[Q] Forgets wifi networks? - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

I have a new AT&T Galaxy S4. It's not rooted or anything. It's stock.
I connect to my home Wifi in the evening. During the day at work, I turn off Wifi and use LTE. When I get home and I turn Wifi back on, it has forgotten my Wifi network. This is without restarting the phone or anything.
Has anyone else noticed this? I have never had this issue on an Android phone.

greyhulk said:
I have a new AT&T Galaxy S4. It's not rooted or anything. It's stock.
I connect to my home Wifi in the evening. During the day at work, I turn off Wifi and use LTE. When I get home and I turn Wifi back on, it has forgotten my Wifi network. This is without restarting the phone or anything.
Has anyone else noticed this? I have never had this issue on an Android phone.
Click to expand...
Click to collapse
How are you turning off WiFi? Are you disconnecting it and then turning it off? Or just turning it off?

hyelton said:
How are you turning off WiFi? Are you disconnecting it and then turning it off? Or just turning it off?
Click to expand...
Click to collapse
I'm just toggling it using the toggle in the notification shade.
I have also noticed that the list of Wifi networks is huge, including Wifi networks that are not even in range and it doesn't seem to be prioritizing the ones that have the strongest signal. I manually created a wifi network with the info for my router and have toggled it off and on a few times and it's connecting automatically, but I shouldn't have had to do this.

greyhulk said:
I'm just toggling it using the toggle in the notification shade.
I have also noticed that the list of Wifi networks is huge, including Wifi networks that are not even in range and it doesn't seem to be prioritizing the ones that have the strongest signal. I manually created a wifi network with the info for my router and have toggled it off and on a few times and it's connecting automatically, but I shouldn't have had to do this.
Click to expand...
Click to collapse
The "List" of wifi networks that are huge are networks you HAVE connected too in the past...
Say you come to my house and Connect to my Network. You Come back home your still gonna see my network in that list, as you had connected to it before... its like that with EVERY phone and device that connects to wifi. If you want them gone just click on them and select forget.

hyelton said:
The "List" of wifi networks that are huge are networks you HAVE connected too in the past...
Say you come to my house and Connect to my Network. You Come back home your still gonna see my network in that list, as you had connected to it before... its like that with EVERY phone and device that connects to wifi. If you want them gone just click on them and select forget.
Click to expand...
Click to collapse
I have never connected to most of the networks listed and this is new out of the box.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

greyhulk said:
I have never connected to most of the networks listed and this is new out of the box.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
Did you log into a Google Account you have used Previously on another phone? If you did NOT uncheck the box when signing into google it will sometimes load the networks you had from an older phone. If not then your phone is NOT NEW

It's definitely new. It came out of a sealed box. I did restore an old account. Thing is, I can't "forget" any of those networks. It's not an option.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

greyhulk said:
It's definitely new. It came out of a sealed box. I did restore an old account. Thing is, I can't "forget" any of those networks. It's not an option.
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
thats very odd you might just need to reform a factory reset.

new S4 forgetting wifi networks
Having the same issue here, occasionally I will walk into the house or the office to find that the S4 has forgotten the network key and I have to type it in again manually.
I leave wifi turned pretty much all the time and when it's working right it logs on to which ever router is in range. Unfortunately most of the time it's not working right & I'm doing a lot of typing.
Have done a factory reset with no effect.
Any thoughts would be VERY welcome.
Jon

Give a try to this: http://forum.xda-developers.com/showpost.php?p=51180156&postcount=2
This method works with my I337 NI1 Unlocked Rooted. I uses ES Explorer with Root Explorer enabled.
I went to the "system " folder in the device, scrolled down until I found "build prop" then edited using ES Explorer Note Editor.
Greatly appreciated and high credit to dajumper's work !!

yhendra said:
Give a try to this: http://forum.xda-developers.com/showpost.php?p=51180156&postcount=2
This method works with my I337 NI1 Unlocked Rooted. I uses ES Explorer with Root Explorer enabled.
I went to the "system " folder in the device, scrolled down until I found "build prop" then edited using ES Explorer Note Editor.
Greatly appreciated and high credit to dajumper's work !!
Click to expand...
Click to collapse
+1 on this, I solved the same issue with it.
Sent from my SGH-I337

Related

[Q] Disabling WiFi network scanning...

I was wondering, is it possible to "disable" WiFi scanning once connected to a preferred network? I'm just guessing but does it use so little memory/battery to continually scan every few seconds that nobody has bothered to develop a script or app that allows this to be done?
I had a quick search on Google and the forums here but yielded little to go on.
I'm using a custom ROM atm based on Froyo 2.2.1.
Any help would be ideal. Thanks!
depending on your phone,cant you uncheck "notify me when an open network is available"?
turbo614 said:
depending on your phone,cant you uncheck "notify me when an open network is available"?
Click to expand...
Click to collapse
Unchecking this doesn't stop it from scanning, it just stops it from notifying you of an open network. It will still scan around.
I'm guessing the answer is no then?
Not to worry. Thanks.
Davey Boy said:
I'm guessing the answer is no then?
Not to worry. Thanks.
Click to expand...
Click to collapse
Once you're connected to a network it does not scan for new networks unless you're on the networks screen and then it will scan for them. Close the screen and it stops scanning.
Superorb said:
Once you're connected to a network it does not scan for new networks unless you're on the networks screen and then it will scan for them. Close the screen and it stops scanning.
Click to expand...
Click to collapse
I would argue that. Phones differ for sure, but mine (Eris) scans for networks and puts an icon in the status bar showing available networks if I leave wi-fi turned on. If I then open the networks screen it will show me all available networks, locked and open, but it scans regardless. It does use battery power, but a relatively small amount.
PieceKeepr said:
I would argue that. Phones differ for sure, but mine (Eris) scans for networks and puts an icon in the status bar showing available networks if I leave wi-fi turned on. If I then open the networks screen it will show me all available networks, locked and open, but it scans regardless. It does use battery power, but a relatively small amount.
Click to expand...
Click to collapse
It does scan, but not constantly. Something like every few minutes or so. Maybe it's just the ROM I'm running that does this though.
Yea, my phone notifies me of available networks within range, whether on the Wi-Fi screen or not.
While I appreciate the battery/memory usage may be minimal, with the aim of optimizing my phone, an app that could disable/enable Wi-Fi scanning would be great. Am I the only person who thinks this?! Lol.
Sent from my GT-I9000 using XDA App
Davey Boy said:
Yea, my phone notifies me of available networks within range, whether on the Wi-Fi screen or not.
While I appreciate the battery/memory usage may be minimal, with the aim of optimizing my phone, an app that could disable/enable Wi-Fi scanning would be great. Am I the only person who thinks this?! Lol.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
I agree. I only use wifi when I'm at home. I also use Green Power, and that will disable wifi if 3g is enabled. When connected to wifi my ROM will still scan for new networks every few minutes. I'd like a way to completely disable wifi scanning.
@Davey Boy
I too wonder about this. Like you, when on the wifi settings page it seems to scan every 12 seconds or so even though I am connected to my home network. People have said that it only does this when in that particular screen but how do they know this?
I would like to think they are right but is there any way to prove it?
Please let me know if you get anywhere with this.
Yea unfortuately all wifi connections scan due to ip leases. Depending on the router after a certain amount of time in dhcp mode your ip address expires and then is re-issued. Another reason the wifi card pings the router to ensure the connection is still alive. So honestly to stay connected the wifi needs to scan.
wranglerray said:
Yea unfortuately all wifi connections scan due to ip leases. Depending on the router after a certain amount of time in dhcp mode your ip address expires and then is re-issued. Another reason the wifi card pings the router to ensure the connection is still alive. So honestly to stay connected the wifi needs to scan.
Click to expand...
Click to collapse
Pinging the router every few minutes is different from scanning for networks. Also, lease time is normally 24+ hours, so there is no need to constantly scan for networks or ping the router.
carlos67 said:
@Davey Boy
I too wonder about this. Like you, when on the wifi settings page it seems to scan every 12 seconds or so even though I am connected to my home network. People have said that it only does this when in that particular screen but how do they know this?
I would like to think they are right but is there any way to prove it?
Please let me know if you get anywhere with this.
Click to expand...
Click to collapse
I too am wondering why we can't specify a prefered network and not bother scanning for others! I also have to kill wi-fi sharing service (with android optimizer) everytime I enable wi-fi
I have same problem after upgrading to 2.3 Wi-Fi shown as it is Active, but it is turning off and on and scaning and off again all times
hellllllllllllllllllllllllllllllllllllllllllllllllllllllllp hellllllllllllllllllllllllllllllp
heeeeeeeeeeelp
helppppppppppppppppppp
I have same problem after upgrading to 2.3.5 Wi-Fi shown as it is Active, but it is turning off and on and scaning and off again all times
sorry...........
Old topic but still interested. Any workaround found?
You can change the speed to a ridiculous amount of time. In your build.prop WiFi.supplicant.scan.interval should be set to a number of seconds. It is not advised to say change it to 24000000000000. Or something insane because if u lose signal it won't be reconnecting for you until that time is up.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Wi-Fi settings stored where?

I'm trying to find out where my phone stores Wi-Fi networks that I've added. When I turn Wi-Fi on, my Wi-Fi Settings stops responding and I can't do anything on that screen.
If it matters, I'm running CyanogenMod 7.0.0 and faux123's low-voltage kernel version 2.4.8.
jdkoren said:
I'm trying to find out where my phone stores Wi-Fi networks that I've added. When I turn Wi-Fi on, my Wi-Fi Settings stops responding and I can't do anything on that screen.
If it matters, I'm running CyanogenMod 7.0.0 and faux123's low-voltage kernel version 2.4.8.
Click to expand...
Click to collapse
i cannot answer your question to where the information is stored... but the only way i've got wi-fi settings to stick is to input the password for the SSID then when it disconnects turn off mobile data then reboot. The phone should connect to the Wi-fi and it will continue to.. a bit a trouble but it's a work around.
neidlinger said:
i cannot answer your question to where the information is stored... but the only way i've got wi-fi settings to stick is to input the password for the SSID then when it disconnects turn off mobile data then reboot. The phone should connect to the Wi-fi and it will continue to.. a bit a trouble but it's a work around.
Click to expand...
Click to collapse
Actually, what I want to do is remove some networks that I've previously added manually. I think it's trying to connect to them, which is not possible because those networks were ones I was using while traveling.
jdkoren said:
Actually, what I want to do is remove some networks that I've previously added manually. I think it's trying to connect to them, which is not possible because those networks were ones I was using while traveling.
Click to expand...
Click to collapse
brings a different light to the situation. That i cannot answer you.
Bumping because I still haven't found anything on this.

Wifi Not Working When Phone Sleeps

I posted a thread earlier about this but I still haven't found any answers. I have an AT&T Galaxy S4 and I am having some issues with WIFI. I can connect to any wireless network and browse the web, etc. but if I ever hit the power button to lock the phone or the phone falls sleep on its own accord, when I unlock the phone, it shows that it's still connected to the network, but it takes around 30 seconds before I can browse the web, etc. again and many times it will kick me off the network. It's not isolated to this network or this phone. My original phone worked for about two weeks and then the problem came up and I actually reset my original phone and it got rid of the problem for a few days but the problem came back. Then, I got a new phone through AT&T's warranty replacement service and it worked fine for about three days but then the problem came up. My phone is set to always have wifi on during sleep and I've even turned the wireless power saving mode off in the hidden settings menu. So, it's not a hardware issue (it's very unlikely that two phones have the same issue), it's not a OS issue (or there would be more documented cases of this), so I'm thinking it must be an app that's causing it. Can anyone offer any insight on this issue? I rooted the phone just so I can record some logs so I have those if that would help.
Anyone?
theloneranger08 said:
Anyone?
Click to expand...
Click to collapse
Honesly it sounds like a router issue.
Factory Reset it
Update it's Firmware if possible
Set it back up with WPA2 (AES)
DirtyOldMan said:
Honesly it sounds like a router issue.
Factory Reset it
Update it's Firmware if possible
Set it back up with WPA2 (AES)
Click to expand...
Click to collapse
Here's what's weird though.
Reasons that it's not a router issue:
1. It worked on two routers (a netgear and a AT&T Uverse gateway router) for a little while but now it doesn't work on either of them (by work I mean the phone experiences the problem mentioned).
2. I did a factory reset on the first phone I had and that fixed the problem for a few days on the netgear router. After a few days, the problem came back and I could no longer browse the web after I locked my phone. When I came home, the problem occurred with the AT&T Uverse router as well.
Reasons that it is a router issue:
1. My phone worked on the network at the bestbuy I went to yesterday.
2. The phone worked on the network at my company today.
I'm just completely out of ideas. If it were router related, why wouldn't it affect my brother's phone? If it weren't router related, why does it not affect the bestbuy and company routers?
theloneranger08 said:
Anyone?
Click to expand...
Click to collapse
I think this will help.
It might be the power save option that is enabled in wifi settings.
To access this do the following:
Dial *#0011# in dialer to access hidden service menu.
Press the menu key
Select WIFI
Turn Wifi Powersave to OFF
Should fix it. I had the issue with a particular router and this solved my problem.
Just remember to do this after every reboot.
Blue1k said:
I think this will help.
It might be the power save option that is enabled in wifi settings.
To access this do the following:
Dial *#0011# in dialer to access hidden service menu.
Press the menu key
Select WIFI
Turn Wifi Powersave to OFF
Should fix it.
Just remember to do this after every reboot.
Click to expand...
Click to collapse
Yeah I've tried that. It didn't fix the issue.
theloneranger08 said:
Yeah I've tried that. It didn't fix the issue.
Click to expand...
Click to collapse
Weird. And a factory reset fixed this in the past?
Sent from my SGH-I337M using xda premium
Blue1k said:
Weird. And a factory reset fixed this in the past?
Sent from my SGH-I337M using xda premium
Click to expand...
Click to collapse
yeah but only for a few days, never permanently. I've never been more frustrated with a phone...

[A] Solve the problem with wifi note 3 !!!

for those problems on WiFI and specifically results indicating coupling and removing the connecting to go in:
SETTINGS
WIFI
ADVANCED
Uncheck "AUTOMATIC SWITCHING BETWEEN WIFI NETWORKS AND MOBILE NETWORKS"
If You Must give me a thanks or donate me
Lupokkio
lupokkio said:
for those problems on WiFI and specifically results indicating coupling and removing the connecting to go in:
SETTINGS
WIFI
ADVANCED
Uncheck "AUTOMATIC SWITCHING BETWEEN WIFI NETWORKS AND MOBILE NETWORKS"
If You Must give me a thanks or donate me
Lupokkio
Click to expand...
Click to collapse
I would hope most people would have tried that long before coming to the forum to complain about the issue.
The issue is WiFI closing & not auto signing back in whether mobile data is on or not.
It's simple option is in settings wifi
Yes the switch is simple but has nothing to do with the "closing WiFi" issue some are experiencing.
BUT I DO NOT KNOW Enabling this option AS MANY PEOPLE WHO HAVE THE FOLLOWING HAVE SOLVED MY GUIDE
lupokkio said:
BUT I DO NOT KNOW Enabling this option AS MANY PEOPLE WHO HAVE THE FOLLOWING HAVE SOLVED MY GUIDE
Click to expand...
Click to collapse
Guide .. ? What are you talking about. It's clearly a menu option in the settings. It's not like it's hidden lol
Sent from my SM-N9005 using xda app-developers app
unchecking this doesnt do nothing....im sitting across from my router and its telling me my signal is weak.
Browsing on vzw 4g lte is faster than my 50mb comcast wifi connection? lol if i browse with wifi its a slow lag.
Same for me. Moreover, with the new firmware, if it loose the connection while the option is unticked, it says that it will be re-ticked automatically...
This WiFi bug is really annoying.
My phone has stopped dropping the connection & is behaving well. But I have no idea what solved it. I factory reset router & phone. But it made little difference but after a day it's behaving perfectly & it's currently on my wifi & has not dropped for 12 hrs & no more constant pop up messages.
I have no idea what cured it. But one thing I did last night was went to play store & updated every app on the phone.... maybe there was a conflict in one of those apps.. that's all I can think. I left "adblock" off this time as that routes wifi data but I'd removed that several days ago.
Sent from my SM-N9005 using xda app-developers app
sfld said:
unchecking this doesnt do nothing....im sitting across from my router and its telling me my signal is weak.
Browsing on vzw 4g lte is faster than my 50mb comcast wifi connection? lol if i browse with wifi its a slow lag.
Click to expand...
Click to collapse
Pat. said:
My phone has stopped dropping the connection & is behaving well. But I have no idea what solved it. I factory reset router & phone. But it made little difference but after a day it's behaving perfectly & it's currently on my wifi & has not dropped for 12 hrs & no more constant pop up messages.
I have no idea what cured it. But one thing I did last night was went to play store & updated every app on the phone.... maybe there was a conflict in one of those apps.. that's all I can think. I left "adblock" off this time as that routes wifi data but I'd removed that several days ago.
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
Try hitting
*#0011# from the phone dialer.
It brings up a hidden menu. Turn off "WIFI POWER SAVE MODE"
seoulbrova said:
Try hitting
*#0011# from the phone dialer.
It brings up a hidden menu. Turn off "WIFI POWER SAVE MODE"
Click to expand...
Click to collapse
Must be for gsm only im on vzw and cant access that
sfld said:
unchecking this doesnt do nothing....im sitting across from my router and its telling me my signal is weak.
Browsing on vzw 4g lte is faster than my 50mb comcast wifi connection? lol if i browse with wifi its a slow lag.
Click to expand...
Click to collapse
I'm curious what Access Point you are using and how old it is? Are there firmware updates for it that you have not applied?
I've read somewhere that cancel all existing WiFi connections and make them as new (with the new firmware), could be of help. I'll give it a try.
Inviato dal mio SM-N9005 con Tapatalk 4
---------- Post added at 07:25 PM ---------- Previous post was at 07:19 PM ----------
seoulbrova said:
Try hitting
*#0011# from the phone dialer.
It brings up a hidden menu. Turn off "WIFI POWER SAVE MODE"
Click to expand...
Click to collapse
I've found the menu bit how to turn off the power save mode? No toggles there. ..
Inviato dal mio SM-N9005 con Tapatalk 4
Wifi problem
I've tried all the solutions on here,and nothing works. Very poor samsung for such an expensive device. If a £30 roku box can have perfect wifi why can't a £600 device
I must admit that wifi performance is quite poor for the moment.
I get 6 or 7 Mb/s out of a 25 Mb connection. My S4 , Note 1, and Ipad 3 al do around 20Mb/s while testing simultaneously
seoulbrova said:
Try hitting
*#0011# from the phone dialer.
It brings up a hidden menu. Turn off "WIFI POWER SAVE MODE"
Click to expand...
Click to collapse
what does change if i turn it off? what's the use off the power save mode? i know it's to reduce the power ussage, but i want details.
thanks
Kefienator said:
what does change if i turn it off? what's the use off the power save mode? i know it's to reduce the power ussage, but i want details.
Click to expand...
Click to collapse
You can probably find what it does on the Internet (Google), but it doesn't truly help. My guess is that these performance issues are router dependant. I'm waiting to get my hands on the new Asus RT-AC68U router to upgrade my yesteryear 300 mb/s router. In fact I just ordered it, it will arrive tomorrow. Will post here to let people know if it helped...
Ettepetje said:
You can probably find what it does on the Internet (Google), but it doesn't truly help. My guess is that these performance issues are router dependant. I'm waiting to get my hands on the new Asus RT-AC68U router to upgrade my yesteryear 300 mb/s router. In fact I just ordered it, it will arrive tomorrow. Will post here to let people know if it helped...
Click to expand...
Click to collapse
Well I was right, my shaky Wifi connection using my Sitecom WL-351 router is a thing of the past. Both the 2.4GHz and 5GHz connections through my brand new Asus RT68AC router work excellently!!
What this very probably means is that the Note 3 uses a Wifi chipset that doesn't work all that well with certain other (older model?) router chipsets. The Asus I bought to test this is quite expensive, but I am sure a regular router can work well given it is compatible. What needs to be done is verify (through a Poll or by researching known chipset incompatibility problems) what chipsets and/or routers / brands work well. Unless you expect Samsung to fix this in software, which often is impossible - unless Samsung can force an update of the chipset firmware.
Ettepetje said:
Well I was right, my shaky Wifi connection using my Sitecom WL-351 router is a thing of the past. Both the 2.4GHz and 5GHz connections through my brand new Asus RT68AC router work excellently!!
What this very probably means is that the Note 3 uses a Wifi chipset that doesn't work all that well with certain other (older model?) router chipsets. The Asus I bought to test this is quite expensive, but I am sure a regular router can work well given it is compatible. What needs to be done is verify (through a Poll or by researching known chipset incompatibility problems) what chipsets and/or routers / brands work well. Unless you expect Samsung to fix this in software, which often is impossible - unless Samsung can force an update of the chipset firmware.
Click to expand...
Click to collapse
im using an ASUS AC66-U still got disconnections
cyberazi said:
im using an ASUS AC66-U still got disconnections
Click to expand...
Click to collapse
Unfortunately Brand names don't mean compatibility since various models use varying router chipsets.

Wifi disconnects and reconnects constantly

Hi,
just had the phone for an hour and almost right away after first setup the wifi radio disconnects/turns off and re-connects/turns on automatically every 20 seconds or so. No matter wich network I try.
Working fine with my S7 Edge laying here beside me, never had problems. I have three different networks around me I can try out.
Anyone had the same problem? I can find som info about this exact issue for the S7 Edge for some, but no solution from that works on the S8..
N
this is an old problem S7 had
you need to toogle in settings > connectivity > wifi > advance > smart network swithc OFF
i think this was - but dont remember well since it was a while ago - but basically you need to turn off the option of phone switching between phone and wifi data
Having the exact same problem with my Ubiquity wifi network (ie, not some janky cable company router) with my just-booted up S8. Smart switch was off by default, and after switching it 'on' and back 'off', no change.
This was the first thread I found on the topic, will update with any solutions.
gsxrjjordan said:
Having the exact same problem with my Ubiquity wifi network (ie, not some janky cable company router) with my just-booted up S8. Smart switch was off by default, and after switching it 'on' and back 'off', no change.
This was the first thread I found on the topic, will update with any solutions.
Click to expand...
Click to collapse
Make sure hotspot2.0 is off
Sent from my SM-G950U using XDA Labs
EvoTillIdIE said:
Make sure hotspot2.0 is off
Sent from my SM-G950U using XDA Labs
Click to expand...
Click to collapse
Yup, Hotspot 2.0 is off for me. I've restarted the phone and the wifi access point, and my Note 5 and S7 are working fine lol. Super weird!
EvoTillIdIE said:
Make sure hotspot2.0 is off
Click to expand...
Click to collapse
Many of those switches doesn't exist in my s8.
Incl hotspot.
pickles76 said:
Hi,
just had the phone for an hour and almost right away after first setup the wifi radio disconnects/turns off and re-connects/turns on automatically every 20 seconds or so. No matter wich network I try.
Working fine with my S7 Edge laying here beside me, never had problems. I have three different networks around me I can try out.
Anyone had the same problem? I can find som info about this exact issue for the S7 Edge for some, but no solution from that works on the S8..
N
Click to expand...
Click to collapse
Probably means you have virgin broadband like me ?
choccy31 said:
Probably means you have virgin broadband like me ?
Click to expand...
Click to collapse
Well I'm in Sweden and have no operator dependence. Neither for mobile or my home network (fiber connection owned by me).
This sucks though... I want this resolved
pickles76 said:
Well I'm in Sweden and have no operator dependence. Neither for mobile or my home network (fiber connection owned by me).
This sucks though... I want this resolved
Click to expand...
Click to collapse
Try downloading wifi analysis app and see what it's picking up. Maybe you could try changing your wifi channel if it looks low?
choccy31 said:
Try downloading wifi analysis app and see what it's picking up. Maybe you could try changing your wifi channel if it looks low?
Click to expand...
Click to collapse
No this has nothing to do with the routers or access points. I am 3 meters from the AP, its at 100% signal rate etcetera..
This has to do with Samsung and the software.
pickles76 said:
No this has nothing to do with the routers or access points. I am 3 meters from the AP, its at 100% signal rate etcetera..
This has to do with Samsung and the software.
Click to expand...
Click to collapse
Download the wifi analysis app and see what the phone picks up.
Also in wifi settings on phone disable sleep mode and put to always on!
choccy31 said:
Download the wifi analysis app and see what the phone picks up.
Also in wifi settings on phone disable sleep mode and put to always on!
Click to expand...
Click to collapse
As I wrote I've tried all that I'm afraid. All the things that was recommended for the trouble on the s7.
have u tried going to a free wifi spot (starbucks, mcdonalds) see if the issue persists - maybe is your router refusing connection
tim2london said:
have u tried going to a free wifi spot (starbucks, mcdonalds) see if the issue persists - maybe is your router refusing connection
Click to expand...
Click to collapse
As I wrote I have three different wifi to test with but yes makes no difference. This is a well known but not solved problem with Samsung phones.. three different makes of manufacturers, different settings with a/b/g/n and all show the same problems.
I also installed the small new update today for the firmware. Still same problem.
I'm guessing I'm about to get a replacement phone. I'll try that on Monday.
I'm not seeing the same problems with public wifi as I am with my Ubiquity Unify AC AP Pro access points at home - definitely weird.
When it is connected, I'm getting my usual 100mbps speeds, but it continues to drop regularly (not the every 10secs it did when I first powered it on, but every minute or so).
One thing that was mentioned was changing channel bandwidth from '40' to '20'... I don't see anywhere to do that on the S8?
gsxrjjordan said:
I'm not seeing the same problems with public wifi as I am with my Ubiquity Unify AC AP Pro access points at home - definitely weird.
When it is connected, I'm getting my usual 100mbps speeds, but it continues to drop regularly (not the every 10secs it did when I first powered it on, but every minute or so).
One thing that was mentioned was changing channel bandwidth from '40' to '20'... I don't see anywhere to do that on the S8?
Click to expand...
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Doesn't that mean on your router?
By changing the broadcast bandwidth from 40 to 20 you will increase the signal produced (same power is covering less channels)
Sent from my HTC One_M8 dual sim using XDA-Developers Legacy app
I had this happen on a UniFi UAP-AC-Pro network with my S8 as well. I turned off Nearby Device Scanning on the S8 under Settings-> Connections -> More Connection Settings and that seemed to fix it. Strangely, I did not have the issue on my home network which has a single UAP-AC-LR access point with an otherwise similar configuration. Not sure if this setting change was really a fix, or if I just temporarily got lucky.
If turning off Nearby Device Scanning doesn't work for anyone, it might be worth playing with other settings within your network such as Band Steering. Some of these require turning on advanced features within the UniFi controller. Also I would be curious to hear whether those who have issues are on networks with a single access point, or larger installs with multiple access points.
Very recently got the Samsung S8 and I'm having some wierd WiFi issues. When connecting to the network everything is fine i get almost maximum download/upload speeds(500/500) from my UniFi AP-AC-PRO. But after being connected for awhile 30-60mins the speed drops to around 30mbit downstream and upload around 200mbit. If i disconnect from the Wi-Fi and instantly reconnect i get full speed again. I've tried switching settings in the ap, went from everything on auto settings to static channel/transmit power and been trying vht40/80 but makes no difference. If i have smart network switching on i get disconnected and put on LTE instead. All my other devices have blazing WiFi speeds as usual. I'm gonna try turning of nearby device scanning and see if that helps.
I started a thread in the ubiquiti UniFi forum as well but i cant link that here(not enough posts on this xda account)
izeen said:
Very recently got the Samsung S8 and I'm having some wierd WiFi issues. When connecting to the network everything is fine i get almost maximum download/upload speeds(500/500) from my UniFi AP-AC-PRO. But after being connected for awhile 30-60mins the speed drops to around 30mbit downstream and upload around 200mbit. If i disconnect from the Wi-Fi and instantly reconnect i get full speed again. I've tried switching settings in the ap, went from everything on auto settings to static channel/transmit power and been trying vht40/80 but makes no difference. If i have smart network switching on i get disconnected and put on LTE instead. All my other devices have blazing WiFi speeds as usual. I'm gonna try turning of nearby device scanning and see if that helps.
I started a thread in the ubiquiti UniFi forum as well but i cant link that here(not enough posts on this xda account)
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I'm having the exact same problem as you. Wifi connects at full speed at first, then after a while speed drops. Has gone down to 1Mbps numerous times. Disconnecting then reconnecting fixes it for a while then it starts all over again. I'm connected to a TP-Link AC1900 running dd-wrt. May try going back to stock firmware on the router to see if that helps.
So has anyone come up with a permanent solution to this? I'm in the same boat with my ac-ap-pro and s8+. Disconnects every 20 seconds or so.

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