Sent from my Galaxy Nexus using xda premium

I know it sounds stupid, but have you tried toggling airplane mode? I run into the occasional loss of signal when im at work [fair to weak signal in the big metal box], and a reboot is the only thing that fixes it for me. Mines a play store model.

bodh said:
I know it sounds stupid, but have you tried toggling airplane mode? I run into the occasional loss of signal when im at work [fair to weak signal in the big metal box], and a reboot is the only thing that fixes it for me. Mines a play store model.
Click to expand...
Click to collapse
Ah yes, I actually did try that too but forgot to mention. I tried toggle airplane mode on and off, also the 2G only mode on and off. But it didn't help with anything.
Thanks for the suggestion.
JediDru said:
Welcome too my hell. I have a playstore one now but my first Gnex was an international one and it has this same issue. Its a PCB problem a warranty would fix. I'm near Chicago and a few people have told me there is an electrical engineer downtown that fixes stuff like this. I don't have a price but I think something like this is your only option. Mine sadly is still a battery charger:thumbdown:
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
So I guess I have to look for an electrician then, cause I have this phone just a little bit over a year so warranty is a no go for me.
Thanks for the idea.
PS: anyone else has more option for me ? I just wondered if I have bricked my phone ... cause I flashed lots of diff. ROMs to try out but never gotten a bricked phone before, could this be a bricked phone ?

Bricked refers to a phone that does what a brick does: nothing. It doesn't boot, it does not light or attempt to boot, it does nothing. This is a signal issue..I have no prior experience with docomo, but this thread came up on search: http://forum.xda-developers.com/showthread.php?t=1574018, maybe it'd be helpful. Have you converted it to yakju or takju and tried a google factory image?
And this: http://forum.xda-developers.com/showthread.php?t=1554150. If it is a circuit board, it kinda looks like s.o.l., and im sad to say that to you.

I wanted to let you know that I experienced the same issue. I bought the unlocked Docomo Galaxy Nexus, and had it working fine on T-Mobile for half a year, and then suddenly had no signal on Tuesday. Nothing I did - factory reset, battery in and out, sim card in and out - could fix it. Have you tried using different sim cards in your phone to see what works and what doesn't?
I figured out that my phone will accept AT&T, and actually does connect to T-Mobile while roaming (I used an international sim card). But, my phone will say "Cannot find mobile network" when any T-Mobile sim card is inserted.

chowabbajack said:
I wanted to let you know that I experienced the same issue. I bought the unlocked Docomo Galaxy Nexus, and had it working fine on T-Mobile for half a year, and then suddenly had no signal on Tuesday. Nothing I did - factory reset, battery in and out, sim card in and out - could fix it. Have you tried using different sim cards in your phone to see what works and what doesn't?
I figured out that my phone will accept AT&T, and actually does connect to T-Mobile while roaming (I used an international sim card). But, my phone will say "Cannot find mobile network" when any T-Mobile sim card is inserted.
Click to expand...
Click to collapse
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.

wocman said:
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.
Click to expand...
Click to collapse
I know others who bought their GNEX through the Play Store and those work just fine with T-mobile. I tried their sim cards in my phone and it doesn't work. I don't think T-mobile is intentionally blocking the docomo phones, because I'm getting T-mobile through roaming, when I use an international sim. My guess is they're doing something to the cell network that just somehow leaves our configuration out. Hopefully it's temporary, but who knows.
Worse case, I'll just purchase a Nexus 4, because I love 4G data for just $30/month with T-mobile. Anyone else got suggestions?

wocman said:
I also have the same problem with the docomo phone. ATT Sim card works. Tried other's T-mobile sim cards and it doesn't work. I wonder if somehow the IMEI has been blocked by T-mobile.
Click to expand...
Click to collapse
Alright, update on this and there' good news. I called Tmobile and they said my IMEI is actually Blocked. The reason, according to him, is that Tmobile usually sweep the network to clean up all "un-supported" devices, so my device is apparently one of them and therefore got blocked about 2 days ago.
So he said for this, he needs to escalate it to business support and they surely can unblock it for me, but I have to wait until Monday since they don't work on weekend. But well, that's surely a good news. phewwwwwwwwwwwwww !!!
So to all of you guys who are in the same situation, make sure you call Tmobile first before flashing crazy like I did LOL.
Thanks for all the help.

I'd love to know if you are able to get this unblocked and working as I have the same problem as of Tuesday. I was traveling and went into a TMO store, and they told me it was NOT IMEI blocked. In fact they looked at the IMEI and read the page and said 'it was not eligible for blocking'.

I called TMO to see if my phone is IMEI blocked, and through three levels of support the universal answer was no. I'm now fully confused because if it's a hardware issue, why did several people all have the same problem all on Tuesday. For those others who are having issues, can you see the TMO network but not connect to it? That's what I have, I can see TMO and AT&T but haven't been able to connect to either one since Tuesday.

simple23227 said:
Alright, update on this and there' good news. I called Tmobile and they said my IMEI is actually Blocked. The reason, according to him, is that Tmobile usually sweep the network to clean up all "un-supported" devices, so my device is apparently one of them and therefore got blocked about 2 days ago.
So he said for this, he needs to escalate it to business support and they surely can unblock it for me, but I have to wait until Monday since they don't work on weekend. But well, that's surely a good news. phewwwwwwwwwwwwww !!!
So to all of you guys who are in the same situation, make sure you call Tmobile first before flashing crazy like I did LOL.
Thanks for all the help.
Click to expand...
Click to collapse
I'll call up T-Mobile tomorrow and ask if they IMEI blocked my device. I had them reset my signal and give me a new SIM card, but didn't realize it could have been IMEI blocked. I'll give them a call on Monday and let you know what the result is. Maybe it won't be too late to cancel my order on that Nexus 4...

I'm quite confused. I've been told last Thursday in a TMO store and with tech support that I didn't have an IMEI block, and the same with three reps tonight. I know the Sim Card is good, and so I'm being told its a hardware issue. However, several of the same phones had the same issue on the same day, so I can't buy it's a hardware issue. Has anyone with this issue flashed a new or different radio into the phone, either before or after the service loss? I have not, running it as it came out of the box.

I just got off the phone with T-Mobile Support, and they told me the device is not blocked. The reason is that T-Mobile cannot block or unblock devices that are not registered to T-Mobile. So I'm back to square one on this.

chowabbajack - When did you first have a problem, last Tuesday? Did you prior to that do any flashing or radio changes to the phone?
We're in the same spot....

alexwinsberg said:
chowabbajack - When did you first have a problem, last Tuesday? Did you prior to that do any flashing or radio changes to the phone?
We're in the same spot....
Click to expand...
Click to collapse
I did not do any kind of flashing or radio changes prior to Tuesday, when I lost signal.

chowabbajack said:
I did not do any kind of flashing or radio changes prior to Tuesday, when I lost signal.
Click to expand...
Click to collapse
That makes me think its something to do with the radio software, because I am the same the problem overall doesn't seem as large as the number of phones I perceive were bought on the Docomo deal.

Ive been using the docomo version of the nexus as well on tmobile for almost a year and it was since last tuesday when it no longer recieved any singal. with some digging around and too many phone calls, I found that the imei number on the phone is not the same as the one under the battery. i have the generic 004999010640000 imei right now and it not sure how i got it. as i bought it unlocked.
what i have tried:
reboot, battery plug, reinsert sim, factory reset, root and flash, got a new sim card, relocked, unlocked
sim card works on other phones.
also i have called tmobile and samsung endlessly and this is what i got:
tmobile cannot unblock the imei since it is not from them.
samsung is redirecting me to their japan branch.
docomo i cannot reach.
my phone before last tuesday:
unrooted stock 4.2.1
been testing different things to see if there is any way to restore the imei
also using root explorer, i cannot find my efs folder....

I've got the same problem since last Tuesday with my GNex and T-Mobile.
Mine is not from docomo though, but the French phone provider SFR, unlocked through FDocomo apk.
Rooted phone, running 4.2.1., no changes whatsoever in the past month and it worked fine until Tuesday, so I don't think I'm responsible for having no signal.
Honestly, I am relieved to see we are quite a few to have this problem, and also very pissed at T-Mobile for causing all this. What should be the next step then? Is there any chances they fix the issue quickly? If not, I might just go to the competition. I've tried AT&T sim cards and they work fine.

vanessax17 said:
Ive been using the docomo version of the nexus as well on tmobile for almost a year and it was since last tuesday when it no longer recieved any singal. with some digging around and too many phone calls, I found that the imei number on the phone is not the same as the one under the battery. i have the generic 004999010640000 imei right now and it not sure how i got it. as i bought it unlocked.
what i have tried:
reboot, battery plug, reinsert sim, factory reset, root and flash, got a new sim card, relocked, unlocked
sim card works on other phones.
also i have called tmobile and samsung endlessly and this is what i got:
tmobile cannot unblock the imei since it is not from them.
samsung is redirecting me to their japan branch.
docomo i cannot reach.
my phone before last tuesday:
unrooted stock 4.2.1
been testing different things to see if there is any way to restore the imei
also using root explorer, i cannot find my efs folder....
Click to expand...
Click to collapse
I have the exact same generic IMEI number as you, which does not match the number under the battery. I'm not liking the news that you did flash and still no go. I'm a novice at this stuff so please keep us posted.

Verizon Galaxy Nexus no data or cell service / Possible hardware problem

Recently i have purchased a used Verizon Galaxy Nexus from a seller on ebay. It is in excellent shape and has no cosmetic damage to the phone. The persone i purchased it from was a reputable seller and had the feedback to back it up. Now with that said. The phone was listed as broken because the seller could not get the phone to connect to the Verizon cell network.
So i bought the phone thinking that maybe the phone had some deleted files on it that i could replace or better yet. Just flash all new software to the phone and remedy the problem. Thus i would have bought a phone for a quarter the price of a new one and have a fully functioning phone.
As far as flashing and roming goes. I am no novice. I have owned many Android phones, in fact thats all ive owned lol, but this one is causing me some frustration. So here is a list of the things i have done to remedy the problem to no avail...
1) Factory Reset- no go
2) Complete Re-Flash of the entire framework - Im talking everything. Careful fastboot flash of every elemet of the android ecosystem
3) Radio swapps from older versions to newer versions.
4) Multiple reboots and toggleing airplane mode over and over again.
5) Flashed several aftermarket roms.
6) Toggled the test mode in phone settings using the hidden menu (*#*#4636#*#*)
For a short period of time last night i was able to get the phone to display up to 3 bars of service using the method described in #6 I NEVER got data working and i could only temporarily call out. My girlfriend would see me calling in on her phone but immediately upon answering it would drop my call. The phone never rang on my end and it cannot receive calls. Also cannot send text messages.
I thought for sure i could fix this one, but for some reason it is being stubborn. Please Help me XDA!!! Your my only Hope!!!
P.S. As an aside i did take the phone apart and check to make sure nothing was damaged. All the components look top shape and all the little snap connectors are securely fastened. No metal contact prongs are bent and everything is clean of dirt and debris.

does it display your IMEI *#06#?
maybe some NV_DATA corrupted or it can be hardware issue

Does indeed show imei and I had it checked for lost / stolen / blacklist by Verizon. At the store now to get it checked out.
And that is actually meid that that code pulls.
Sent from my large and in charge GN2 using Forum Runner

And the verizon store could not do any good. Has anyone ever ordered a replacement back casing from ebay or anywhere else on the web? Im thinking it may be a ribbon cable somewhere. Maybe even the bottom board that houses the headphone jack and a series of winding antenna leads.
I am still open to suggestion though so anyone with any information on the matter please let me know.
EDIT: Been looking at Cell phone repair shop and they have the antenna / headphone replacement in stock. They also have the back mid frame with all the antennas on it as well.
I feel like this is a 50/50 shot in the dark as to which part i need to fix this problem. Gonna give them a call tomorrow and see.

I've ordered a new mid frame in the hopes that there is a torn ribbon cable somewhere in the old one. I'm still not certain that's what it is though.
Anyone with some insight please get back to me.
Sent from my Galaxy Nexus using Forum Runner

Bump.
Still need some help guys. This is a very perplexing problem that i would like to fix.

Anyone? Mods? Admins? Devs? I need some help here. Don't let me down xda!!!
Sent from my large and in charge GN2 using Forum Runner

sounds like a unconnected/torn radio cable to me.

Zepius said:
sounds like a unconnected/torn radio cable to me.
Click to expand...
Click to collapse
I've been all through the device and checked all the connections and hardware. Everything has a firm connection and is in top shape. I even replaced the back midframe cover with a brand spanking new (OEM Samsung) one. Its behaving like a software problem in that I can toggle between 3G and 4G and get 3G for a brief moment and can even call out, but the moment that someone answers the call it drops service and i have to start the process all over again.

UrbanDroid said:
I've been all through the device and checked all the connections and hardware. Everything has a firm connection and is in top shape. I even replaced the back midframe cover with a brand spanking new (OEM Samsung) one. Its behaving like a software problem in that I can toggle between 3G and 4G and get 3G for a brief moment and can even call out, but the moment that someone answers the call it drops service and i have to start the process all over again.
Click to expand...
Click to collapse
Try fastboot flashing the factory images from google.
Sent from my Nexus 7 using xda premium

blackhand1001 said:
Try fastboot flashing the factory images from google.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
I've done this as well several times. 4.2.2 and 4.2.1 and yes i made sure i had the correct firmware for my version of the phone. Verizon toro.
Edit: Has anyone ever sent in their phone to Samsung for RMA? I called and talked to someone and tried to work through the problem and she came to the conclusion that I should send it in at no cost and that I wouldn't be charged anything unless I authorized them payment before. Essentially they will run through the phone and check everything out for free and see if it can be fixed.

UrbanDroid said:
I've done this as well several times. 4.2.2 and 4.2.1 and yes i made sure i had the correct firmware for my version of the phone. Verizon toro.
Edit: Has anyone ever sent in their phone to Samsung for RMA? I called and talked to someone and tried to work through the problem and she came to the conclusion that I should send it in at no cost and that I wouldn't be charged anything unless I authorized them payment before. Essentially they will run through the phone and check everything out for free and see if it can be fixed.
Click to expand...
Click to collapse
I did the same thing. Bought one from ebay in good shape. Was told it functions. I have the HTC Rezound so the sim wouldnt fit. Went to Verizon and they put in the mini sim and no service. Reset the phone and even tried a new sim. I have since tried different roms and radios, but still no service. Luckily the seller has a 100% guarantee so looks like this one is going back. From what I have read, these are prone to radio issues.

Sir Lemmiwinks said:
I did the same thing. Bought one from ebay in good shape. Was told it functions. I have the HTC Rezound so the sim wouldnt fit. Went to Verizon and they put in the mini sim and no service. Reset the phone and even tried a new sim. I have since tried different roms and radios, but still no service. Luckily the seller has a 100% guarantee so looks like this one is going back. From what I have read, these are prone to radio issues.
Click to expand...
Click to collapse
Yeah. I've read multiple threads about radio issues, but here's the thing. Every one of them claiming to have signal issues also had the random reboot issue. They all were even having problems flashing any Roms or anything else for that matter.
I on the other hand have had zero problems flashing anything. Fastboot works 100%, Recovery flash works 100% and I can unlock and lock the boot loader without issue. Its an odd problem.
Sent from my large and in charge GN2 using Forum Runner

UrbanDroid said:
Yeah. I've read multiple threads about radio issues, but here's the thing. Every one of them claiming to have signal issues also had the random reboot issue. They all were even having problems flashing any Roms or anything else for that matter.
I on the other hand have had zero problems flashing anything. Fastboot works 100%, Recovery flash works 100% and I can unlock and lock the boot loader without issue. Its an odd problem.
Sent from my large and in charge GN2 using Forum Runner
Click to expand...
Click to collapse
I've had an issue flashing, it would abort for no reason. I would also have issues getting into CWM. After playing around with it all night, I don't think its a software issue. I've been reading the antenna has given other people issues and some have even tried to replace them. a Rep from Verizon thought it was the sim reader. I don't believe that because the phone registers a sim and the number tied to it (which is my number). Under status, I does read different every time.
Network: searching for service
Signal strength is usually at: -120dBm 99asu
Mobile network type: (varies) CDMA - 1xRTT:7 or LTE: 13 or unavailable
Service state: out of service
Roaming: not roaming
Mobile network state: (varies) Disconnected or Connected
I've tried different combos such as CDMA and Home LTE Automatic and so on. I think its just a poor design. Seems to be only the CDMA devices tho.

Did OP ever arrive at a solution or at least pinpoint the cause of this problem? I am currently experiencing a pretty much identical problem to the one described (with the exception that I don't even get a 3G signal -- complete lack of signal). My problem started after a brief Airplane mode toggle yesterday and I haven't been able to get on the network since.
Thanks.

I think it's a hardware problem tbh.
I modded mine to work with the palm pre touchstone inductive charging kit. In the process wires were soldered, rear housings were mutilated and the phone was tortured a bit. I was never happy with Samsung's **** build quality so I eventually just ditched it altogether.
I decided to repair it and give it to a family member so I replaced the back housing and USB port with parts ordered off ebay. Ever since my repair work the thing cosmetically looks almost mint. However no OS will recognize it anymore (windows throws an "invalid descriptor" and won't install a driver) and 3G/4G/wifi reception is almost nonexistent. Switching roms or radios doesn't seem to help, and obviously I can't odin a factory image. Pretty much boned.

pbourdyk said:
Did OP ever arrive at a solution or at least pinpoint the cause of this problem? I am currently experiencing a pretty much identical problem to the one described (with the exception that I don't even get a 3G signal -- complete lack of signal). My problem started after a brief Airplane mode toggle yesterday and I haven't been able to get on the network since.
Thanks.
Click to expand...
Click to collapse
Had a similar problem in regards to a lack of signal. It just completely gave out while driving a couple days ago (interestingly enough, the music I was streaming via Soundcloud stopped right as I passed the Facebook headquarters in Menlo Park, which ironically is a 4G dead zone for Verizon). This was a refurbished replacement device that I got about 15 months ago, and was running the latest OmniMetal rom flawlessly for the last few months.
I arrived at this thread and followed all the steps that OP took to try and fix it. Ended up reverting to an earlier 4.2.2 rom and reflashed the radios thinking that might solve the problem. Upon reboot was able to connect to mobile data and make phone calls briefly, but about an hour later the same thing happened. Brought it to the store and swapped out the SIM card for a new one, no dice.
Fortunately VZW is doing open enrolment for phone insurance, so I added it for $10/month to get an extended warranty. Now I'm going to restore everything to stock, lock the bootloader and send it back for a new one. Assuming there are no problems with the replacement, I can cancel the insurance plan, bringing the cost of the replacement Gnex to just 10 bucks.
Was anyone out there able to successfully modify the radio hardware for cheap?

coltronathon said:
I think it's a hardware problem tbh.
I modded mine to work with the palm pre touchstone inductive charging kit. In the process wires were soldered, rear housings were mutilated and the phone was tortured a bit. I was never happy with Samsung's **** build quality so I eventually just ditched it altogether.
I decided to repair it and give it to a family member so I replaced the back housing and USB port with parts ordered off ebay. Ever since my repair work the thing cosmetically looks almost mint. However no OS will recognize it anymore (windows throws an "invalid descriptor" and won't install a driver) and 3G/4G/wifi reception is almost nonexistent. Switching roms or radios doesn't seem to help, and obviously I can't odin a factory image. Pretty much boned.
Click to expand...
Click to collapse
I did the same mod, and other than losing my pc connection (which frankly is never needed) it's been great. You have to be very careful and take your time. I'm not even convinced that my pc connection issues are related to the Palm mod, I think they just happened to coincide. Either way, I don't need it so I never bothered tracing it down.

[Q] SM-N900T, IMEI Cert Fail help

To make a long story short, I bought a T-Mobile unlocked Note 3 off of Swappa, and after three tries I finally got one that didn't have mismatching IMEI numbers, or one that got blacklisted like 5 days after I activated it. Anyway. This newest one was activated and fine until I got home and I did the OTA updates. Now it is saying that my "IMEI Cert: FAIL, -4" when I hit the *#0011# code; resulting in my loss of service. I have been looking all over the internet for a fix for this, and I can't find anything except for other people with this issue, and websites with poor English saying to pay them to fix it. Does anyone have any real info?

A quick Google suggests that using Odin to flash a stock ROM might fix it. I would do a full factory reset first as well. Get things back to base stock, as much as possible.
I seem to recall that some issues with EFS backup/restore in custom recoveries early on were fixed by wiping the EFS partition and rebooting. Apparently the modem firmware has a way to rebuild it on N3. For details, search the general forum and/or development forum. I don't recall details, just some talk about it working as a way to fix devices that got messed up. Don't even ask here about changing IMEI or other illegal options. They are not allowed on XDA, if they are even possible.
I can't believe you went through 3 bad phones. One would have been enough for me. I simply don't buy used phones online anymore. It's not worth the bother to me. I buy direct from TMO as I can make them fix it if they give me a bad one. Sucks, but since they can blacklist any time, and leave you hanging, I want to be sure I have a reputable place to go to get it replaced if that happens. I hope you get yours working again.

Drixnya said:
To make a long story short, I bought a T-Mobile unlocked Note 3 off of Swappa, and after three tries I finally got one that didn't have mismatching IMEI numbers, or one that got blacklisted like 5 days after I activated it. Anyway. This newest one was activated and fine until I got home and I did the OTA updates. Now it is saying that my "IMEI Cert: FAIL, -4" when I hit the *#0011# code; resulting in my loss of service. I have been looking all over the internet for a fix for this, and I can't find anything except for other people with this issue, and websites with poor English saying to pay them to fix it. Does anyone have any real info?
Click to expand...
Click to collapse
This may be a little bit late, but I just discovered that I could fix mine with the exact same issue by flashing a Jelly Bean modem for my model.
Under any firmware on KK or LP, it would Certi: Fail, as soon as I flashed a JB modem, it worked again and passed.

[Q] IMEI 0 but Network is Live

Hey Guys!
Yesterday I bought an LG G3 D855 32/3 from second hand.
It's already running a Custom Rom I don't ask to restore it couse I'll bump the bl right after the buy.
Today I check some thing and I see my IMEI is 0.
But I have a network conenction. Gsm, 2G, 3G and 4G too.
What does this imei 0 means for me?
This is for the custom rom?
Can I backup this efs ?
Can I loss my network If I switch rom?
Regards!

This happened to me on my d851. Unfortunately the IMEI is corrupt, but I was able to recover. After that, I made sure to back up my EFS. If you google "lost imei lg g3" you can find info on the recovery process with a little reading. Anyway I'd make sure you have the original IMEI still under the battery before proceeding. You also might want to check the IMEI to verify it is clean.
Do note, though, methods of writing the IMEI or supporting such are allowed on xda, though.
To answer your question on ROMs. When I had a 0 imei, I was able to connect to providers (att / tmobile) on multiple roms including stock. So in my case, it was just a nagging knowing it was 0. No ill effects. Your experience might be different, though.

theFume said:
This happened to me on my d851. Unfortunately the IMEI is corrupt, but I was able to recover. After that, I made sure to back up my EFS. If you google "lost imei lg g3" you can find info on the recovery process with a little reading. Anyway I'd make sure you have the original IMEI still under the battery before proceeding. You also might want to check the IMEI to verify it is clean.
Do note, though, methods of writing the IMEI or supporting such are allowed on xda, though.
To answer your question on ROMs. When I had a 0 imei, I was able to connect to providers (att / tmobile) on multiple roms including stock. So in my case, it was just a nagging knowing it was 0. No ill effects. Your experience might be different, though.
Click to expand...
Click to collapse
I have the same problem with my d851, IMEI shows 0 but i am able to make calls, text, browse,2g,3g(Havent tried LTE yet). How do i get my imei to display.
Its not a problem tho as i am able to connect to network but it will be nice if it displayed.

mickeyasamoah said:
I have the same problem with my d851, IMEI shows 0 but i am able to make calls, text, browse,2g,3g(Havent tried LTE yet). How do i get my imei to display.
Its not a problem tho as i am able to connect to network but it will be nice if it displayed.
Click to expand...
Click to collapse
It's only a problem if you resell. You have two options.
1) Contact LG and tell them what happened was a bad flash and hope they will allow you to send it in to get fixed.
2) Do it yourself, as I did. This cannot be discussed on xda because it could be used to change an IMEI to one not assigned to your phone. I ill say it's possible and using the software required is a legal grey area, but I technically DID sign an NDA with Qualcomm during the time I fixed my phone. Work reasons, so it may not have covered it, but still. Also there seems to be one version of the stock ROM that works with the software. for D851s that is.
Edit: The problem is the EFS got corrupt. If you fix this by all means BACK UP YOUR EFS and store it 100000 places

Very good advice indeed!
Had this problem with my G2 once
theFume said:
It's only a problem if you resell. You have two options.
1) Contact LG and tell them what happened was a bad flash and hope they will allow you to send it in to get fixed.
2) Do it yourself, as I did. This cannot be discussed on xda because it could be used to change an IMEI to one not assigned to your phone. I ill say it's possible and using the software required is a legal grey area, but I technically DID sign an NDA with Qualcomm during the time I fixed my phone. Work reasons, so it may not have covered it, but still. Also there seems to be one version of the stock ROM that works with the software. for D851s that is.
Edit: The problem is the EFS got corrupt. If you fix this by all means BACK UP YOUR EFS and store it 100000 places
Click to expand...
Click to collapse

theFume said:
It's only a problem if you resell. You have two options.
1) Contact LG and tell them what happened was a bad flash and hope they will allow you to send it in to get fixed.
2) Do it yourself, as I did. This cannot be discussed on xda because it could be used to change an IMEI to one not assigned to your phone. I ill say it's possible and using the software required is a legal grey area, but I technically DID sign an NDA with Qualcomm during the time I fixed my phone. Work reasons, so it may not have covered it, but still. Also there seems to be one version of the stock ROM that works with the software. for D851s that is.
Edit: The problem is the EFS got corrupt. If you fix this by all means BACK UP YOUR EFS and store it 100000 places
Click to expand...
Click to collapse
But as i have read in the past, replacing your imei with one that doesnt belong to ur device should cause a hardbrick. Also, i dont live in the US, i bought the D851 from a phone market i think it has been refurbished.
THis could mean that the imei at the back of the device might not belong to this device (I dont really know... at least, thats what friend suggested.) I checked IMEI.info for the imei at the back and it turned out with a no results. Then i checked it on the T-Mobile site and T-Mobile said the device has some bills and if the bills are not paid, it wont be able to be used with T-Mo.(I dont really care as we dont have T-Mo here. But atleast T-Mo recognizes the imei.) THen i checked the imei with one more imei database and it showed up.
Now, my problem is that i know of Qualcoms Program that allows the IMEI to get reassigned but i was wondering that was for devices that are not able to connect to network at all. With mine it seems the IMEI is there. Its just that the OS is unable to read it. Dont you u think using the Qualcomm process would be a little harsh?
Also since its able to connect to network, i think my ISP is able to read my IMEI. Could i call them and ask them to tell me my imei? So that i could compare it with what is written at the back of the g3?
EDIT: I just got off the phone and the ISP/Mobile Network agent said they are unable to see IMEIs from their end.(Not just mine but everyones). I dont know, maybe she just might not know how its done. I will still keep trying tho.

Restoring using Qualcomm software IS hard, overkill and VERY RISKY. At the moment since your provider doesn't care, I say ignore it. Also I have no idea what would happen if you tried to change an IMEI to one not meant for your device as I've not ever attempted such. You phone sounds like it has a bad IMEI, but that would only as you said blacklist it on TMO. The IMEI afaik is only used to track stolen phones and deadbeats on bills. So as the saying goes "If it ain't broke don't fix it". If I were you, I would question the person you got it from about the bill delinquency, but you don't really have to. Just seems fishy to me.

Nexus 5x pick no service

my lg nexus 5x recently went to become just a personal compact computer that unable to make or receive any call or connect to network, not a phone as smartphone as it should be. everything work just fine only that it not pick up any service. it has detected the sim card is inserting and the carrier name of the card (it's AIS, i'm living in Thailand) but still the bar is empty and its IMEI is still good. After several investigation and tens of flashing which doesn't work, I came across with some clue of the causes of the problem and I'm begging if someone has a solution for it.
1. i found that in Thailand the LTE band that is support here is only band 1 and and band 3 which in this device it support only USA, 5 and 7 so is anyone know where to get a radio.img file for flashing it to make it work?
2. when I brought this phone it said it the description that it is unlocked, but I not sure its really is or not, so is there any way to check on that and a way to unlock it.
3. i'm quite certain that isn't a hardware problem as it's still able to detect the card i put in, so if it a software problem and someone know a clue of solution, please post in
thank you

pongsiritn said:
my lg nexus 5x recently went to become just a personal compact computer that unable to make or receive any call or connect to network, not a phone as smartphone as it should be. everything work just fine only that it not pick up any service. it has detected the sim card is inserting and the carrier name of the card (it's AIS, i'm living in Thailand) but still the bar is empty and its IMEI is still good. After several investigation and tens of flashing which doesn't work, I came across with some clue of the causes of the problem and I'm begging if someone has a solution for it.
1. i found that in Thailand the LTE band that is support here is only band 1 and and band 3 which in this device it support only USA, 5 and 7 so is anyone know where to get a radio.img file for flashing it to make it work?
2. when I brought this phone it said it the description that it is unlocked, but I not sure its really is or not, so is there any way to check on that and a way to unlock it.
3. i'm quite certain that isn't a hardware problem as it's still able to detect the card i put in, so if it a software problem and someone know a clue of solution, please post in
thank you
Click to expand...
Click to collapse
1. Has it ever worked? Does it work on 2G/3G as the websites I link below say it should? The actual phone or simcard could be at fault here. But some info: If its not the international version and your carrier does not use the same bands then there is no software fix for this as it has to do with the hardware make up. Eg If the hardware cannot see band 3 no software with make it do so.
Here maybe some helpful links
https://www.frequencycheck.com/compatibility/k6lh22/google-nexus-5x-lg-h790/thailand
http://www.droid-life.com/2015/09/25/nexus-5x-hits-fcc-with-all-us-carrier-bands-including-verizon/
My suggestion, Return it and get the international (h791) model.
2.Unlocked in the fact there are no carrier/manufacturer restrictions preventing you from modding or preventing you from going to another carrier other than the one you brought it for. EG Moding a samsung device is a nightmare as carriers/manufacturers prevent you from unlocking the bootloader/installing recovery's etc and hacks are required to get around this. LG/Google allow this. 2 easy steps to unlock the bootloader and you are away.
3. It maybe the fact that the information maybe hardcoded on the simcard.

Thank you for your solution. It seems likely to be the first one as it has said in the description that it is the h790 when I brought it from eBay, and when it came and after I refurbished it, it never pick up my carrier's service since then.
One more question, is there any way to test the signal receiver function as if its still functional or not, by simulate US signal or something, because I may want to sell it to US someday and I want to make sure that it is actually work.

pongsiritn said:
Thank you for your solution. It seems likely to be the first one as it has said in the description that it is the h790 when I brought it from eBay, and when it came and after I refurbished it, it never pick up my carrier's service since then.
One more question, is there any way to test the signal receiver function as if its still functional or not, by simulate US signal or something, because I may want to sell it to US someday and I want to make sure that it is actually work.
Click to expand...
Click to collapse
The only way to test it is to use it on a network it supports.