Develop Bugs

[Help] Lg G3 randomely swithch off problem.

Hello;
My lg g3 has some strange and weird problems.
First it switch off randomely and does not switch back on normally, so i have to plug usb cable connected with charger or pc and then press power on button and then it turns on.
secondly it looses signals where as other phones have full signals at the same place with same carrier.
it was on stock 10R but then i decided to root it and install custom rom that might solve the problem, so i downgraded to 10C (since rooting 10R is bit difficult), rooted and now installing TWRP. but still problem is same.
so i think this has nothing to do with rom. Please help me to solve this issue.
Thanks

same here
Hello. I have the same problem and i see that no one has answered yet so we are in a trouble isn't?

mustapha0087 said:
hello. I have the same problem and i see that no one has answered yet so we are in a trouble isn't?
Click to expand...
Click to collapse
i found its solution, it is kernel problem so i would suggest yu to try different kernels until the one suits your device. Now my device works fine.

Oh thank u my friend. Wich kernel is working with u now so i give it a try ?

LG G2 LS980/D802 touch screen working weird after upgrade to Lollipop

Hi, everyone.
I have just just purchased LG G2 LS980/D802 (I'm not sure) which was running on KitKat 4.4.2 perfectly but when I upgraded to Lollipop with a KDZ file (with LG flas too 2014) the screen started to act weirdly. After upgrading, on the very first screen I have to select language and go through all the procedure to activate my device but due to touch issue it was very difficult but I somehow managed to get through that process but the issue is still the same. As I touch an icon it touches the other area of the screen and an other app opens, the back, home, multi task buttons are also not working perfectly so I am in big trouble because I can not do anything thing with this set.
( I searched a lot on the internet and downloaded many KDZ and tot files and tried to get stock firmware(4.4.2) like
LS980ZV8_13 (tot)
LS980ZVA_01 (tot)
LS980ZVC_12 (tot)
LS980ZVE_03 (tot) and like so KDZ files also )
* the back cover says it is D802/ZNFD802
* I removed the back cover and on the inside body it is labelled as D801/D803
* I checked the IMEI on internet and one website says it LS980 and the other says it is D801
*=> After searching on the internet I found my phone is converted to D802 (I don't know why/how)
- I am badly stuck now and I don't know what to do because I do not have that much of knowledge to handle this issue.
- It is almost a weak i'm searching on the internet for the solution but I could not found any.
- I've also searched on this site a lot but could not found any appropriate solution ( so please do not refer me to other posts )
I humbly request all the experts, developers, members please help solving this problem I'm very much frustrated after a week of searching on the internet. Thank you.

no reply yet

i hav sm prblm
Aaryan-x said:
no reply yet
Click to expand...
Click to collapse
:crying::crying::crying: i hav sm prblm

D801,802,Ls980,Vs980,D803
Aaryan-x said:
Hi, everyone.
I have just just purchased LG G2 LS980/D802 (I'm not sure) which was running on KitKat 4.4.2 perfectly but when I upgraded to Lollipop with a KDZ file (with LG flas too 2014) the screen started to act weirdly. After upgrading, on the very first screen I have to select language and go through all the procedure to activate my device but due to touch issue it was very difficult but I somehow managed to get through that process but the issue is still the same. As I touch an icon it touches the other area of the screen and an other app opens, the back, home, multi task buttons are also not working perfectly so I am in big trouble because I can not do anything thing with this set.
( I searched a lot on the internet and downloaded many KDZ and tot files and tried to get stock firmware(4.4.2) like
LS980ZV8_13 (tot)
LS980ZVA_01 (tot)
LS980ZVC_12 (tot)
LS980ZVE_03 (tot) and like so KDZ files also )
* the back cover says it is D802/ZNFD802
* I removed the back cover and on the inside body it is labelled as D801/D803
* I checked the IMEI on internet and one website says it LS980 and the other says it is D801
*=> After searching on the internet I found my phone is converted to D802 (I don't know why/how)
- I am badly stuck now and I don't know what to do because I do not have that much of knowledge to handle this issue.
- It is almost a weak i'm searching on the internet for the solution but I could not found any.
- I've also searched on this site a lot but could not found any appropriate solution ( so please do not refer me to other posts )
I humbly request all the experts, developers, members please help solving this problem I'm very much frustrated after a week of searching on the internet. Thank you.
Click to expand...
Click to collapse
Ok I am Usman Ali mobiles phone software technician. I know your issue, if you can disassemble your phone you will find that inside your phone there is different model circuit installed, it may be 801,800,ls980,vs980 etc.. so whatever you find, then download that one firmware. and flash it. i already faced and solved this issue..

I know I have an ls980 converted to d802
I bought a d802, but when I opened the back cover, I got to know that it's an ls980 converted to d802. I wanted to install cloudy g2 3.3. Should I get rom for ls980 directly, or I have to install stock ROM first. Also if I install stock ROM, will it be sim locked? Are there any risks of phone being dead, or bricked? One of the technicians out there told me that I wouldn't be able to get the correct DLL file for stock ROM. Please help. Thanks in advance.

Problem on calling LG G3 F400k

Hi there developers. First of all sorry for my so bad bad ENGLISH.
So I have purchased a used LG G3 F400k Korean Variant with 3GB of RAM and 32GB ROM. When I first used the phone it runs stock lollipop and all seems working fine, not to mention it's Battery life and heating issue. Until then I got boring with its stock Rom, I rooted it and installed a Bumped TWRP via Flashify. The Flashify says I am installing a recovery that can replace my boot, but I still flashed it. It was succesful as it directly boot me into TWRP. Now when I tried to reboot it gives me an error boot like that and an infinite black screen with disco light led notification. I have no memory card yet and so I get my laptop and searched for its solution here on XDA. I flashed it using unofficial lg flash tool with 2 files such as ott and I forgot the other one. It was succesful an I reverted back to stock kitkat. And now the problem I faced is I CAN NO LONGER RECEIVE CALLS but I can make an outgoing call and it takes too long to ring when I am dialing and my network here has a menu when accessing *100# but it always failed and it gave me an invalid mme code or connection problem. I then flashed a twrp back and before I did that I have already downloaded the Fulmics Rom and flashed it through TWRP, thinking of the problem is by the rom itself. It was succesfull again. But then again my problem didn't solve by flashing another Rom.. And now I don't know what to do my imei is still here but still I have this problem. Would be appreciated if anyone would just reply to my thread and provide me some idea
Sorry I can't provide you screenshots coz I can't upload due to restrictions to a new members.

My Internet is so good. It's fast. Its LTE. I also turned off the VOLTE calling and Call forwarding or call rejecting. But still, my family is having problem contacting me because their call is directing to my Voice Mailbox. I tried putting my sim card in other phone and it's fine. I tried putting different SIM card to my phone and still facing the same issue. I think it's a hardware problem? Please help me.! I haven't tried bringing this to shop coz it's very expensive and thinking of someone could help me here instead. Please HELP!

Airplane mode on, network problem ZUK Z2

Hello, I'm having problem with my zuk z2. I've had phone for more than a month and it worked fine. I flashed mokee rom and was working excellent. After one update it couldn't connect to network and phone was stuck in airplane mode. It's not showing that airplane mode is on, only when I press power button it says it's on, but nothing happend when pressed. It detects both sim cards but can't get registered on network. Also in secret menu (*#*#4636#*#*) shows Radio off and can't turn it on, or change anything in that menu. I changed a lot of custom and stock roms, with locked and unlocked bootloader, nothing solved the problem. When flash fresh rom it has network (not after every flash), but after some times it just gets disconnected. Please, help me. If someone have solved this problem or have any idea what problem could be.
Edit: I found out that my sim slots IMEI change places, IMEI1 goes to slot 2.

i got the same problem

Same problem here with offician Indian ZUI

damn.. i thought this happened only with china rom.
didn't know it got same issue here.

Same problem

Same problem here. 2.0.133 ST official indian ROM. Any news about this problem?

I have the same issue running Slim 6 on zuk z2

i installed mokee os and the signal comeback again but actually not worked

Yes, I also installed mokee nightly 4/22 and its been working great. Signal is back

me too
Same problem Here.... bought on banggood and after one month network signal disappeared. Today I've unlocked the bootloader and installed Mokee stable ( 13-4-2017) and Lineage 14.1 of 16-01-2017 .... nothing! Still not working.
I suppose it is a failed lot from ZUK delivered from banggood/gearbest/ali ...
I've just wrote an email to zuk support in order to complain about it ...
Yes, because, right now I cannot send back in china at my expenses the equipment and pay for a substitution with another defective terminal.
I've just asked them hoto behave....
I suppose we need to start a class action like the one against samsung for S7 note
However, I'm very disappointed, 1 month and it was looking like a wonderful terminal ...fooooook.

Same problem here. Anybody please share the QCN backup (or valid link to download this) to try repair QCN and IMEIS ?

Same problem here:
I tested different roms and different baseband-versions still no network.
Edit: I also tried flashing it via an external tool - still does not work
http://www.androidbrick.com/zuk-z2-z2-pro-qpst-qfil-miflash-rom-flashing-guide/

I install the Z2plus_MIUI8_6.12.1_zukkati.zip ROM and recover the radios. I feel good!!!!!
Then I installed 2.5.334ST via Qfil, installed TWRP and install other ROMs and everything works fine.

Any Luck guys? Please help if anyone manage to resolve this issue.
Thank you!

Same with me
I had this problem also one month ago, bricked the phone and endly I could it get working again with lingeage on it. Was working perfect.
Today the problem is there again.
When I start the phone without the simcard airplane mode is off (when I touched the power button) with the simcard in the phone it starts with airplane mode on.
Is there a possibility to disable airplane mode complete?
Anyone any idea?

This problem has been around for ages, and no apparent solution to it. Sent it back to warranty and it got flashed frm Custom ROM and back to stock ROM with same results. Useless. Dead.
Got a partial refund instead .

Guys there is any solution?? I have this problem with my Zuk Z2.. Plz help me

Problem Solved
I also had same problem tried all methods described here and in zukfans.eu, but failed. At last discharging(shorting) some capacitor related to network IC did the job.

murtoz said:
I also had same problem tried all methods described here and in zukfans.eu, but failed. At last discharging(shorting) some capacitor related to network IC did the job.
Click to expand...
Click to collapse
hey, could you provide some more info? is it hard?

Same problem
I got the same problem, could someone help me with repairing this? Flashing roms didn't help
Could you say more information about discharging capacitor? Is it possible to do in home?

No signal, no wifi, no gps

Hello you guys!
I just received my lg g7 g710ulm. And when i turned on the phone i understood that im not lucky.. I need your helps! Please! Because i cant do it myself.
1. No signal. Don't search networks. Immediately getting error when trying to do it myself. "Preferred network mode" can't change due error and it showed "null". After reflashing it's now showing "22".
2. Don't see any wifi networks. But access point is working and other devices can see me.
2.1 I found that wifi going to work then i tried to use gps. After few seconds phone starting see wifi networks and connecting. If turn off wifi and turn on again phone don't see networks and you need to repeat procedure.
3. Looks like gps not working too.. But tried only in indoor.
I can't understand is it software or hardware issue. Maybe seller changed imei number and model by firmware and did it wrong? Antutu showing strange imei.
Can i to know somehow real model of phone? I can try to make logs and attached it here. Or maybe somebode can check imei, bands with octopus box? I dont know what to do
P.S. Bluetooth is working. Tried to send file and it was fine.
I can't return phone to shop because im living in different country But phone is amazing! And I loved lg. I had lg optimus one (was lost and back by good people), then lg optimus black(was burned in bonfire), lg g2(left in taxi), lg g6 (was lost) and finally lg g7. Yeah, looks like something wrong with me or these lg.. But i love it

Did you put in your SIM card first before you started...
I read you need to insert sim first but could be wrong.

sas007 said:
Did you put in your SIM card first before you started...
I read you need to insert sim first but could be wrong.
Click to expand...
Click to collapse
Sure, i did it. Anyway don't search networks. But what carrier of sim card and numbers into sim card, phone can recognise.
Maybe i wrote not understandable? My english not first language. So asking. I will try to explain.
Thanks for your reply.
I uploaded a log file with errors but cant to write here link, because i need 10 messages

My G710ULM's GPS stopped working 2 days ago, still trying to find out what's the cause of it. Tried apps like GPS Status, GPS Locker, no avail that it isn't picking any satellites at all. Just searching for GPS location. Restarting the device haven't helped either. In settings I even excluded all apps in Power Saving Exclusions. In GPS Status app, resetted and downloaded the A-GPS, this should surely make the GPS work. No success.

deonin said:
Hello you guys!
I just received my lg g7 g710ulm. And when i turned on the phone i understood that im not lucky.. I need your helps! Please! Because i cant do it myself.
1. No signal. Don't search networks. Immediately getting error when trying to do it myself. "Preferred network mode" can't change due error and it showed "null". After reflashing it's now showing "22".
2. Don't see any wifi networks. But access point is working and other devices can see me.
2.1 I found that wifi going to work then i tried to use gps. After few seconds phone starting see wifi networks and connecting. If turn off wifi and turn on again phone don't see networks and you need to repeat procedure.
3. Looks like gps not working too.. But tried only in indoor.
I can't understand is it software or hardware issue. Maybe seller changed imei number and model by firmware and did it wrong? Antutu showing strange imei.
Can i to know somehow real model of phone? I can try to make logs and attached it here. Or maybe somebode can check imei, bands with octopus box? I dont know what to do
P.S. Bluetooth is working. Tried to send file and it was fine.
I can't return phone to shop because im living in different country But phone is amazing! And I loved lg. I had lg optimus one (was lost and back by good people), then lg optimus black(was burned in bonfire), lg g2(left in taxi), lg g6 (was lost) and finally lg g7. Yeah, looks like something wrong with me or these lg.. But i love it
Click to expand...
Click to collapse
I can fix it. Send me a PM.

Resolution?
Hi in having the same issues with my G7 thinq... I was wondering if you guys found a resolution for this issue?

5centr5 said:
I can fix it. Send me a PM.
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Click to collapse
Hello expert. I have an LG G7 ThinQ ULM phone. The problem of this phone is no phone waves signal, 3G, 4G. (a week ago that is good). I think that because the SIM and insert this SIM into other phones, this SIM still works very well. So can you show me how to fix it? Thank you very much!
Note: I was try as below but not success
Go to the Home screen;
Tap on the Phone app;
Switch to the Dial pad;
Type in (*#*#4636#*#*) and just wait – the phone should automatically redirect you to the Service mode;
Once you’ve entered this new mode, tap on Phone Information or Device Information;
Tap on Run Ping test;
Look for the button labeled as Turn Radio Off and select it;
Wait for the phone to restart;
Tap on reboot.

Problem on LG G710ULM OF WIFI, GPRS, SIM CARD READING
Hello i have the same problem on my LG G7 i buyed this motherboard but just problem again . please if you find a way to fix this. someone tell me how to do it :highfive:

hello i have the same problem. no wifi, no network.. enable radio in service menu not resolved problem... any solution??

Solution? I have the same problem

I can fix it with TV for little bucks.

got the same problem after trying to update

I've got the same problem after flashing the android 10 update. Tried android pie and oreo but nothing helped. I will really appreciate any help as this is my daily driver.

my imei wifi mac still exist and working but the problem still persist
update:
finally got my network working all you need is an original qcn backup or flash original modem_a,b partition with QFIL if imei shows null use this tutorial to change ur origin imei/MEID, im not gonna give full tutor or the file since no one answered me, good luck.

kunarbale said:
my imei wifi mac still exist and working but the problem still persist
update:
finally got my network working all you need is an original qcn backup or flash original modem_a,b partition with QFIL if imei shows null use this tutorial to change ur origin imei/MEID, im not gonna give full tutor or the file since no one answered me, good luck.
Click to expand...
Click to collapse
hi, i need help, same mistake, i dont get a solution

Hi guys, I bring a solution to this problem, I found this topic: https://forum.xda-developers.com/t/no-signal-after-crossflashing.4089281/, you understood better by reading yourselves, but basically I flashed the rom with lg up chip erase mode and my wifi/data started working again, I know this is not recommended under any circumstances but it worked for me.

However, be aware that ChipErase mode not only erases IMEI numbers, but also erases MAC addresses, EFS partition and others. In many countries if your device does not have an IMEI number or other identifiers, SIM networks cannot allow (my case in Brazil it worked) for you to register with them, i.e. in most cases your sim will not work on the phone and you will not have cell service. You may still have issues with WiFi networks as without MAC addresses your WiFi will be grayed out or the network may not allow you to connect. Also, be aware that in many countries around the world knowingly tampering with or changing your phone's IMEI numbers is against the law. IMEI number is how networks and ultimately law enforcement identify the device and its owner

kunarbale said:
my imei wifi mac still exist and working but the problem still persist
update:
finally got my network working all you need is an original qcn backup or flash original modem_a,b partition with QFIL if imei shows null use this tutorial to change ur origin imei/MEID, im not gonna give full tutor or the file since no one answered me, good luck.
Click to expand...
Click to collapse
hi can i use this method to fix my wifi problem? my wifi cant be turn on at all after so many change of roms, it does work on every firmware i used. i need a help