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Wifi turns on by itself?

It seems that every time I plug my s4 in, it will turn on Wifi. Then when I turn Wifi off the phone tells me "unfortunately smcc service had stopped working". Is anyone else having this issue?
Sent from my SPH-L720 using xda app-developers app

I'm having a similar issue where it turns itself back on when it's turned off. This is happening even when it is not plugged in though I'm not seeing any errors when turning it off.

It is the Smart Mode located in Settings under Wifi.
Sent from my SPH-L720 using xda premium

That may be it. I just turned it off. We'll see what happens. Thanks!!!!!!!
Sent from my SPH-L720 using xda app-developers app

crawrj said:
It is the Smart Mode located in Settings under Wifi.
Sent from my SPH-L720 using xda premium
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Click to collapse
Ahhh! My brain fart has been sprayed with Lysol..! Thanks Crawrj!

If that doesn't work check for a setting called "Connection Optimizer." I haven't gotten my S4 yet but on other Sprint phones it is Settings > Mobile Data > Automatic Connections > Uncheck "Connection Optimizer"
It's supposed to intelligently determine when to turn wifi and 4g on and off. Connecting to wifi will save battery over mobile data so it is best to connect to it, that's probably why they have connection optimizer on phones.

crawrj said:
It is the Smart Mode located in Settings under Wifi.
Sent from my SPH-L720 using xda premium
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THANK YOU! After reading the description this does appear to be the culprit. And the longer you stay in one place(work) the more aggressive it seems to get.

ItsTommyGun said:
If that doesn't work check for a setting called "Connection Optimizer." I haven't gotten my S4 yet but on other Sprint phones it is Settings > Mobile Data > Automatic Connections > Uncheck "Connection Optimizer"
It's supposed to intelligently determine when to turn wifi and 4g on and off. Connecting to wifi will save battery over mobile data so it is best to connect to it, that's probably why they have connection optimizer on phones.
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It's not in 4.2 on our S4.
Sent from my SPH-L720 using Xparent Skyblue Tapatalk 2

Ya it took me a min to figure it out. It's designed to read your location and connect to wifi in areas your always connected to wifi. But if you wish to shut it go to too:
Settings > Wi-Fi > Smart Mode > turn off.
Sent from my SPH-L720 using xda premium

Thanks for this. I thought I was going crazy for a minute with wifi turning itself on.

Gam3r 4 Life said:
Thanks for this. I thought I was going crazy for a minute with wifi turning itself on.
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Me too. Thanks so much for this. It was driving me mad. Up next: preventing it from disconnecting because it feels the wifi is too slow. UGH. Walking around my building there are good spots and bad spots. If I sit in a bad spot too long I am disconnected with no hope for auto reconnecting. Maddening.

intron1 said:
Me too. Thanks so much for this. It was driving me mad. Up next: preventing it from disconnecting because it feels the wifi is too slow. UGH. Walking around my building there are good spots and bad spots. If I sit in a bad spot too long I am disconnected with no hope for auto reconnecting. Maddening.
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I have similar situation but its with dropping 4g to 3g, so I know your frustration.

DUH
crawrj said:
It is the Smart Mode located in Settings under Wifi.
Sent from my SPH-L720 using xda premium
Click to expand...
Click to collapse
Great info thanks.

Juice Defender vs. Smart Mode
I use the WiFi location-based trigger in Juice Defender instead of Smart Mode.
As I understand it, while Smart Mode tries to turn on WiFi for ALL of your common locations, JD can do this on a location by location basis. So, I don't like to be connected to WiFi at work, but I *do* at home. JD allows for this.
Sound right?
Thanks,
Eph

I have Smart Mode off - but Wifi still seems to come on at least once a day?
What else could be triggering this?

Aitch said:
I have Smart Mode off - but Wifi still seems to come on at least once a day?
What else could be triggering this?
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Click to collapse
Not to sure. Happens to me once in awhile too. I'll go to turn on Hotspot and it says it needs to turn wifi off when I have Smart mode off. [emoji85] [emoji86] [emoji87]

wifi always on

hi guys been using my data 98% of the day but it keeps saying my wifi is always on .anybody else get this , is there a solution?
Sent from my SM-N9005 using Tapatalk 2

stesteste said:
hi guys been using my data 98% of the day but it keeps saying my wifi is always on .anybody else get this , is there a solution?
Sent from my SM-N9005 using Tapatalk 2
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My Nexus 4 shows the same thing unless I actually turn off the wifi. I just leave my wifi on so when I come home it auto connects.

Weird minesays the same. I had my wifi off for at least 5hours
Sent from my SM-N9005 using Tapatalk 4

You have to go into WiFi settings and select one of the other features in advanced settings
TWEAKED 2.5

Because your WiFi radio keeps actively searching for an active signal unless you turn it off.

BACARDILIMON said:
You have to go into WiFi settings and select one of the other features in advanced settings
TWEAKED 2.5
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Click to collapse
I believe the option in the advanced settings is "Scanning always available". If you turn that option off it should stop.

stesteste said:
hi guys been using my data 98% of the day but it keeps saying my wifi is always on .anybody else get this , is there a solution?
Sent from my SM-N9005 using Tapatalk 2
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Simple, because the WiFi radio is on.

I have found WiFi battery usage to be very odd on the Note, at least Note 1. I used to have it turn off on screen off (settings default), but that caused battery drain. I then used Llama (Location Aware Mobile App?) to turn it off when the screen was off after a minute. Still drained.
I eventually left it on all the time I was at home or work, and it was much, much better. I guess going on and off all the time was the drag, or caused another issue.
I then used Llama to turn it off whenever I leave home or work, and turn it back on when I arrive. Happiness achieved.

I just drag down the notification bar and hit the toggle. One less active app to hog memory and battery...
Then again I also turn off mobile data when it is not needed. That spares me a full 4 days, and that's just on the s3. Imagine how long a note3 would last... (I'll know when my order finally arrives...)
Send From My Samsung Galaxy S3 Using Tapatalk 2

Thanks for this! I thought I was going crazy earlier as I knew I switched off wifi!!!
Got to work and saw it on lol!
Always scanning mode now disabled!
Sent from my SM-N9005 using Tapatalk 2

Wifi function fail (turning off involuntarily)

Anyone else having issues with the wifi turning off on its own? Got my S5 yesterday on AT&T. There have been a few times that the wifi will turn off and it can't be turned back on unless I restart.
I've experienced this with wifi settings as is out-of-the-box and when I changed the option to only have it on during sleep while plugged in.
Sent from my SAMSUNG-SM-G900A using XDA Premium 4 mobile app

natefish said:
Anyone else having issues with the wifi turning off on its own? Got my S5 yesterday on AT&T. There have been a few times that the wifi will turn off and it can't be turned back on unless I restart.
I've experienced this with wifi settings as is out-of-the-box and when I changed the option to only have it on during sleep while plugged in.
Sent from my SAMSUNG-SM-G900A using XDA Premium 4 mobile app
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Hmmm...i had none of the problem above. Maybe u should contact Att for an exchange. Must be something wrong with wifi module. Have u also tried to FS ?
Sent from my SM-G900F using Tapatalk

Wi Fi involuntarily turning off and cannot turn on without rebooting
I'm having the same problem. S5 goes to sleep when waking the wifi is switched off and I cannot turn it on in settings. I have to reboot

natefish said:
Anyone else having issues with the wifi turning off on its own? Got my S5 yesterday on AT&T. There have been a few times that the wifi will turn off and it can't be turned back on unless I restart.
I've experienced this with wifi settings as is out-of-the-box and when I changed the option to only have it on during sleep while plugged in.
Sent from my SAMSUNG-SM-G900A using XDA Premium 4 mobile app
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Click to collapse
Ambledown said:
I'm having the same problem. S5 goes to sleep when waking the wifi is switched off and I cannot turn it on in settings. I have to reboot
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Try this, go into settings, press wifi, then press the button consisting of 3 dots in the top right corner and then press advanced. where the settings state "keep wifi on during sleep", make sure it is set to always.
also check the wifi timer is not on either.
Let me know how you guys get on

Wi Fi involuntarily turning off and cannot turn on without rebooting
Thanks Natefish, you were right it's worked, no problem now, thanks again
:good:

Ambledown said:
Thanks Natefish, you were right it's worked, no problem now, thanks again
:good:
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Yes, that's the problem. It is fixed by not using the feature... Great, isn't it?

natefish said:
Anyone else having issues with the wifi turning off on its own? Got my S5 yesterday on AT&T. There have been a few times that the wifi will turn off and it can't be turned back on unless I restart.
I've experienced this with wifi settings as is out-of-the-box and when I changed the option to only have it on during sleep while plugged in.
Sent from my SAMSUNG-SM-G900A using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I have the exact same issue and am thinking to call warranty and see what they can do. This happens on any router, very annoying. You can avoid phone restarts btw, just put the phone in airplane mode and back in normal, when you do that it will be able to turn wifi back on. I am wondering is this bug on every att galaxy s5?
this bug occurs when you have the keep WiFi on during sleep option off. this saves a lot of battery, and to me avoiding this option isn't a fix to the problem, because on every android device I have I make sure WiFi turns off during sleep and never had issues reconnecting back when I wake up the device but galaxy s5 has that issue

Anyone having wifi issues?

So my wifi is working fine when I'm using the phone. But everytime I turn my screen off my wifi disconnects itself. I don't have any settings changed for that to happen. I actually have my wifi to always stay on during sleep.
I have attached some pictures. When the screen turns off the WiFi turns off after a few minutes. It shows my wifi and underneath it, it shows "internet not available". I then have to manually hit connect and my wifi reestablishs the connection. It's really tedious and I don't know what to do. Don't have this problem on my s6 edge or any other device. I've read it may be an issue with android 6.0.1 as many people with nexus 5x's and 6p's have the same issue. I've tried many things but nothing seems to work.

Do you have any apps that could be doing this (such as power saving apps)?

CuBz90 said:
Do you have any apps that could be doing this (such as power saving apps)?
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Nope. I've got around 15apps that I transferred over from my s6 edge and they're just your usual Facebook, Twitter etc. I have no idea why it's happening

Just to double check; when in the wifi settings, press more, then select "Keep wifi on during sleep" and check which option is selected...
Sent from my SM-G935F using Tapatalk

CuBz90 said:
Just to double check; when in the wifi settings, press more, then select "Keep wifi on during sleep" and check which option is selected...
Sent from my SM-G935F using Tapatalk
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Yh I have it set to always

Try changing it to never and let the screen go off. Then restart. Change it back to Always and see if that fixes it.
Sent from my SM-G935F using Tapatalk

I had a lot of problem with my S7 Edge and the only way I found to fix it was to remove the Mac Adress filtering on my router. Without it I have no problem, but with that security feature activated, the S7 was permanently losing the network and/or being terribly slow from timme to time when browsing.
Hope this helps

CuBz90 said:
Try changing it to never and let the screen go off. Then restart. Change it back to Always and see if that fixes it.
Sent from my SM-G935F using Tapatalk
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Didn't work. Appreciate the help

fastmike said:
I had a lot of problem with my S7 Edge and the only way I found to fix it was to remove the Mac Adress filtering on my router. Without it I have no problem, but with that security feature activated, the S7 was permanently losing the network and/or being terribly slow from timme to time when browsing.
Hope this helps
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Can I find how to do this on Google?

yvibes said:
Can I find how to do this on Google?
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Click to collapse
I believe that you mean you did not have to manually set your S7 Mac Address on your router? In that case, that feature is not activated otherwize you will not be able to connect at all... :fingers-crossed:

Same wifi issue here. I cannot download apps through Google play nor does Google photos backup.

If I select "Never" in "Keep my wifi on during sleep", wifi never disconnects when the screen turns off. Does it mean my S7 Edge never goes to sleep?
EDIT: Did a data factory reset and still the same behaviour.

wifi problem when screen off

Hello
The wifi goes off after 4 to 5 minutes when the screen goes into standby.
Spotify, sidesync, ... cuts
Even the ping no longer responds
If the screen remains on permanently or the phone is charging, no problem.
In the settings, the wifi is always activated
No battery power
Testing on several Internet networks
Has anyone ever had a problem?
thank you

Settings>WiFi>More>Keep WiFi on During Sleep
Sent from my Galaxy S7 Edge Duos via Tapatalk

chanchan05 said:
Settings>WiFi>More>Keep WiFi on During Sleep
Thanks you but This setting has always been activated
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me toooo!!!
Same issue here. Noticed it happening some time in November.
SM-G935F, stock, on DTM firmware. I can say that the issue started after receiving DTM OTA for G935FXXU1BPJK in Novemeber, and has continued after receiving DTM OTA for G935FXXU1BPLL a few weeks ago.
april29 said:
Hello
The wifi goes off after 4 to 5 minutes when the screen goes into standby.
Spotify, sidesync, ... cuts
Even the ping no longer responds
If the screen remains on permanently or the phone is charging, no problem.
In the settings, the wifi is always activated
No battery power
Testing on several Internet networks
Has anyone ever had a problem?
thank you
Click to expand...
Click to collapse
Been there, Done that, Doesn't matter... I've gone in and reset that setting at least a couple dozen times, to no effect. I've also tried rebooting into recovery and clearing cache before and/or after resetting WiFi Sleep. Nothing has fixed it. Only thing I can think of doing next is a restore/wipe via Odin.
chanchan05 said:
Settings>WiFi>More>Keep WiFi on During Sleep
Click to expand...
Click to collapse

If it occurred after an update, and cache cleaning did not help, the next step is a factory reset or Odin flash due to bad installation.
Sent from my SM-T231 using Tapatalk

I;n Also having this problem on my S7 Edge, tried a multitude of different steps including the powersaving features on an app by app basis, but nothing seems to help, even tried to get apps to force the wifi to stay awake but nothing has worked

Many phone have problem
https://www.facebook.com/s7EdgeWifiFail/
i use this app
https://play.google.com/store/apps/details?id=com.brilliant.apps.screenon
with this option "Decrease brightness to MIN" for not burn amoled