Develop Bugs

"No service"

Hello
I have LG G3 the international version with installed stock rom 5.0,
Before I install it, I backed up the previous kitkat rom.. When I installed the lollipop stock rom I decided to go back to my previous kitkat rom. After restoring it and booted it everything was ok but it says no service, emergency calls only. And the signal at the status bar was refreshing every second automatically. I tried to return to that lollipop rom to see whether the signal is ok or no but there was no problem with it. But I dont know whats the probkem in that kitkat rom.... Plzzzz helpppp mee!!

I have the same problem! I used a custom lollipop rom and messed with something so I had to restore the stock Kitkat.
Now it keeps searching for the signal and says "no service" It found the signal for a few times but lost it immidiately.. Wifi works fine.
i would be rly thankful if somebody can fix this.

Jatiska said:
I have the same problem! I used a custom lollipop rom and messed with something so I had to restore the stock Kitkat.
Now it keeps searching for the signal and says "no service" It found the signal for a few times but lost it immidiately.. Wifi works fine.
i would be rly thankful if somebody can fix this.
Click to expand...
Click to collapse
Flash suitable Kitkat modem for phone.

Im having the same issue i purchased a used G3 and it says " NO service" ive tried eveything and verified with sprint there is no block on the phone. got a new sim card from TING ... the phone will activate only over WIFI but i have never been able to get cell service Is this a hardware issue? im totally lost and TING is telling me to take it to a cell phone repair shop. ( i repair phones myself actually as part of my job but never run into this)
Ive flashed back to stock from via XDA instructions
Any help would be awesome!!
Thanks

I have found a lot of threads and people reporting this issue. Bought a D855 32Gb from China that has this problem...
Phone tries to get signal a couple of seconds and then a cross.. and so on..
I tried everything I think, I passed for all the bricks the phone can do: Automatic Reboot / Boot Loop / Fast Boot / Security Error / Factory Reset Status 2 / Dead (QHSUSB_DLOAD) - I can help anyone that has any of those problems : )
In one of the flashes my phone turned to D855RE, similar case to other people, also the message "Current version is not available for user. Can't find matched cust for NT-Code mcc/mnc".
Please if anyone was able to fix the problem report here, there is a lot of people waiting for the answer 20 threads in different networks, I will post the solution in each of those. Thanks!

Same happening with me,
I have LG G3 T-Mobile version, it keeps searching the service, sometimes it finds when there is very good signal, or when I am too close to the GSM antenna, I was thinking maiby there is problem with antenna contact, I have opened cleaned, but with no success. When is has service it does everything, calling, sms, 4G.
any help with this issue?

satrowii said:
Hello
I have LG G3 the international version with installed stock rom 5.0,
Before I install it, I backed up the previous kitkat rom.. When I installed the lollipop stock rom I decided to go back to my previous kitkat rom. After restoring it and booted it everything was ok but it says no service, emergency calls only. And the signal at the status bar was refreshing every second automatically. I tried to return to that lollipop rom to see whether the signal is ok or no but there was no problem with it. But I dont know whats the probkem in that kitkat rom.... Plzzzz helpppp mee!!
Click to expand...
Click to collapse
Get the modem from here for your firmware version (mine is 10M) and flash in custom recovery,i had the same problem after downgrading,all will be good
http://forum.xda-developers.com/lg-g3/general/radio-modem-lg-g3-t3110376

still no luck with modem/radio change
ludoke said:
Get the modem from here for your firmware version (mine is 10M) and flash in custom recovery,i had the same problem after downgrading,all will be good
http://forum.xda-developers.com/lg-g3/general/radio-modem-lg-g3-t3110376
Click to expand...
Click to collapse
HI. i tried to change to several radio but I still don't have a signal. I just can't find the thread from other site, that it could be a D850 not an D855 motherboard. He tried to change the ROM to D850 and finally got a signal.

I have the same problem, any help is welcomed.

PacMaNNNN said:
I have the same problem, any help is welcomed.
Click to expand...
Click to collapse
If you can, return the phone. As previous post suggested, its a popular thing from some chinese sellers to change the model. You will see the original model in your motherboard (you have to disassemble the phone) and have to flash the proper stock image. First confirm that the model is the model you ordered.

juanmazake said:
If you can, return the phone. As previous post suggested, its a popular thing from some chinese sellers to change the model. You will see the original model in your motherboard (you have to disassemble the phone) and have to flash the proper stock image. First confirm that the model is the model you ordered.
Click to expand...
Click to collapse
The phone was okay, this started happening when I flashed stock Marshmallow, then I flashed MIUI KitKat rom to see if its the the marshmallow that does that only, but it was on MIUI as well, after that I flashed Fulmics, but still the same. Now I'm on stock Marshmallow and it's doing it as well. I found a little "thing", when you set the network type to WCDMA/GSM there is no more no service, everything works. But when you put LTE it goes down.

If you suspect this can be the case of model tempering by seller, open your phone and unscrew the upper plastic cover, at the right you will see the Motherboard factory code with the phone model in it. Youll have to flash an according complete stock with flash tool.

juanmazake said:
If you suspect this can be the case of model tempering by seller, open your phone and unscrew the upper plastic cover, at the right you will see the Motherboard factory code with the phone model in it. Youll have to flash an according complete stock with flash tool.
Click to expand...
Click to collapse
and from where i can find japanese version of lg g3 sock firmware?

Problem with automatic registering to network

Hi,
I am happy user of D855 but recently I run into strange problem. Once I loose gsm network signal - phone is not able to register to network automatically (I cross the border on daily basis so I am using roaming everyday). There is no error actually, it just looks like it found the network but it's not able to register (that loading cricle keeps rotating). But when I go to settings and manually select some provider - it connects without problem. Any ideas what could be the problem?
Problem started on stock rom (rooted). Currently I am running cloudy rom and there's still a problem.
EMEI number is correct, EMEI SV is 00 but Phone number in settings is unknown

drop_tbl said:
Hi,
I am happy user of D855 but recently I run into strange problem. Once I loose gsm network signal - phone is not able to register to network automatically (I cross the border on daily basis so I am using roaming everyday). There is no error actually, it just looks like it found the network but it's not able to register (that loading cricle keeps rotating). But when I go to settings and manually select some provider - it connects without problem. Any ideas what could be the problem?
Problem started on stock rom (rooted). Currently I am running cloudy rom and there's still a problem.
EMEI number is correct, EMEI SV is 00 but Phone number in settings is unknown
Click to expand...
Click to collapse
Was the stock rom KitKat ? I think you need to flash a suitable modem(radio)

ludoke said:
Was the stock rom KitKat ? I think you need to flash a suitable modem(radio)
Click to expand...
Click to collapse
When I bought this phone in was already 5.0. I could try to flash that modem but I am not sure were I could find it.

drop_tbl said:
When I bought this phone in was already 5.0. I could try to flash that modem but I am not sure were I could find it.
Click to expand...
Click to collapse
Here on XDA ,a little bit of searching hurts nobody

ludoke said:
Here on XDA ,a little bit of searching hurts nobody
Click to expand...
Click to collapse
Ok, I have installed 21A from here: http://forum.xda-developers.com/lg-g3/general/radio-modem-lg-g3-t3110376
but... it didn't change anything. Could that unknown phone number have something to do with it? Or is there some way to force it to be there?

drop_tbl said:
Ok, I have installed 21A from here: http://forum.xda-developers.com/lg-g3/general/radio-modem-lg-g3-t3110376
but... it didn't change anything. Could that unknown phone number have something to do with it? Or is there some way to force it to be there?
Click to expand...
Click to collapse
If you are rooted unroot in Super Su ,install LG G3 Pc Suite, connect the phone to pc and in Pc Suite choose upgrade,new stock firmware will be downloaded and installed,DO NOT DISCONNECT USB CABLE WHILE UPGRADING !!!!

any solution ?

Camera stopped working ("cannot connect to camera")

Hello everyone,
I bought a few weeks ago from amazon this phone: LG G4 H815 5.5-Inch Factory Unlocked Smartphone (Metallic Gold) - International Stock (No Warranty)
I know it says no warranty but I have to try. The thing is that yesterday, out of nowhere, the camera stopped working. Whenever I open the app it shows the buttons but the screen remains black. After a couple of minutes it shows the message "Cannot connect to camera".
I tried the following without success:
-Stopping the app and clearing the cache and data
-Rebooting in safe mode
-Disabling Nuplayer in the developer options
-Factory reset
Please help.
Thank you!!

Hi sorry for your problem . I have the same one . Have you resolved it and what was the problem ?

mehdinabil said:
Hi sorry for your problem . I have the same one . Have you resolved it and what was the problem ?
Click to expand...
Click to collapse
can you guys flash KDZ to stock firmware again if it continous its a hardware problem i guess.

raptorddd said:
can you guys flash KDZ to stock firmware again if it continous its a hardware problem i guess.
Click to expand...
Click to collapse
I flashed it to 5.1 h811 10n (mine is the t mobil version) via LG UP , the problem persisted . the same day i got an OTA update to MM 6.0, same problem dialer and camera don't work . I guess it's a hardware problem ; maybe the motherboard it has the infamous 506xxxxxx s/n

mehdinabil said:
I flashed it to 5.1 h811 10n (mine is the t mobil version) via LG UP , the problem persisted . the same day i got an OTA update to MM 6.0, same problem dialer and camera don't work . I guess it's a hardware problem ; maybe the motherboard it has the infamous 506xxxxxx s/n
Click to expand...
Click to collapse
mines h811 too.. well its not the infamos MB hardware failure.. as that will not boot phone... i suggest to get it repair. where did you get it..? as i see you from another country.. did you flash refurbished i=option??

I got the same issue and had to take it to service center to get it repaired. Since mine was under warranty the repair was done for free. I was told they replaced the board.
Sent from my LG-H818 using XDA-Developers mobile app

LG f180 / Optimus G No service disabled

hi hope ever one fine on this forum , i am having little trouble with my phone ,
i was using 4.1.2 android with no issue with signal at all
then i updated using recovery tool and install android 6 , CM 13 Unofficial geehrc v1 and gapps-600 all was working fine on phone after a month android crashed when i was booting it only logo appears and continue to load and load
so i tryed every thing to reinstall old version it using recovery tool and it installed back successfully but it also crash after 2 , 3 min it was very strange behavior , then i went to shop for repair and they flashed with android 4.4.1 kitkat but now problem is no IMEI number and network service is disabled so i just want to get network service back either with reinstalling rom or by flash or any menthod that can recovery my service back so please help me to get network back , mobile is showing U+ sign in left corner i thing it is korian version software installed may be that is the reason,
also LG f180L version only support korian sim network according to my thinking , well any expert can give better solution on this thanks for understand my story above

rajastar said:
hi hope ever one fine on this forum , i am having little trouble with my phone ,
i was using 4.1.2 android with no issue with signal at all
then i updated using recovery tool and install android 6 , CM 13 Unofficial geehrc v1 and gapps-600 all was working fine on phone after a month android crashed when i was booting it only logo appears and continue to load and load
so i tryed every thing to reinstall old version it using recovery tool and it installed back successfully but it also crash after 2 , 3 min it was very strange behavior , then i went to shop for repair and they flashed with android 4.4.1 kitkat but now problem is no IMEI number and network service is disabled so i just want to get network service back either with reinstalling rom or by flash or any menthod that can recovery my service back so please help me to get network back , mobile is showing U+ sign in left corner i thing it is korian version software installed may be that is the reason,
also LG f180L version only support korian sim network according to my thinking , well any expert can give better solution on this thanks for understand my story above
Click to expand...
Click to collapse
You have to install flash stock 4.1.2 F180L KDZ again (yes! the korean one). Regarding IMEI/ No service, no one can help u if the EFS partition is lost (because that contains the phone info to be registered on the network).
The bootloop u had at CM13 has even easier fix than all of this KDZ mess. When I had my E975, The problem I had was no signal in CM12.1/CM12 so I had to resort to CM11. The F180's are so much falling into this crossflashing mess that its difficult to diagnose what can be the culprit.
Get the JB firmware flashed and check if u have imei.

4G and SMS access , but cant make calls on SIM slot 1

Hello Professionals
I Just got my Lenovo P2a42 , was playing with an app called " Activity launcher" to hide the screen orientation using demo mode activity, thus i got nosy some how .. and changed the band to USA without knowing .
end result which only happened on Sim Slot 1
1. i cant make or receive calls
2. can send SMS and access internet using sim slot 1
3. when making a call , a message appears :" cellular network not available"
I have tried other Sim cards on slot 1 , and nothing working (no calls)
tried slot 2 and all is working great
any suggestion on what to do to restore the phone Radio band to its non US band ? I am not located in USA , I'm in UAE
I'm on android Nougat , non-rooted , phone is carrier free
HELP HELP HELP

mysterious.one said:
Hello Professionals
I Just got my Lenovo P2a42 , was playing with an app called " Activity launcher" to hide the screen orientation using demo mode activity, thus i got nosy some how .. and changed the band to USA without knowing .
end result which only happened on Sim Slot 1
1. i cant make or receive calls
2. can send SMS and access internet using sim slot 1
3. when making a call , a message appears :" cellular network not available"
I have tried other Sim cards on slot 1 , and nothing working (no calls)
tried slot 2 and all is working great
any suggestion on what to do to restore the phone Radio band to its non US band ? I am not located in USA , I'm in UAE
I'm on android Nougat , non-rooted , phone is carrier free
HELP HELP HELP
Click to expand...
Click to collapse
At dialer press "*#*#4636#*#*" then phone information and press top right three dots. There is an option for area band. Choose your area. I'm not sure if this will solve your problem but try it

chtsarts said:
At dialer press "*#*#4636#*#*" then phone information and press top right three dots. There is an option for area band. Choose your area. I'm not sure if this will solve your problem but try it
Click to expand...
Click to collapse
Thanks for your prompt reply brother .. i have tried that , the only available band is USA .. nothing else

I have done the factory reset , didnt resolve it .. if any one can help , please do
read on some articles about flashing original radio .. any suggestions ? please help me

mysterious.one said:
I have done the factory reset , didnt resolve it .. if any one can help , please do
read on some articles about flashing original radio .. any suggestions ? please help me
Click to expand...
Click to collapse
Flash twrp recovery and flash either the stock rom or custom. Just google for the links. If your bootloader isn't unlocked you will have to wait 14 days. Hope it helps

i have sent the phone back to lenovo service center .. i just got the phone 8 days ago