LG G5 WiFi disconnects when screen is OFF after Oreo update, anybody else? - LG G5 Questions & Answers

Hi, I have the Tmobile version of LG G5 H830 and after android 8.0 Oreo update, the Wifi keeps disconnecting (it doesn't TURN OFF) some minutes after locking the phone, altough it seems like it would "turn off" bc when I unlock phone, it won't reconnect automatically, have to manually do so, network would say "saved" or "disabled". I'm not sure how long after screen off this happens but I'd say anywhere between 10-30 mins. YES, the "keep wifi ON when screen is OFF" option is enabled in "Advanced Wifi" settings. This is quite anoying bc my phone number and calls work on data/wifi (google number + hangouts) so I put my phone in airplane mode with wifi ON only when at home to avoid strong radio signal near my body so, if it disconnects, I wont get any calls or msgs or anything, might miss something important, plus, I use whatsapp web on laptop and every so often will say "phone not connected" and msgs wont update, cant send, etc, that's when I grab phone to reconnect it manually.
I just tried disabling the "keep wifi on when screen is off" setting and re-enabling it to see what happens, will let u know if fixed
Update: Confirmed, issue is still happening.
PD: Phone is not rooted, stock Tmobile ROM

try a soft reset followed by a lgup flash, see what happens

asomasotaso said:
try a soft reset followed by a lgup flash, see what happens
Click to expand...
Click to collapse
I noticed it only happens if the wifi signal is weak, say 1 bar. For now I'm just working on the reception, like leaving the phone nearer to modem and specially not covering it with anything. If it worsens I might try something drastic like that.
But hey, ty very much! Greetings from Cartagena, Colombia.
PD: I remember seeing an option in older android phones like Motorola DROID family I think they were android ICS, that said something like "skip weak signals" or smth similar and I always disabled it bc it would not connect to 1 bar signals, but I don't see such option or anything similar in this one. It seems to be in a: "skip weak signals when screen is off" mode.

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[Q] Wifi connection gets disabled on sleep...

I have a GTab runn Vegan 5.1 and it runs great. The one issue that I have is that my Wifi gets disabled each night when it goes to sleep. When I say "disabled" I do not mean this it disconnect, but rather that something is actually putting it into a "Disabled" state and I must select the connection and choose to enable it.
Does anyone have any thoughts on what could be doing this? I have dug through every setting I can think of and also looked at any apps that might be doing this. I even went so far as to remove all my battery saving apps, but no dice.
Any suggestions?
kmclaren said:
I have a GTab runn Vegan 5.1 and it runs great. The one issue that I have is that my Wifi gets disabled each night when it goes to sleep. When I say "disabled" I do not mean this it disconnect, but rather that something is actually putting it into a "Disabled" state and I must select the connection and choose to enable it.
Does anyone have any thoughts on what could be doing this? I have dug through every setting I can think of and also looked at any apps that might be doing this. I even went so far as to remove all my battery saving apps, but no dice.
Any suggestions?
Click to expand...
Click to collapse
Settings - Wireless - Wireless Settings - (Press Soft Menu Button, you will see Scan and Advanced buttons popup) - Advanced - Wifi Sleep Policy - Never
Still getting Wifi disabled...
MasterColdSoul said:
Settings - Wireless - Wireless Settings - (Press Soft Menu Button, you will see Scan and Advanced buttons popup) - Advanced - Wifi Sleep Policy - Never
Click to expand...
Click to collapse
Have the sleep policy set at never and this does not change anything. From what I understand this setting will disconnect wifi when the device goes to sleep. In my case the connection is not disconnected but rather completely disabled. So it seems that there is some other thing disabling the connection.
So, to give a bit more info here, I have installed wifi keep alive to try and save the connection. This keeps the wifi from being disabled when it is plugged in, but it still gets disabled when it sleeps and is also unplugged. (I.e. on battery and sleeping)
So, I am starting to think that the setting that fixes the problem while pluggedin is settings / applications / development / stay awake. I have this turned on and it seems that with stay awake and the wifi keep alive I am good when plugged in.
So, does anyone have thoughts for a similar setting when on battery power?
I can't help to much with battery power since I almost always have mine plugged in.
It's odd that not helping you, once I made that chance I stopped having my Wifi turn itself off (not sleep, off, and the tablet would need to be reset a lot).
Sorry that wasn't much help.
Having this problem as well. Anyone know how to fix?
If you notice other weird stuff happening in the future you may need to repartition your internal memory. Mine started with similar flubs and progressed to never remembering logins online. I had to login to xda every time I turned my device back on. Keep this in mind, about 30% of people need to reformat.
Sent from my Chromatic Magic using XDA Premium App
"WiFi stay alive" will help you!
Mantara said:
If you notice other weird stuff happening in the future you may need to repartition your internal memory. Mine started with similar flubs and progressed to never remembering logins online. I had to login to xda every time I turned my device back on. Keep this in mind, about 30% of people need to reformat.
Sent from my Chromatic Magic using XDA Premium App
Click to expand...
Click to collapse
can you give some info as to how one would go about doing this?
For what its worth, might help to set a fixed IP address. I often got a problem with Wifi not being able to reconnect because it got stuck on "getting an IP address" and failed to do so. I seem to remember it disabled the connexion to that AP after too many tries on my Nexus One.
On my g tablet, I was having what seemed to be the same problem, so I did the same thing and it seems stable since. Granted I didn't toy with it as much as I did on the N1, but I wouldn't be supprised if it were a general Android problem.
Anyways, its free to try.
The wireless uses a lot of power. When the tablet "sleeps", it should go into a power saving mode. Disabling the wireless is a feature, not a bug.
Either way how can I keep the wifi signal on so when i wake my g tab up the wifi is ready to go and does not have to reconnect?
anyone have anything to help with this?
I am not sure, but it seems to me that downloaded apps can play with wifi this way, as long as they have rights to "access internet, modify and bla-bla-bla".
I am having same problem after sleep. And it was not present from the beginning. It may starts after I upload some app. I will play with this after coming back home.
yes please let us know thank you!
wasserkapf said:
The wireless uses a lot of power. When the tablet "sleeps", it should go into a power saving mode. Disabling the wireless is a feature, not a bug.
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Click to collapse
When my tablet is plugged in and it goes to sleep, the Wifi also disconnects, so I don't think this is a feature any more than the screen angle issue is a "privacy feature." I've never had an Android device that powered down connectivity when the screen goes off, that totally negates the notification features. You basically have a comatose tablet after a few minutes of the screen being off.
I don't think the Xoom or Galaxy Tab have this problem, so there's definitely an issue. Sadly, I might be sending mine back to TigerDirect as faulty because of this.
I have this problem too. As others have said, the problem isnt that the wifi turns off when the tablet sleeps. The problem is the last connected access point gets disabled so when you wake, you have to go into settings and tell it to connect again.
In my case, it happens most of the time, but not always. My Android phone doesnt have this problem.
I did a factory reset, then used nvFlash to restore, and then did a fresh install of Vegan (thought it did the same on every other 2.2 ROM I tried). I didn't install any apps, and the problem still occurs. Tried using Wifi Fixer, and the problem still occurs (though on the bright side, it does reconnect about 10 seconds or so after waking).
I'm out of ideas. I hate to send this thing back because it's the most fun piece of tech I've had in years, but a comatose Android device is a dealbreaker Going to try a GB ROM, and then I give up.
I've got the same kind of issue. I lose my PSA key in my wireless settings every time and have to re-enter it.
I installed the Vegan GB ROM (along with pershoot's kernel), and the wifi stays on if you choose "Never" for wifi sleep (you have to hit the menu button and choose "Advanced" when you're in the wifi settings). Only problem is, the GB ROMs, while zippy, are a little raw right now, and my Launcher Pro GMail widget doesn't work
I'm going to try one of the 2.2 ROMs again today along with pershoot's Froyo kernel to see if it makes a difference.
Ok, YMMV, but I am using Calkukin's ROM with pershoot's kernel (was using Clemsyn's before), with wifi set to never sleep, and my wifi doesn't sleep any more. I left my phone and tab here at work while I went out for lunch (felt naked ...), and came back about 45 mins later, woke the tab, and wifi was still connected, without that "looks connected, oh the icon is now disconnected, oh it's back again!" bit.
I still receive notifications and email, and widgets update. Guess I'm keeping it

[Q] WiFi locks turning on, cell signal lost (sometimes comes back, or needs reboot)

Hello, folks!
I have a rooted I9100 (Android 4.0.3 stock from Vivo, baseband I9100VILP3, kernel 3.0.15-I9100VJLP7-CL371396 [email protected] #3, compilation IML74K.VJLP7, CSC I9100UVILP3).
Sometimes I have problems turning on WiFi, it keeps always turning on and neither become active nor allow me to turn it off again. I then need to reboot phone to fix it (when it reboots, WiFi comes turned on and gets on normally).
Another problem I have with it is that sometimes (average of 4 - 5 times a day) phone loses registration with carrier. It completely loses* signal and shows a "prohibited" icon where signal strength is shown at status bar. (Edit) Sometimes it comes back again in a few seconds and sometimes it stays at that state, making me have to reboot it to fix the problem (turning on and off airplane mode doesn't work; in fact, with registration lost and trying to use airplane mode, it doesn't turn off and only fixes with reboot).
*Actually, it doesn't lose signal (can be seen in "settings - about phone - state" screen uploaded), but only unregisters from carrier.
(Edit: screen/phone language is Brazilian Portuguese)
I've downloaded another modem driver but never had time to test it.
I don't know if both problems can have the same cause, but both of them are very annoying (especially signal loss) and I'd like to make some tries to fix them, so if anyone knows what can I do (even data collection to investigate them), your help is very appreciated.
Thanks
Additional test (ServiceMode)
When I was in the forum to post this thread, I've noticed this other thread and I've decided to use ServiceMode code (*#0011#) to investigate further at the next time my cell lose signal. Unfortunately, it showed absolutely nothing. Literally nothing (just "ServiceMode" caption and no text on the screen below).
I just spent the time to post this because I know that, even if it has shown no information (on screen), maybe it still can be a clue for the cause of the problem.
Thanks
Pls help!
Does anyone have some light to shed on this case?
Please, I do really need to fix it, at least the signal loss problem.
Thanks.
Same Issue in the US on Tmobile
Mine started doing this just a day or two ago. Exact same issue. I can kind of operate on the EDGE network but 4G fails, only WiFi seems to work. T-mobile doesn't seem to have a fix for it.
Changed to MIUI
I've just changed to MIUI (reflashed modem also – now it is ZSLPE instead of previous VILP3).
I still have issues with carrier register loss, but until now it always reconnected after a few seconds. Maybe it is a carrier issue and not a phone one.
I don't turn on WiFi a lot, but all times I've tested it, it worked well.
Another thing I've noticed with this change is that battery temperature while charging used to reach 48°C (118°F) or even 50°C (122°F) while battery level was low (less than 50%), but now it stayed around 35°C (95°F), which is completely acceptable.

(SOLVED) Wi-Fi turning itself off regularly. Is this a known bug???

Something that has been annoying me since the day I bought the tablet (LTE SPG 521)
When the tablet has been idle for a while, the WiFi turns itself off.
So whenever I pick it up without thinking, open chrome to start web browsing, I am connected to internet, and things are fine until I realise that I have been using 3G instead of WiFi.
Most of the time I need to go into shortcut quick access from pulling down top right corner and turn WiFi on.
Sometimes I need to go into WiFi settings and turn it on, even though the quick access shortcut says WiFi is on.
I do have stamina mode on, but have disabled every other power saving feature related to WiFi. In fact it is the same setting on my Z Ultra and Z1 Compact, but needless to say, I do not see this behaviour on my other sony devices.
But somehow on the tablet, WiFi does not auto connect, even in presence of a WiFi router that is set for auto connect.
Even If I was using the particular access point for WiFi connection, lets say I play games for about 30 minutes... the connection is lost and I need to go into WiFi settings to turn it on again (with the small slide to the right toggle switch within WiFi settings to turn on WiFi itself).
Anyone else experiencing this?
I would rather avoid it, since over usage on 3G for me means speed throttling later in the month...
P.S. Yes, I am on latest firmware 17.1.A.2.69
On Advanced WiFi, Keep wifi on during sleep is set to ALWAYS., avoid poor connection is turned OFF, and Wifi optimization is also OFF
Factory reset it? That's probably the first thing they tell you to do if you approach the technicians, if the problem still persist then demand for an exchange if not refund it.
I'd just bought mine today and unfortunately the bottom right corner the glass sticks out and it is pushable. I'm going to exchange it tmr.
Sent from my C6603 using XDA Premium 4 mobile app
Thanks for the idea, but no luck.
In any case each time I upgraded firmware, it should have sorted itself out, but problem still remains...
"Factory reset" is always the first "solution" you get by "technicians". Usually translates to: "Keeps the customer occupied for hours, silencing him."
Regarding the issue: I cannot confirm that, NO WLAN issues with my LTE Z2, it's just "always on", never losing the connection.
Chefproll said:
"Factory reset" is always the first "solution" you get by "technicians". Usually translates to: "Keeps the customer occupied for hours, silencing him."
Regarding the issue: I cannot confirm that, NO WLAN issues with my LTE Z2, it's just "always on", never losing the connection.
Click to expand...
Click to collapse
Do you have stamina mode ON?
With my other Xperias, the second I turn my screen on, the wifi is off/sleeping, but it launches and connects almost instantaneously. I guess the problem in my tablet is that it is not doing so, requiring me to do it manually...
I thought the FW for the tablet and the phone Z2 was the same? Maybe I should go and look in the forums over there...
I don't have the problem, either.
UPDATE
Problem Solved.
The cause was ad blocker app that I had installed, and it seems to me that whenever I was using certain apps that needed ad-blocking, all this thing would do is turn wifi off (but not 3g/LTE)
How Dumb is that?
Anyways, Wifi now always on even with stamina mode on.
Thanks for all who listened and threw suggestions!
Thanks
jewelkobayashi said:
UPDATE
Problem Solved.
Click to expand...
Click to collapse
Thank you very much for sharing this with us. Too many others just keep silent if they found the reason of their problems.

How can I disable the Connections Manager?

I set "Keep Wifi on during sleep" to "Always". I do this with all of my devices, as I like to have them connected to Wifi if it's available as soon as I wake it up.
However, the connection manager (or some other app/service) on the Desire seems to take control nearly every time I hit the power button. The phone comes on and I'll be connected to Wifi. But then it switches off and connects to the 3G/4G data signal for a few seconds. Then switches back to Wifi. This is especially annoying when I've already launched an app and it disconnects me.
I tried using Titanium Backup to "freeze" an app that is called something like Connection Manager, but this odd connection flip still occurs.
Does anyone know what is causing this and how I can fix it? I'm still on 4.2 if that makes a difference.
Thank you!
rubejb said:
I set "Keep Wifi on during sleep" to "Always". I do this with all of my devices, as I like to have them connected to Wifi if it's available as soon as I wake it up.
However, the connection manager (or some other app/service) on the Desire seems to take control nearly every time I hit the power button. The phone comes on and I'll be connected to Wifi. But then it switches off and connects to the 3G/4G data signal for a few seconds. Then switches back to Wifi. This is especially annoying when I've already launched an app and it disconnects me.
I tried using Titanium Backup to "freeze" an app that is called something like Connection Manager, but this odd connection flip still occurs.
Does anyone know what is causing this and how I can fix it? I'm still on 4.2 if that makes a difference.
Thank you!
Click to expand...
Click to collapse
I'm not sure how you do it after-the-fact but I know when I first setup the device on VM it popped up and you had to consent to use it and agree to the terms. If you say no to both of the those the app never bothers you again. I'm not sure how you get back into the app though to disable it after it being allowed to run.
You could try going to Settings -> Apps -> ALL and then force stop the program and clear all the cache/data/defaults maybe it will clear out your consent to use the program and your agreement to usage terms allowing you to say no the next time it runs.

WiFi disconnecting when screen is off

I'm trying to figure out if my Edge is bad. When I turn the screen off, and come back to the phone a few minutes later, I'll get a notification stating it has connnected to my router. I've checked the settings and it states the wifi is set to be always on. I attempted a factory reset and still no luck. Sometimes it'll take a few moments before it even connects to the wifi again upon turning the screen on.
Do I have a bad phone?
vaxick said:
I'm trying to figure out if my Edge is bad. When I turn the screen off, and come back to the phone a few minutes later, I'll get a notification stating it has connnected to my router. I've checked the settings and it states the wifi is set to be always on. I attempted a factory reset and still no luck. Sometimes it'll take a few moments before it even connects to the wifi again upon turning the screen on.
Do I have a bad phone?
Click to expand...
Click to collapse
I would check under the advanced settings for wifi, there's an option for what to do with wifi during sleep. That may be your problem.
I've already checked and it''s enabled.
vaxick said:
I've already checked and it''s enabled.
Click to expand...
Click to collapse
I have the same thing happening. I noticed when I was backing pics on one drive
. It would always say that back up has stopped because there was no WiFi After turning the screen on again.
I just got my Edge yesterday, and I am having the same problem with wifi AND also that it stops seeing any wifi and I have to toggle it off and back on manually THEN it will instantly connect to my known network.
Dear @vaxick,
Dial *#0011# and click on more>>WiFi>>"WIFI Power save mode" try to disable this option and see what happens.
*it might drain your battery faster.
Regards
bluff master said:
Dear @vaxick,
Dial *#0011# and click on more>>WiFi>>"WIFI Power save mode" try to disable this option and see what happens.
*it might drain your battery faster.
Regards
Click to expand...
Click to collapse
Thank you for this suggestion, unfortunately it had no effect as I have observed the same wireless disconnect behavior now with both the WiFi power save both on and off. Once the wireless disconnects it no longer see ANY wireless networks no matter where I go until I toggle the wireless off then back on again. Then it will see all wireless network present around me and instantly connect if there are any of my saved networks present. At this point I believe it is either a hardware or worse a software problem with my phone, but I am really at a loss to the exact nature of this issue.
Mine also has this issue when connected to 5GHZ SSID. Connecting to my 2.4GHZ SSID solves this problem completely for me
dazbutler1 said:
Mine also has this issue when connected to 5GHZ SSID. Connecting to my 2.4GHZ SSID solves this problem completely for me
Click to expand...
Click to collapse
I hope that this is a hardware issue with my phone, as your "solution" is totally unacceptable for me, especially since my work place has bandsteering AP's that use the same SSID's for both 2.4 and 5GHz.
Moguledyouth said:
I hope that this is a hardware issue with my phone, as your "solution" is totally unacceptable for me, especially since my work place has bandsteering AP's that use the same SSID's for both 2.4 and 5GHz.
Click to expand...
Click to collapse
Yeah, i have to turn WIFI off whilst at work for the same reason. Certainly hoping it's just a software bug and will be fixed quickly as it is by no means an ideal workaround
I also see this kind of problem since last 1 week, here is how i noticed. i user viber messaging app and it shows status online if you are connected. Lot of my friends started complaining that my status is not continuously online and fluctuating so i started doing tests.
Moment my display turns off i started counter and in 10 minutes my status changes as last seen and whenever i open viber app again i am online.
second test: i tried doing the same with whatsapp and connected at web.whatsapp.com and same thing happens within 10 mins i see yellow bar appearing that my phone is disconnected so again i have to open whatsapp on phone to reconnect.
this is very annoying to see this kind of problem on new phones, especially when old phones are working flawless.
Kind of the same problem, but with GPS. Once I disabled the battery saver mode, it stopped disconnecting. Have you tried that?
Are you referring to power saving mode in battery settings. i did check and they are turned off. No idea what else i am missing here.
I tried re-installing viber but still after 10 mins its keep disconnecting.
WiFi >> More >> Keep WiFi on during sleep >> Always
Problem solved
Sent from my SM-G925F using XDA Free mobile app
vvally said:
WiFi >> More >> Keep WiFi on during sleep >> Always
Problem solved
Sent from my SM-G925F using XDA Free mobile app
Click to expand...
Click to collapse
I'm having the same issue on my regular non edge s6. This settings is not doing anything have it on always still always drops the wifi when going to sleep. Its driving me crazy no idea why its doing this
i did check and i have Keep WiFi on during sleep >> Always option but still drops, no clue whats wrong with my phone.
I had the same issue and solved it by changing my routers security from WPA2/Mixed Mode to WPA2 Personal. Since this change, it works fine on both 2.4 ghz and 5 ghz.
dazbutler1 said:
Yeah, i have to turn WIFI off whilst at work for the same reason. Certainly hoping it's just a software bug and will be fixed quickly as it is by no means an ideal workaround
Click to expand...
Click to collapse
I received my Galaxy S 6 edge a week ago and I am having this same peculiar reconnecting issue to WiFi that has been described here.
Solution?
I was having this same issue and was unable to find any good solutions for it online, but eventually found something for me that worked through experimenting:
Find the above mentioned "Keep Wi-Fi on during sleep" option (which is probably set to "Always" already), change it to "Never", and then change it back to "Always". Since doing this I haven't had it disconnect from the wi-fi once, where as before it would do it everytime the screen had been off for a few minutes.
The problem started happening sometime after I played with power saver mode, so I think it might be related to that. I know that the software has some other bugs related to power saving mode, as I had a previous problem where my softkeys stopped vibrating or lighting up, which ended up being related to not exiting ultra power saving mode correctly and was fixed by going re-enabling ultra power saving mode and exiting again.

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