Develop Bugs

Data Connectivity Issue on M8

So recently I bought this phone, it's a good phone but today I found out an issue, I don't know if' it's an issue or not but anyway.
I took data package from the carrier and carrier said the data package has been activated so I went to settings and activated Mobile Data but it says Disconnected, I tried restarting my phone but it still persists.
I tried changing the preferred network mode to every settings on the mobile.
Can anyone help me out ?
Thanks in advance

MJ999 said:
So recently I bought this phone, it's a good phone but today I found out an issue, I don't know if' it's an issue or not but anyway.
I took data package from the carrier and carrier said the data package has been activated so I went to settings and activated Mobile Data but it says Disconnected, I tried restarting my phone but it still persists.
I tried changing the preferred network mode to every settings on the mobile.
Can anyone help me out ?
Thanks in advance
Click to expand...
Click to collapse
Did you set the APN?

Sir-Fix-a-Lot said:
Did you set the APN?
Click to expand...
Click to collapse
FIXED IT GUYS
Yes,APN was the ISSUE
IFANYONE HAVE THIS ISSUES, JUST GO TO CARRIER WEBSITE AND ADD APN

Wrong thread.

[Q] Accidentally changed the freq bands via *#*#4636#*#*

Hi,
while i was messing around with the network setting via *#*#4636#*#* menu, I accidentally selected the USA bands, and it has caused me to not able to make any phone calls or even be connected to the network.
It does not allow me to change back to the default bands I was - international
Understand that this seems to be quite common mistakes across different devices.
But specifically for Desire 816, anyone can help me with this? My device is not rooted (i'd like to keep it taht way) and bought unlock.
Anyone? I'd be super grateful! Panicking like crazy right now...

lushtea said:
Hi,
while i was messing around with the network setting via *#*#4636#*#* menu, I accidentally selected the USA bands, and it has caused me to not able to make any phone calls or even be connected to the network.
It does not allow me to change back to the default bands I was - international
Understand that this seems to be quite common mistakes across different devices.
But specifically for Desire 816, anyone can help me with this? My device is not rooted (i'd like to keep it taht way) and bought unlock.
Anyone? I'd be super grateful! Panicking like crazy right now...
Click to expand...
Click to collapse
Hey its simple and worked on mine!
Got to *#*#4636#*#*, then enable Flight mode using the Power menu, or your status bar toggle, then click Select Radio Band and you should see Automatic, now before you select it, disable flight mode. Hope it works, else in order to reset RSD settings, you need to factory reset (unless u root ofc)

tpr0 said:
Hey its simple and worked on mine!
Got to *#*#4636#*#*, then enable Flight mode using the Power menu, or your status bar toggle, then click Select Radio Band and you should see Automatic, now before you select it, disable flight mode. Hope it works, else in order to reset RSD settings, you need to factory reset (unless u root ofc)
Click to expand...
Click to collapse
Thanks for the reply!
Tried it, but the automatic option did not show up on mine
So how do you factory reset? I did reset through the phone settings already, also tried recovery, none worked...

Help
Please help me same problem i m facing i need your help.. i changed slot 1 settings in *#*#*4636#*#* three months ago then network gone.. from that day i m using my sim in slot 2 and slot 1 is not detecting network. I tried changing settings those settings again also done hard reset but not working

After flashing CM-12, Both SIM are not working. Flashed stock L firmware but still problem is there... any solution?

Phone won't forget Wi-Fi network

Hello everyone,
My phone refuses to forget wifi networks. If I tell it to forget a network the next time I restart wifi it is known again. I tried to factory reset the phone but that didn't seem to help. Is there a way I can force it to forget all networks? or maybe remove it from a file somewhere? My phone isn't rooted.
Please let me know if you need any other info, thanks!

I'm having this exact same problem. I'm glad I didn't try a hard reset because I was about to. Hopefully someone knows the fix.

Do you have any solution for this problem ?

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

phone keep turning off itself

my phone suddenly start to turning off by itself after few minutes of every startup.
And the phone doesn't recognize the sim cards too. Then I put it to flight mood and the problem solved. If I off the flight mood then again the phone turn off after few minutes.
I factory reset and also flash different roms. But nothing changed.
I can use phone without any issue with the flight mode on.
Anyone have a idea about the cause of this issue?

shameen4m said:
my phone suddenly start to turning off by itself after few minutes of every startup.
And the phone doesn't recognize the sim cards too. Then I put it to flight mood and the problem solved. If I off the flight mood then again the phone turn off after few minutes.
I factory reset and also flash different roms. But nothing changed.
I can use phone without any issue with the flight mode on.
Anyone have a idea about the cause of this issue?
Click to expand...
Click to collapse
What ROM are you using?

v6ser said:
What ROM are you using?
Click to expand...
Click to collapse
Now I'm using CUOCO92 14s. I also tried the official rom & cyanogenmod. But the problem is there.

shameen4m said:
Now I'm using CUOCO92 14s. I also tried the official rom & cyanogenmod. But the problem is there.
Click to expand...
Click to collapse
It's very likely that it might be the baseband or wifi driver, i had the same problem a while ago but i can't remember how i fixed it now. Probably flashing the original baseband. Maybe also by changing sim settings typing *#*#4636#*#* on phone application. Tell me what you see doing that.
One more question, did you mess with Nvram?

Actually I don't know about Nvram. I didn't mess with it intentionally. I don't know if something happened. Is there a way to check it?
Please help me. I don't know what to do exactly. What settings should I change by typing *#*#4636#*#* ? Thank you for trying to help me

v6ser said:
It's very likely that it might be the baseband or wifi driver, i had the same problem a while ago but i can't remember how i fixed it now. Probably flashing the original baseband. Maybe also by changing sim settings typing *#*#4636#*#* on phone application. Tell me what you see doing that.
One more question, did you mess with Nvram?
Click to expand...
Click to collapse
Actually I don't know about Nvram. I didn't mess with it intentionally. I don't know if something happened. Is there a way to check it?
Please help me. I don't know what to do exactly. What settings should I change by typing *#*#4636#*#* ? Thank you for trying to help me

shameen4m said:
Actually I don't know about Nvram. I didn't mess with it intentionally. I don't know if something happened. Is there a way to check it?
Please help me. I don't know what to do exactly. What settings should I change by typing *#*#4636#*#* ? Thank you for trying to help me
Click to expand...
Click to collapse
No problem
Go into phone information change your current band settings to GSM/CDMA/LTE auto then restart, see if it works if it was already set to this option try changing to another setting. Btw you can't check nvram if you didn't touch it, don't worry

v6ser said:
No problem
Go into phone information change your current band settings to GSM/CDMA/LTE auto then restart, see if it works if it was already set to this option try changing to another setting. Btw you can't check nvram if you didn't touch it, don't worry
Click to expand...
Click to collapse
By changing band settings phone keeps turn on without airplane mood. It didn't turn off automatically. But No reception for both sims.

shameen4m said:
By changing band settings phone keeps turn on without airplane mood. It didn't turn off automatically. But No reception for both sims.
Click to expand...
Click to collapse
At least it's on!
Now we can work out the solution, make a logcat and post here.

Its just a rubbish phone! I really regret buying this phone!!