S4 will not automatically connect to 5Ghz Wi-FI Network - Galaxy S 4 Q&A, Help & Troubleshooting

Anyone experiences this bug with the GS4 too?
When I toggle Wi-Fi off and on, it does not automatically connect to my 5GHz network. Instead, it just says 'Saved, Secured'. I must manually select the network before it connects to it.
However, for 2.4GHz networks, toggling Wi-Fi off and on will automatically search for a 2.4Ghz to connect.

Anybody?

trenzterra said:
Anybody?
Click to expand...
Click to collapse
Same problem here. No clues so far.
---------- Post added at 02:36 AM ---------- Previous post was at 02:29 AM ----------
acasals said:
Same problem here. No clues so far.
Click to expand...
Click to collapse
OK - just solved it. Go to your router settings for the 5GHz network and change the channel from "Auto" to 36 or 44 - both are reportedly working fine for another reported Samsung glitch but I'm guessing the real problem here is the "Auto" setting. Hope it helps.

Wow! Thanks! Now it works like a charm. What is the reported Samsung glitch btw?

Worked!
Thank you. The problem for me was on my GS3 (d2spr). My 2.4GHz would connect but the 5GHz would stay saved and not connect.
All the recent Roms that I flash have this problem. When I flashed back to the older roms, the 5GHz worked fine. Changing the channel worked.

Wireless RT-N66U N
Thanks I have been having problems with my Galaxy Note 2 not auto connecting to my N 5Ghz working 100% now from changing setting from auto to 36 or 44 awesome

Turns out it's because of this:
k1mu said:
There's a better fix for this.
In /system/etc/wifi there are two files:
nvram_net.txt and nvram_net.txt.us
The installed one is for Great Britain, and the other one (.us) is for the United States.
Rename nvram_net.txt to nvram_net.txt.gb and rename nvram_net.txt.us to nvram_net.txt
This makes two changes. changes "ccode" to "ccode=US" and adds "regrev=5".
Click to expand...
Click to collapse
This bug affects many of Galaxy line.

A bettter solution? Involves no hacking
acasals said:
Same problem here. No clues so far.
---------- Post added at 02:36 AM ---------- Previous post was at 02:29 AM ----------
OK - just solved it. Go to your router settings for the 5GHz network and change the channel from "Auto" to 36 or 44 - both are reportedly working fine for another reported Samsung glitch but I'm guessing the real problem here is the "Auto" setting. Hope it helps.
Click to expand...
Click to collapse
The above method worked for me, but I experimented and found a possible better solution:-
My Talktalk router uses the same SSID for 2.4 and 5 GHz bands. I tried changing the SSID for the 5GHz band by adding "5GHZ" to the end of the name.
The phone fails to detect the SSID when scanning for networks, however if on the phone wi-fi settings page I scroll to the end, click Add a Network, manually enter the new SSID, select the correct security method and enter the password, the phone connects.
Thereafter, if I turn wi-fi off and on, the phone then always connects automatically to the 5GHz SSID.
Both SSIDs are now displayed in the list of networks previously accessed, so I can switch from one to the other if needed.

Related

Should I return my Note?

I've had it a few days and here's my 2 problems I can't seem to figure out.
1) It does not do auto-rotate correctly, I have to turn it off. It goes Landscape and never returns.
Here's the Thread for that:
http://forum.xda-developers.com/showthread.php?t=1358220
2) It connects to 2.4 ghz Wireless N, but not 5 ghz, I thought for sure it would do both bands being so new, but maybe it only has the 2.4 ghz radio?
I've reset all Data and set the country code from KOR to XEU, but nothing has fixed the auto rotate problem and it looks like I'm the only person with it.
If the auto rotate worked, I would be 100% Happy as a clam.
Sounds like a calibration issue to me...
Didn't realise the wireless won't connect to .11a 5Ghz networks tho...
Mine is using the 5ghz n connection on my belkin router as I type this.
Sent from my GT-N7000 using xda premium
indie said:
Mine is using the 5ghz n connection on my belkin router as I type this.
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
I've got a Linksys E4200. It won't even see the 5ghz band. Maybe I'll try adhoc with my Notebook and see what happens.
les_garten said:
I've had it a few days and here's my 2 problems I can't seem to figure out.
1) It does not do auto-rotate correctly, I have to turn it off. It goes Landscape and never returns.
Here's the Thread for that:
http://forum.xda-developers.com/showthread.php?t=1358220
2) It connects to 2.4 ghz Wireless N, but not 5 ghz, I thought for sure it would do both bands being so new, but maybe it only has the 2.4 ghz radio?
I've reset all Data and set the country code from KOR to XEU, but nothing has fixed the auto rotate problem and it looks like I'm the only person with it.
If the auto rotate worked, I would be 100% Happy as a clam.
Click to expand...
Click to collapse
did you manage to connect through Ad.Hoc? I cannot find Adhoc in my Galaxy Note!! Can we enable AdHoc on Note?
---------- Post added at 10:50 AM ---------- Previous post was at 10:34 AM ----------
Did you manage to connect through Ad.Hoc? I cannot find Adhoc in my Galaxy Note!! Can we enable AdHoc on Note?
pingsamee said:
did you manage to connect through Ad.Hoc? I cannot find Adhoc in my Galaxy Note!! Can we enable AdHoc on Note?
---------- Post added at 10:50 AM ---------- Previous post was at 10:34 AM ----------
Did you manage to connect through Ad.Hoc? I cannot find Adhoc in my Galaxy Note!! Can we enable AdHoc on Note?
Click to expand...
Click to collapse
No, but I installed Samba, and that did what I needed to do.

wifi issues on N4 possible fix?

for those with wifi 'broken' try to change your router settings to WPA2 personal (TKIP+AES) that seems to work for me now,
other settings 'broke' the wifi
this might be just an issue with must me and my router
*spoke too soon: still broken, it only works certain times, mostly it just spins when i try to connecto to online
the wifi icon keeps flashing a black dot... that means the wifi is NOT working right? it should be just a solid blue bars?
on wifi advanced settings, WPS Pin Entry - what is this and do i need to enter that pin on my router?
still no luck with wifi on my network after flashing back to stock 4.2 from 4.2.1
same 'broken' wifi
might be this phone's wifi hardware is incompatible with wDDRT router?
Firmware: DD-WRT v24-sp2 (10/10/09) std
my other wifi devices work perfectly fine, so im really stumped
in phones advance wifi settings it has this WPS entry - what is this and is it somehow not allowing me full wifi?
i can view playstore,, it checks and loads my gMail but it won't connect to websites
it takes so long to download and install apps from playstore, i have to hit cancel, redownload, reinstall to get it working,etc. its not 'instant' like normal 20Mbps wifi should be
ran speedtest.net app and it wont connect to any servers
if anyone has clues to why my wifi is broken, please PM me thanks
it get a blue 3 to 4 bars on wifi signal but it keeps having this 'black' dot flashing in that wifi signal bar, (what is that?)
shows connected to my wifi at 72Mbps at good strength
I found my solution: in my router I unchecked the option WMM (Wi-Fi-multimedia)-settings (2.4GHz b/g/n). After I activated it, my data speeds increased enormously. Try it & report!
danielvc said:
I found my solution: in my router I unchecked the option WMM (Wi-Fi-multimedia)-settings (2.4GHz b/g/n). After I activated it, my data speeds increased enormously. Try it & report!
Click to expand...
Click to collapse
thanks i will look for that option in my router but don't think i have it
Public wifi and my work wifi working perfect with n4. So it definitely my routers wddrt firmware issues with n4... still gottta figure it
Sent from my TC970 (Wi-Fi) using xda app-developers app
My n4 will not connect to any of the WPA2 AP's around here.
I have the opposite problem. I can connect to my WPA2 router at home just fine but cannot connect to the WEP wifi at work. Well, not reliably. I've gotten connected twice, but was unable to recreate the conditions.
-Matt
I had speed problems with my 5GHz band at home. Connected, but couldn't get over 1Mbps on my 30+ connection. Connected to the 2.4Ghz band and I get significantly faster speeds. Haven't had problems connecting though.
siscim23 said:
I had speed problems with my 5GHz band at home. Connected, but couldn't get over 1Mbps on my 30+ connection. Connected to the 2.4Ghz band and I get significantly faster speeds. Haven't had problems connecting though.
Click to expand...
Click to collapse
I've noticed similar behavior, seems like my 5ghz signal strength is much weaker than my 2.4ghz signal according to my n4.
So this n4 is picky about. Certain WiFi networks.configs
Sent from my Nexus 4 using xda premium
Sometimes, my N4 loses wifi connection at work. It's inconsistent. My work wifi is open but MAC filtered.
There have been 3-4 times when I noticed that it lost wifi connection. I had to turn off wifi radio and back on to reconnect.
OTOH, connection to home DD-WRT wifi router is rock solid.
Set lease time for as long as possible, it normally this is 2 weeks..
sent via xda premium with Nexus 7 or Nexus 4!
I flashed my stock recovery backup and my wifi is working again!
jim.k.yee said:
I flashed my stock recovery backup and my wifi is working again!
Click to expand...
Click to collapse
??????
very strange !!!!
can you test to flash back CWM recovery and test again the wifi ?
Hello, I am also having problems with WIFI. I've tried a lot of things (change the router configuration, the cellular exchange kernel, etc ...) but I could not fix this problem. Can you give any more ideas? I've even thought about buying another router but can be giving the same problem.
I used my wife's phone as a router and it works normally, but when I connect directly to the router from home and he trasfere data only for a few moments and then transferring data, although still seem the symbol of wifi connected.
I found changing a setting on the Nexus 4 seems to have remedied most of my WiFi issues. Forcing the WiFi frequency band to 2.4GHz only instead of Auto appears to have done the trick for me.
In WiFi if you select Settings and Advanced under Wi-Fi frequency band there is an option to force 5GHz or 2.4GHz with the default on Auto.
BigVDawgy said:
I found changing a setting on the Nexus 4 seems to have remedied most of my WiFi issues. Forcing the WiFi frequency band to 2.4GHz only instead of Auto appears to have done the trick for me.
In WiFi if you select Settings and Advanced under Wi-Fi frequency band there is an option to force 5GHz or 2.4GHz with the default on Auto.
Click to expand...
Click to collapse
Will try it, thanks.
BigVDawgy said:
I found changing a setting on the Nexus 4 seems to have remedied most of my WiFi issues. Forcing the WiFi frequency band to 2.4GHz only instead of Auto appears to have done the trick for me.
In WiFi if you select Settings and Advanced under Wi-Fi frequency band there is an option to force 5GHz or 2.4GHz with the default on Auto.
Click to expand...
Click to collapse
I tried but did not fix, thanks for trying to help.
Lucena04 said:
I tried but did not fix, thanks for trying to help.
Click to expand...
Click to collapse
for me too
anyways thanks for the help...

Note 3 (SM-N900V) won't connect to 5GHz 802.11ac

Hi,
My rooted Verizon Samsung Galaxy Note 3 (SM-N900V) running the stock KitKat 4.4.2 stopped connecting to 5GHz 802.11ac AP's. I first noticed it at a friends house, then again at home. I can connect to 2.4GHz 802.11ac, 802.11n & 802.11g just fine. When I try to connect, it says "Connecting" for a second or two, then drops to "Saved, secure" with no other errors or messages. Once it's saved, pressing "Connect" doesn't seem to do anything.
My home AP is a TP-Link Archer C9 running the latest firmware. The 2.4GHz & 5GHz bands have different SSID's. I read about issues with Samsung devices & 5GHz channels so I tried changing it from auto to 44 to 36 to no avail. Note that both of my Samsung Tab S 8.4's and my wife's Note 3 (same model & OS) along with all my laptops can connect to the 5GHz frequency just fine. I run a separate DHCP server and tried manually removing the entry for my Note 3 to no avail.
In the Wifi Advanced settings, I have "Passpoint" off and "Auto network switch" unchecked.
I also read about disable Wifi Power Saving Mode by dialing *#0011# but dialing that only brings me to a Verizon error message.
I tried using the app Wifi Connection Manager to wipe all the wifi connections (the "Fix Wi-Fi Problems" option) but that didn't help.
Next I'll try to see if I can figure out how to use logcat to get some sort of error message.
After many hours of reading about similar issues, I've run out of options to try short of factory wiping which I'd prefer to avoid. I'd be grateful for any other suggestions.
Thanks!
-Jeff
feretio said:
Hi,
My rooted Verizon Samsung Galaxy Note 3 (SM-N900V) running the stock KitKat 4.4.2 stopped connecting to 5GHz 802.11ac AP's. I first noticed it at a friends house, then again at home. I can connect to 2.4GHz 802.11ac, 802.11n & 802.11g just fine. When I try to connect, it says "Connecting" for a second or two, then drops to "Saved, secure" with no other errors or messages. Once it's saved, pressing "Connect" doesn't seem to do anything.
My home AP is a TP-Link Archer C9 running the latest firmware. The 2.4GHz & 5GHz bands have different SSID's. I read about issues with Samsung devices & 5GHz channels so I tried changing it from auto to 44 to 36 to no avail. Note that both of my Samsung Tab S 8.4's and my wife's Note 3 (same model & OS) along with all my laptops can connect to the 5GHz frequency just fine. I run a separate DHCP server and tried manually removing the entry for my Note 3 to no avail.
In the Wifi Advanced settings, I have "Passpoint" off and "Auto network switch" unchecked.
I also read about disable Wifi Power Saving Mode by dialing *#0011# but dialing that only brings me to a Verizon error message.
I tried using the app Wifi Connection Manager to wipe all the wifi connections (the "Fix Wi-Fi Problems" option) but that didn't help.
Next I'll try to see if I can figure out how to use logcat to get some sort of error message.
After many hours of reading about similar issues, I've run out of options to try short of factory wiping which I'd prefer to avoid. I'd be grateful for any other suggestions.
Thanks!
-Jeff
Click to expand...
Click to collapse
It could simply be a lousy antenna connection or that your 5GHz radio died. I presume you see the 5GHz SSID when searching.. so the radio itself is probably ok.
Take the back off your phone, using s jewlers screwdriver, check the screws around the outside edge on the back if the phone. If any are loose, that can cause reception issues. Do not overtighten! Just make sure they're firm and not loose.
Sent from my SM-N900V using Tapatalk
Hi donc113,
Thanks for the reply.
After powering off, I removed the rear cover & battery and made sure all 12 screws were nice and snug but not overtightened. I also loosened and retightened the one next to the SD card slot since some diagrams indicate the wifi antennas are located there. As an aside, do you know what the "L" and "R" labels are next to round buttons on either side of the SD card? I haven't found any documentation on that yet.
Unfortunately, it didn't help. The SSID shows with a strong signal but still won't connect. This might be the issue, though, because the 5GHz SSID drops to no signal every now and then but that's inconsistent.
I'll try to figure out to use logcat to see if I can find an error but let me know if you or anyone else can think of other things to try.
Thanks!
-Jeff
No idea on the buttons, on mine there are are just brown 'fillers' in them.
Sent from my SM-N900V using Tapatalk
---------- Post added at 03:29 AM ---------- Previous post was at 03:18 AM ----------
Ok.. Found the info on the buttons, they are covers for connectors, i presume for testing purposes.
Sent from my SM-N900V using Tapatalk
Mine recently had the issue as well (I have an Archer TP-Link C5). After testing wifi and seeing I still used the 5G at work, hard and soft rebooting my Ubiquity Uni-Fi AC AP, and even double checking with the WiFi Analyzer app, I finally went into the router to check if maybe the MAC was no longer registered. Ultimately, I thought to just unbind the phone and re-enable it. I only got as far as to unbind the IP (there is a checkbox in 'IP & MAC Binding' -> 'Binding Settings') and suddenly it connected and is working again. So, if you happen to have bound a static IP to the MAC address, uncheck that box and it magically works again. The IP stays the same between connections so I guess it is not super important.
Just an idea.
EDIT:
Okay, turns out the issue resolves around the fact that you have a conflicting IP address on your network and the phone software decides to disable the connection rather than obtain a new IP. I found the best way to resolve this is to set all my major devices with an address assignment on the network (you can find this under DHCP -> Address Reservation).
So, though related, the above issue turned out only a temporary fix. My phone was trying to get the same IP as my Ubiquity AP despite the MAC binding for the AP.

WiFi unstable

WiFi is very unstable when you aren't next to the access point. It keeps switching from WiFi to data connection.
Furthermore, when gripping the phone from the upside without a cover (near the camera), the WiFi connection will not work anymore.
Someone is experiencing this problem?
same to me
WiFi works normal here... No deathgrip
Maybe you can try enabling Aggressive WLAN to Cellular handover at developer settings under the networking tab to fix your issue
alfatihrobb said:
Maybe you can try enabling Aggressive WLAN to Cellular handover at developer settings under the networking tab to fix your issue
Click to expand...
Click to collapse
Definitely this is not a solution...
jack_21 said:
WiFi is very unstable when you aren't next to the access point. It keeps switching from WiFi to data connection.
Furthermore, when gripping the phone from the upside without a cover (near the camera), the WiFi connection will not work anymore.
Someone is experiencing this problem?
Click to expand...
Click to collapse
Well, the problem in my case was that I have two access points with the same name at the two sides of the house, and from my room the second AP has a better signal, but it had some trouble and it wasn't working, so the phone wifi was switching from the first to the second continually.
However if you hold the phone from the upside, there is a very strong loss of signal. A workaround is to use a case.
I can say that wifi antennas of this phone are not that good, like the iPhone 7.
My previously Xiaomi phone had a better wifi signal on very distant access point.
jack_21 said:
Definitely this is not a solution...
Click to expand...
Click to collapse
I agree: not a solution.
I've changed ssid of 5Ghz wifi (now is different from 2.4) and wifi don't disconnect random anymore.
ohdearlord said:
I agree: not a solution.
I've changed ssid of 5Ghz wifi (now is different from 2.4) and wifi don't disconnect random anymore.
Click to expand...
Click to collapse
Yes, the same SSID on different AP / technologies makes only troubles.
Never use the same name for 2,4Ghz and 5Ghz. Unfortunately many providers have the routers that are configured this way.
jack_21 said:
Yes, the same SSID on different AP / technologies makes only troubles.
Never use the same name for 2,4Ghz and 5Ghz. Unfortunately many providers have the routers that are configured this way.
Click to expand...
Click to collapse
I've configured my router with same ssid to use band steering (i can't post link: search "band steering avm" from a search engine)
That technology do exactly the trick: switching from frequency bands, but even disabling it Mi A1 doesn't manage WiFi correctly and don't suppose to do that!
Hi Guys
Is there a solution for unstable wifi connections.
thank you

Wifi not working properly after pie update

Mi Mi A1 can't connect to my home wi-fi, or if it connects, it will automatically disconnect after a while:
My router appears in the WiFi menu, stating that it is a "saved connection", but when i click on the ssid it just shows that he's trying to connect but then it goes back to the list of wifi networks, without showing any errors etc.
I've got no mac filter on my router so it can't be the new mac randomizer update already stated in the forum.
It all used to work well before updating to Pie (no root, no vpn method).
Thanks for your attention, let me know if i can provide more info about this problem
Identical issues for me, with identical conditions (no root/unlock)...
Anyone knows how to solve? I tried everything but nothing seems to work...
I'm having the same problem but only with some networks. No idea what's causing it.
had the same issue and after disabling "A-MPDU" or switched back to 54g only in router settings it worked again.
Siebenmik said:
Mi Mi A1 can't connect to my home wi-fi, or if it connects, it will automatically disconnect after a while:
My router appears in the WiFi menu, stating that it is a "saved connection", but when i click on the ssid it just shows that he's trying to connect but then it goes back to the list of wifi networks, without showing any errors etc.
I've got no mac filter on my router so it can't be the new mac randomizer update already stated in the forum.
It all used to work well before updating to Pie (no root, no vpn method).
Click to expand...
Click to collapse
I suggest you try to disable the 5 GHz band on the router and see if it helps... on my old router running only on 2,4 GHz wifi works fine, but many other users are reporting problems, so it might be an issue with dual band routers; it's worth a try.
Parnas72 said:
I suggest you try to disable the 5 GHz band on the router and see if it helps... on my old router running only on 2,4 GHz wifi works fine, but many other users are reporting problems, so it might be an issue with dual band routers; it's worth a try.
Click to expand...
Click to collapse
That's not the issue, I have a dual band router in my house and it works just fine.
Potus ThePlant said:
That's not the issue, I have a dual band router in my house and it works just fine.
Click to expand...
Click to collapse
Yet not all users had their MAC address changed with the update, so maybe not every terminal is subject to the issue... just saying.
I have same problem. It was due to change in Mac address during update.. I just simply login to router page...by 191.168.1.1
In wireless>wireless Mac filtering> add it latest MAC address along with new name...save it and try...it worked for me.
ryanee said:
had the same issue and after disabling "A-MPDU" or switched back to 54g only in router settings it worked again.
Click to expand...
Click to collapse
Thanks for your sumbission but unfortunately my modem doesn't support tweaking of AMPDU
What do you mean with 54g?
Manthan ladani said:
I have same problem. It was due to change in Mac address during update.. I just simply login to router page...by 191.168.1.1
In wireless>wireless Mac filtering> add it latest MAC address along with new name...save it and try...it worked for me.
Click to expand...
Click to collapse
I've got no mac filtering enabled on my modem so this is definitely not the problem. Seems a problem with the 5ghz frequency. maybe reduced bands or stability problems - can anyone check which bands are enabled for 5ghz connection?
Apparently the problem is the Modem of the official Pie ROM, because the latest Pie update have issues with LTE bands and WiFi. Hope Xiaomi will release a fix soon!
Enviado desde mi Mi A1 mediante Tapatalk
Same
A1 over home WiFi does not work correctly. Internet access is available, but it is impossible to view mail on gmail, send pictures to tweeter, whatsup. PIE version obtained by OTA, root no. MAC address when updating to PIE changed. There is no filtering on the router by MAC. Range one 2.4. I changed the firmware of the router, did a complete reset of the Mi A1 to the factory settings. Forced to assign DNS. The result on the home router is not reached. 8 Android devices are connected to the router. All work without problems with all resources.
Siebenmik said:
Thanks for your sumbission but unfortunately my modem doesn't support tweaking of AMPDU
What do you mean with 54g?
Click to expand...
Click to collapse
In my modem settings I can deactivate the 801.11n standard and only use 801.11g (with max speed 54mbit). Since AMPDU is a "n" feature it makes sense that this works, too.
I hope Xiaomi will fix this soon, I have issues with other Wifi access points, which I can't change
ryanee said:
In my modem settings I can deactivate the 801.11n standard and only use 801.11g (with max speed 54mbit). Since AMPDU is a "n" feature it makes sense that this works, too.
I hope Xiaomi will fix this soon, I have issues with other Wifi access points, which I can't change
Click to expand...
Click to collapse
Unfortunately, I can't even change this. The only thing my modem allows is turning 5ghz on/off 2.4ghz on/off and manually changing the channel and the band width
Siebenmik said:
Unfortunately, I can't even change this. The only thing my modem allows is turning 5ghz on/off 2.4ghz on/off and manually changing the channel and the band width
Click to expand...
Click to collapse
I suggest you try to change Wi-Fi encryption from Wpa2-psk (AES) to wpa2-psk (TKIP). Other users regained access to their Wi-Fi this way.
Same problem here..... im using MAC filter/TKIP/2.4Ghz (5Ghz OFF), disabled mac filter as workaround waiting for a fix
EDIT: Ok fix found, just remove the previous mac (before update to pie) from the mac whitelist
biondi53 said:
Same problem here..... im using MAC filter/TKIP/2.4Ghz (5Ghz OFF), disabled mac filter as workaround waiting for a fix
EDIT: Ok fix found, just remove the previous mac (before update to pie) from the mac whitelist
Click to expand...
Click to collapse
This is not the fix for this problem - This is a solution to the new FEATURE of android Pie in order to increase Mac Address Security
Parnas72 said:
I suggest you try to change Wi-Fi encryption from Wpa2-psk (AES) to wpa2-psk (TKIP). Other users regained access to their Wi-Fi this way.
Click to expand...
Click to collapse
This worked! Thanks a lot! Hope that they fix this asap because aes is more secure
Siebenmik said:
This is not the fix for this problem - This was a fix for the new feature of android Pie Mac Address Security
This worked! Thanks a lot! Hope that they fix this asap because aes is more secure
Click to expand...
Click to collapse
Sorry just trying to help
Regards!
Dont work
Changing Wi-Fi encryption from Wpa2-psk (AES) to wpa2-psk (TKIP) dont help on Zyxel Keenetic 4G.

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