Develop Bugs

LG G4 Wifi not working and MAC address not found

Hi,
Need help from devs. My LG G4 wifi was causing some connection problem yesterday.. blinking icon and dropping connection... but today wi-fi completely stopped working. MAC address also shows unavailable. I have tried factory reset twice with no result.
Is the phone gone for good here or is there a solution via rooting or such?

exactly same problem after yesterday update. H815, just yesterday (before update - google patch) worked fine. After update wifi icon start blinking and after 5 mins displayed message 'searching wifi network'. but nothing happens, it even unable to display networks list. all solutions at forum (clear data for apps) are not working. Thinking to go to lg service center.

Same here. Was working then updated the phone now blinking icon and no mac address. Updated the firmware via my pc but still no luck. Its totally stock h815 and no idea why the fff its wifi is now broke??? please someone help with this issue if you can.

anybody have found a solution? Or only way to go to LG service center?
My model is LG G4 H815/EU

afsafs said:
anybody have found a solution? Or only way to go to LG service center?
My model is LG G4 H815/EU
Click to expand...
Click to collapse
Same Problem Here!! Any solution?

Not sure what's going on with your connection issues, but the MAC address will only show when WiFi is on.

96cobra said:
Not sure what's going on with your connection issues, but the MAC address will only show when WiFi is on.
Click to expand...
Click to collapse
Yes the wifi dosent turn on

same here now my phone wifi cant be used...
hoping you can help me regarding this

rabz_82 said:
Hi,
Need help from devs. My LG G4 wifi was causing some connection problem yesterday.. blinking icon and dropping connection... but today wi-fi completely stopped working. MAC address also shows unavailable. I have tried factory reset twice with no result.
Is the phone gone for good here or is there a solution via rooting or such?
Click to expand...
Click to collapse
Hello, I got the same problem and I maybe found a solution !
Thats what I did on my LG G4:
- Turn the airplane mode ON
- Reboot the phone
- Turn the airplane mode OFF
- Go to wifi settings and if the wifi is not activated, turn it on
- If the bug persist at this point, do the process again

This happened to me on Sprint variant. Did a factory reset and never got passed the Google setup. Had to return the phone

Anybody ever find a solution to this problem? I have contacted LG repair service but I have heard nothing back from them. Not what I wanted to do as my bootloader is unlocked...

darrenjdoc said:
Anybody ever find a solution to this problem? I have contacted LG repair service but I have heard nothing back from them. Not what I wanted to do as my bootloader is unlocked...
Click to expand...
Click to collapse
Hello, have you
Tried resetting phone??
Tried rebooting router??

Yeah, flashed a stock 5.1 kdz to see if it would help but still the same. I had flashed a 6.0 rom and it was working for a day and then the problem started. Flashing back to stock 5.1 didn't help.

The phone is getting picked up tomorrow and will be fixed within 5 to 7 days according to the email from LG. I just hope they will fix it because of the unlocked bootloader...

same problem here. very disapointed to lg. i heard that this is harware problem.
wifi icon keeps blinking. no warranty at all. bought in korea.

AymericM said:
Hello, I got the same problem and I maybe found a solution !
Thats what I did on my LG G4:
- Turn the airplane mode ON
- Reboot the phone
- Turn the airplane mode OFF
- Go to wifi settings and if the wifi is not activated, turn it on
- If the bug persist at this point, do the process again
Click to expand...
Click to collapse
Just wanted to thank you for this. Ive had this same damn problem for 2 days and this worked as a workaround. This was the second time the bug surfaced, the first time resolved itself after a day and a system update that was pushed to my phone right before the bug started. It was already downloaded so i just installed it and the bug went away. A week later the bug surfaces again and Im pissed off ready to take my phone in and i stumble on this. IT WORKED! Thanks again.

AymericM said:
Hello, I got the same problem and I maybe found a solution !
Thats what I did on my LG G4:
- Turn the airplane mode ON
- Reboot the phone
- Turn the airplane mode OFF
- Go to wifi settings and if the wifi is not activated, turn it on
- If the bug persist at this point, do the process again
Click to expand...
Click to collapse
I got this to work on my Wife's G4 when it was having the flashing WiFi issue, well, sort of. In addition to switching airplane mode on I had to toggle bluetooth and NFC, then all the sudden WiFi connected and stayed that way. I then rebooted and turned airplane mode off and everything seems to be ok now.

I have the same problem after updating my LG G4 to 6.0. The wifi is flashing and mac is bogus: 02:00:00:00:00:00. Bluetooth is also unavailable.
I contacted LG support and they told me to factory reset the phone. This did not make a difference.
Any updates on how to fix this?

AymericM said:
Hello, I got the same problem and I maybe found a solution !
Thats what I did on my LG G4:
- Turn the airplane mode ON
- Reboot the phone
- Turn the airplane mode OFF
- Go to wifi settings and if the wifi is not activated, turn it on
- If the bug persist at this point, do the process again
Click to expand...
Click to collapse
Thanks AymericM!!!!! This was driving me mad, and your strange tip worked, i can´t believe it!!

Rebooting is just a temp solution and doesn't always work.
No dev here have any permanent solution?
---------- Post added at 01:37 PM ---------- Previous post was at 01:14 PM ----------
Activate Developer options - tap Build No in About a few times
then in Developer Options - >> User legacy DHCP client
Reboot and try to connect

LG G4 H818P reboots when connected to internet

I need help with my LG G4 H818P, the phone reboots when I connect to internet. This happens with both Mobile Data and WiFi. I have V10L, Rooted, Xposed installed and activated, Viper4Android installed and activated.
The problem happens randomly, there is no specific time after which phone reboots after connecting to the internet. Some times it restarts immediately upon connection while sometimes once or twice in 30 minutes or so.
Please someone help me in pinpointing the issue. I can provide a list of all my software installed if any one wants to know that if any software is conflicting or doing this.
Any help will be appreciated.
Thanks

ehsan69 said:
I need help with my LG G4 H818P, the phone reboots when I connect to internet. This happens with both Mobile Data and WiFi. I have V10L, Rooted, Xposed installed and activated, Viper4Android installed and activated.
The problem happens randomly, there is no specific time after which phone reboots after connecting to the internet. Some times it restarts immediately upon connection while sometimes once or twice in 30 minutes or so.
Please someone help me in pinpointing the issue. I can provide a list of all my software installed if any one wants to know that if any software is conflicting or doing this.
Any help will be appreciated.
Thanks
Click to expand...
Click to collapse
Disable firmware auto update

still no effect
steadfasterX said:
Disable firmware auto update
Click to expand...
Click to collapse
I have already disabled the auto updates in settings>about phone>common>update center>software update, but the problem still remains
Also I have disabled auto updated by going to hidden menu by dialing 277634#*#>Field Test>WiFi Test>OTA Setting>Disable, but the problem still remains
p.s I rebooted the phone after applying both the above stated methods
Please help :crying:

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?

[help] oneplus 5t wifi mac/imei/baseband version comes and go automatically

I have oneplus 5T (A5010)
It has a abnormal problem.
The IMEI/MEID/Wi-Fi mac address and baseband version sometimes automatically shows unknown,0 and something like that.I have tried almost everything, but can't find a way to solve it.
Please devs. Help me up. Sometimes it AUTOMATICALLY shows up the correct imei and everything but when it's not shown up the sim can't be detected and the wifi can't be turned on.
Help me....

cva1675 said:
I have oneplus 5T (A5010)
It has a abnormal problem.
The IMEI/MEID/Wi-Fi mac address and baseband version sometimes automatically shows unknown,0 and something like that.I have tried almost everything, but can't find a way to solve it.
Please devs. Help me up. Sometimes it AUTOMATICALLY shows up the correct imei and everything but when it's not shown up the sim can't be detected and the wifi can't be turned on.
Help me....
Click to expand...
Click to collapse
Reset your device and check

surya nivas said:
Reset your device and check
Click to expand...
Click to collapse
Did everything related to software
Reset/sw update/even used the hydrogem os but non of them helped

Same problem randomly occurs with my Oneplus 6 device
KINDLY HELP

Question No Network Service after latest software update

Hello! I updated my phone to MIUI Global 13.0.7 Stable (SKHINXM) and suddenly my phone has no service. The sim card is fine and working on other phones like it was before the update. Really unable to fix this issue. If it helps, in the testing window the 'Mobile Radio Power' is toggled off and however many times I try to switch it on, it automatically switches off. Please help! Thanks

rishab298 said:
Hello! I updated my phone to MIUI Global 13.0.7 Stable (SKHINXM) and suddenly my phone has no service. The sim card is fine and working on other phones like it was before the update. Really unable to fix this issue. If it helps, in the testing window the 'Mobile Radio Power' is toggled off and however many times I try to switch it on, it automatically switches off. Please help! Thanks
Click to expand...
Click to collapse
13.0.7 Stable (SKHINXM) is a stable beta.
Try to reset the phone or if your bootloader is unlocked flash with this tool
https://forum.xda-developers.com/t/flash-tool-guide-use-xiaomi-flash-tool.4262425/

Will flashing the file lead to me losing all data? Apologies if it's a stupid question

rishab298 said:
Will flashing the file lead to me losing all data? Apologies if it's a stupid question
Click to expand...
Click to collapse
yeap ,use micloud, or Mi phone assistant or others to backup.(wifi).

NOSS8 said:
yeap ,use micloud, or Mi phone assistant or others to backup.(wifi).
Click to expand...
Click to collapse
Okay thank you! Will try it in a few days time once I am able to give it the time needed.

It is happening to me too, I'm on stock 13.0.4 SKHMIXM, bootloader locked, it happened in 13.0.3 too. Sometimes, I see I have no services, no data, no GPS. But WiFi works great, so if I'm in house I don't always see it, but it means I cannot receive call!!!
I tried to enable/disable sim/data/location/airplane/etc nothing works.
Only way to re-make it works is to reboot the phone, and after 2 or 3 weeks it will happen again, this is the price to pay to have cheap chinese phone...

Try booting into Android with Safe Mode. (and disable Airplane Mode if enabled)
Power + Volume Up > Safe Mode
Or try this:
Settings > Updater > Tap on the "13" several times, this will enable additional Updater-features. Download the latest package and install it.
My guess is that your update may have been corrupt.
Other than that.. Factory Reset or connecting phone to PC and flashing ROM using Fastboot & Mi Flash or Terminal.
I've 13.0.7 and everything's flawless.

So the Xiaomi service center told me that it is possibly a motherboard issue. How can a software update suddenly awaken a hardware issue?

So I had not unlocked my bootloader via my Mi account and it needs mobile data for the same and hence I am unable to flash it since my network is still unavailable even after a factory reset. Any other way I can flash my phone with an older version of MIUI or I will have to submit my phone to the service center?

rishab298 said:
So I had not unlocked my bootloader via my Mi account and it needs mobile data for the same and hence I am unable to flash it since my network is still unavailable even after a factory reset. Any other way I can flash my phone with an older version of MIUI or I will have to submit my phone to the service center?
Click to expand...
Click to collapse
I used Google phone to unlock the bootloader you don't need cellular service just change the account phone number to Google phone one to receive the code work ed for me

jefffrom said:
I used Google phone to unlock the bootloader you don't need cellular service just change the account phone number to Google phone one to receive the code work ed for me
Click to expand...
Click to collapse
Could you elaborate the whole process? I do not know how to do this. Thanks

Same issue i am facing after MIUI updation for 13.0.3.0 SJCINXM ... suddenly all networks are vanished ... if i do manual search for networks then i get a message 'Couldn't search for mobile networks' . Voice call is only possible if wifi is enabled.. This is really a horrible experience and i am unable to find out a way to get rid of this situation.. I am using Redmi 9 Prime handset .. Before this update everything was surperb and flawless.

It is still happening with the latest Android 13 and MIUI14, it's frustrating... sometimes when the phone switch wifi/lte/wifi/lte/etc when you go outside, the modem crashes, it internally bootloop and the phone becomes warm and can lose 25% battery in like 15 minutes. Only way is to reboot the phone.

I had a similar problem. Were you able to solve it?