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S4 will not automatically connect to 5Ghz Wi-FI Network

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.

WiFi Problem: sleep after minutes

Hello every one, this is my problem with Elephone S7:
When activated, the WiFi, after a few minutes goes on standby and no longer works.
can you help me?
my best regards

Hello,
i can not confirm this problem but have you checked your wifi-settings on your phone. May its defined that your phone wont let WiFi activated in stand-by.
You can check this under "advanced" option in wifi settings.
What means "No longer Works"? Did the phone lost the complete connection - no signal?
Has your phone still an ip-adress? You can also Check this under advanced in wifi settings.
What IP-address lease time is configured on your wifi router?
Best regards

donlg said:
Hello,
i can not confirm this problem but have you checked your wifi-settings on your phone. May its defined that your phone wont let WiFi activated in stand-by.
You can check this under "advanced" option in wifi settings.
What means "No longer Works"? Did the phone lost the complete connection - no signal?
Has your phone still an ip-adress? You can also Check this under advanced in wifi settings.
What IP-address lease time is configured on your wifi router?
Best regards
Click to expand...
Click to collapse
for no longer works i mean that i've turn off, and again on, to use again WiFi, but after minutes i've again off and on
In wifi settings the option for wifi in "always on".
i've an ip address on the phone, and my router works wit other smartphone/tablet android.
sorry for my english

I bought an Elephone S7 recently and have similar problems. This is more prominent when wifi signal is weak. Very annoying.
In general, I get very poor WIFI performance. I compared with my wife's old HTC M8 and S7's performance is 5 to 10 times slower.
I am trying to return it.

ZeeshanGhalib said:
I bought an Elephone S7 recently and have similar problems. This is more prominent when wifi signal is weak. Very annoying.
In general, I get very poor WIFI performance. I compared with my wife's old HTC M8 and S7's performance is 5 to 10 times slower.
I am trying to return it.
Click to expand...
Click to collapse
i think a lot of elephones s7 come with problems
especially in wifi, wifi for me in front of router works nice, but i a moove a little to a division or something i lost almost all signal of download, uplodad stays fine, this is very weird
some bugs in the rom, some lag
camera is very bad and also the software is even worst
dont buy this phone

new t580 (2016) Internet lag

Just got a 10.1 tab a6 for Xmas and despite it being nearly empty, Web browsing is depressingly laggy. I've checked on my other devices and the house conection is fine however, when clicking links, I get pauses of up to 10 seconds as if the request is being routed through a proxy or some kind of link security checker. Is there some kind of undocumented Samsung bloat ware or is there an issue with the firmware? Other than the net, the tab runs great.

I just got a Tab A 7.0.
Haven't experienced many issues except for the screen screwing up and refusing to work like my other budget device.
Try restarting it, or disconnecting then reconnecting to the Internet. If not, try a different browser. Maybe that'll fix it.

same here with a t585. Since some days the internet browsing is laggy... already wiped data/cache on stock rom... very sad.
edit: it could be somehow wifi related since the lag is there also using other web based apps.

I have found the problem: the wifi module.
the issue completely disappears as soon as I switch wifi off and I use the 4g connection.
now the point is: it is router related or tablet related?
my router works perfectly with all the other devices...
---------- Post added at 02:39 PM ---------- Previous post was at 02:20 PM ----------
partially solved.
delete your current wifi connection; create a new one manually, with a static ip address, global & local DNS and all parameters to "facilitate" a steady connection.
For me this worked to get rid of lags.

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.

S8 Internet connection may not be available issue

Just got the S8 and I have 3 Wi-Fi access points at home to cover the whole house. My S8 has been registered with the passwords for all of the APs but it continually rejects the connections with an exclamation mark after the WiFi icon having connected and then shown a message that the Internet connection may not be available. The Internet connection is available as other devices are connected and using it perfectly. If I switch the Wi-Fi on and off and reboot the S8 the issue corrects itself but I should not have to go through that nonsense every time I come home and want to use my Wi-Fi. I have explored the advanced options on the connection settings and they appear to be quite limited (DHCP Etc). Is there some way to solve this issue? I have no problem with other android devices connecting to the same hotspots. Any ideas that might lead to a solution would be appreciated.

bbersk said:
Just got the S8 and I have 3 Wi-Fi access points at home to cover the whole house. My S8 has been registered with the passwords for all of the APs but it continually rejects the connections with an exclamation mark after the WiFi icon having connected and then shown a message that the Internet connection may not be available. The Internet connection is available as other devices are connected and using it perfectly. If I switch the Wi-Fi on and off and reboot the S8 the issue corrects itself but I should not have to go through that nonsense every time I come home and want to use my Wi-Fi. I have explored the advanced options on the connection settings and they appear to be quite limited (DHCP Etc). Is there some way to solve this issue? I have no problem with other android devices connecting to the same hotspots. Any ideas that might lead to a solution would be appreciated.
Click to expand...
Click to collapse
I had this problem when i first got my s8 from vodafone but when i got this latest update it's been good no issues with internet anymore.

I have this problem as well with my S8 from Verizon. Worked flawlessly for a week and them today I get this error. Very frustrating. I know the SMG955U from Verizon is already unlocked but is there any way to put the International ROM on the phone seeing that the Verizon and the International are the same?
I've tried all the resets etc and the WiFi connects but I get the 'Internet connection may not be available' message.

Update 27/04/2017
Thanks for the reply. My S8 developed some interesting issues including the switching on of 'do not disturb' mode intermittently and along with the Wi-Fi issue the mobile data was failing in areas where a full 4G signal was present. Rebooting, resetting etc did not resolve the issue and I returned the phone to CPW for advice. The staff at the Glasgow store wasted no time and exchanged it on the spot after some negotiation with their technical service centre. Full marks to CPW for the prompt service and I can report that all of the previous issues have now been resolved with the replacement handset. I thought it worthwhile to post this information so that others who experience similar issues may be able to get a similar resolution.

Poor WIFI performance
I also have issues with the wifi of the phone, /i will get the terminal replace some time today or next week.
1. WIFI keeps disconnecting, actually it's flapping connct&disconnect for 5-10 min until it finally connects, on this matter I have seen on the acces point that it tried to allocate an ip from an unknown without asking DHCP server for an IP renew it actually tries to alocate itself the last known ip, and clearly disconnects because of lack of internet access, this happens normally as power saving mode is on, disabeling power saving and assigning a static ip on the phone seems to resolve the issue.
2. poor wifi signal... no fix for this thus far
- i have 580Mbps speed connection on my S5 and only 120-240Mbps on my S8, steaming not working and connection in general very bad, time ots and stuf, although I position myself at 10cm away from the wifi router antenas i only get 540Mbps signal, although I have an AC1750 router , s5 gets 840 in the same spot... I think the modem(that is part of the Exynos chipset) does not work wekll with Atheros based AP´s , I have an Archer C7 with 2.4ghz QCA9558 chipset capable of 450 Mbps theoretical speed, but only uses 2 antenas as s8 only has 2 from my knowledge and reaches a max of 140Mbps(should of connected at 300Mbps at 10cm in theory ) with the s8 and QCA9880-BR4A on the 5ghz side of things with a theoretical speed of 1300Mbps should work at 866 with the S8 because of the 2 antenas of the S8.

phone changed 90% of problems fixed
Hello, just got my phone replaced, tha new unit has way better wifi signal considering I hace atheros router and the phone has broadcom 43xx chipset... worth considerign changing to a broadcom router...

Hi,
I have found a solution to this problem.
1. GO to wifi settings
2. Forget the wifi network
3. CONNECT AGAIN BUT BEFORE CONNECTING GO TO ADVANCED OPTIONS AND CHOOSE STATIC INSTEAD OF AUtOMATIC. Enter in the ip address etc and connect.( It requires to be entered manually) Problem will be solved.

bbersk said:
Just got the S8 and I have 3 Wi-Fi access points at home to cover the whole house. My S8 has been registered with the passwords for all of the APs but it continually rejects the connections with an exclamation mark after the WiFi icon having connected and then shown a message that the Internet connection may not be available. The Internet connection is available as other devices are connected and using it perfectly. If I switch the Wi-Fi on and off and reboot the S8 the issue corrects itself but I should not have to go through that nonsense every time I come home and want to use my Wi-Fi. I have explored the advanced options on the connection settings and they appear to be quite limited (DHCP Etc). Is there some way to solve this issue? I have no problem with other android devices connecting to the same hotspots. Any ideas that might lead to a solution would be appreciated.
Click to expand...
Click to collapse
Hi,
I have found a solution to this problem.
1. GO to wifi settings
2. Forget the wifi network
3. CONNECT AGAIN BUT BEFORE CONNECTING GO TO ADVANCED OPTIONS AND CHOOSE STATIC INSTEAD OF AUtOMATIC. Enter in the ip address etc and connect. Problem will be solved.

@Saurav913 doesn't work your tip,but my wifi drop too much especially in stanby (set it on always option) and till I wake up my phone i don't have wifi again with router Vodafone revolution..

Change the DNS...
Hi there..
I had just the same problem with s8 plus and s7 edge(after updating to android 7.0), it kept saying "internet may not be available", I changed the DNS to 8.8.8.8 and tue problem solved. Go to SETTINGS》WIFI》SSID》MANGE NETWORK》change the IP SETTINGS to STATIC》then change the DNS1 to 8.8.8.8 hit save and you are good to go.
Sorry if there are any mistakes. I am new to XDA and not good in english.
---------- Post added at 01:24 AM ---------- Previous post was at 01:20 AM ----------
bbersk said:
Just got the S8 and I have 3 Wi-Fi access points at home to cover the whole house. My S8 has been registered with the passwords for all of the APs but it continually rejects the connections with an exclamation mark after the WiFi icon having connected and then shown a message that the Internet connection may not be available. The Internet connection is available as other devices are connected and using it perfectly. If I switch the Wi-Fi on and off and reboot the S8 the issue corrects itself but I should not have to go through that nonsense every time I come home and want to use my Wi-Fi. I have explored the advanced options on the connection settings and they appear to be quite limited (DHCP Etc). Is there some way to solve this issue? I have no problem with other android devices connecting to the same hotspots. Any ideas that might lead to a solution would be appreciated.
Click to expand...
Click to collapse
Hi there..
I had just the same problem with s8 plus and s7 edge(after updating to android 7.0), it kept saying "internet may not be available", I changed the DNS to 8.8.8.8 and tue problem solved. Go to SETTINGS》WIFI》SSID》MANGE NETWORK》change the IP SETTINGS to STATIC》then change the DNS1 to 8.8.8.8 hit save and you are good to go.
Sorry if there are any mistakes. I am new to XDA and not good in english.

I have same problem and it is very annoying. I got 2 S8 plus and both have the problem.
There are 3 WIFI Router that covers my house. I have problems saying internet might not be available every time I connect. This is very annoying. Other Phones in the house like Iphone do not have the problem.
What I noticed is that the IP range of my router is:
192.168.1.1
But my S8 says he is connected but the IP is
192.168.0.100
Anyone have same problem?
Thanks!

bbersk said:
Just got the S8 and I have 3 Wi-Fi access points at home to cover the whole house. My S8 has been registered with the passwords for all of the APs but it continually rejects the connections with an exclamation mark after the WiFi icon having connected and then shown a message that the Internet connection may not be available. The Internet connection is available as other devices are connected and using it perfectly. If I switch the Wi-Fi on and off and reboot the S8 the issue corrects itself but I should not have to go through that nonsense every time I come home and want to use my Wi-Fi. I have explored the advanced options on the connection settings and they appear to be quite limited (DHCP Etc). Is there some way to solve this issue? I have no problem with other android devices connecting to the same hotspots. Any ideas that might lead to a solution would be appreciated.
Click to expand...
Click to collapse
I found a quick work around on how to fix this temporarily until Samsung issues a patch.
just turn off 5ghz SSID broadcasting and you should be ok for now.
here is a quick how to video i made on just in case.
https://youtu.be/Nu5FjDPLn-M

I'm having a very similar problem with my home WiFi and my Verizon S8+ I bought from Samsung's website. I've tried switching from DHCP to static and entering all my info. No luck. I've also switched my dns1 to 8.8.8.8 and dns2 to 8.8.4.4, and my WiFi router is set to 2.4ghz only. No success in resolving the issue. Currently my phone will show the "internet may not be available" with the added exclaimation point for a few minutes when first connected, then the exclaimation goes away and I'll have regular full speed internet for around 25-45 seconds before it goes back to a non-internet state. Any suggestions?

Try changing in your router the security setting. If your using WPA2 AES/TKIP, change to just WPA2 TKIP and see if this works for you...
I was having the same exact issue for months. I changed to TKIP only and have been rock solid ever since. No more ! at all... I'm gonna switch to just AES today and see how that works.

Changed to WPA2-AES and within the hour had ! back and no internet. Went back to TKIP and rock solid again. Looks like a possible bug with AES to me. Sticking with wpa2-tkip setting for now.

I'm having this same exact issue.
Anyone who knows what to look for to fix this, what info or files do you need from me? I'm at the end of my tether with this ****

I am having the exact same issue on my galaxy tab s2, even on the replacement. Due to the being such an intermittent problem, it wouldn't do it when Samsung support checked it out...
This happens on both 2.4 ghz and 5 ghz frequency for me. I've tried downloading a wifi fixer, I've reset network settings, and turned off nearby device scanning. I've also tried doing what a forum suggested by changing the ip settings from dhcp to static but it wouldn't connect to wifi at all. Not sure what else to try...
I read that it may be due to nougat 7.0 software. I was suggested by Samsung to first put the tablet on safe mode (this disables third party apps, and would reveil if an app was causing the problem) but the problem still persists. Also did a hard reset on the first tablet I had but it still done the same problem...

I always thought that this was a is problem in 7.0, and was addressed in 7.1. Hopefully, when the next major update comes out, this issue will be resolved.

Oh come on Samsung!
It's been 4 months since the first post and still no solution.
And it's a basic wifi connection!
Internet may not be available! = Samsung may not be available

Heya all. First post I guess
Edit: Gah it was the second. I have to controll myself better and not spam.
So I had the same problem and tried more or less all.
My "solution" was to disable the firewall on the router which means some settings/security there was triggered. My guess is that it's the "Smart Network connection" that trigger it if the phone have both poor Wi-Fi and 4G. It then jumps back and forward = firewall detect strange behaviour and block. That's why there are so many strange "fix" related to the router - hidden network - no security - disable 5Ghz and so on.
Can someone please test asap as I have a plan But if it's not this to test
JayJayaa said:
Oh come on Samsung!
It's been 4 months since the first post and still no solution.
And it's a basic wifi connection!
Internet may not be available! = Samsung may not be available
Click to expand...
Click to collapse