2.4GHz Wifi Problem

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What steps will reproduce the problem?
1. Wifi internet from two iPhone does not work. Not always on both iPhones at 
same time. Wifi symbol is seen on the top of iPhone but internet does not work. 
Router has to be restarted to get it to work again.

Internet via wired computers and 5GHz connected iPad continues to work.

2.
3.

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
version 1.1.1.8f-b8-2

Please describe the problem as detailed as it's possible.
If you have connection problem, then syslog file is required. (please do
attach it as a file)
Note that if there will be a poor problem description the issue status will
be changed to 'Invalid'!

Original issue reported on code.google.com by luke...@gmail.com on 25 Jun 2012 at 9:34

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This is happening to me as well, but not only on my iPhone (4S).
I have 2 notebooks here that connect at 2.4GHz (both use Atheros chipset if 
that makes any difference), and often they display a yellow exclamation mark on 
the Windows wireless console (no internet access).
I've found that disconnecting from the network and reconnecting fixes it (no 
router reboot necessary in my case).
On the iPhone I have to disable WiFi and enable it back.
My other notebook is equipped with a 5GHz compatible Intel WiFi Link 5100 chip 
and has experienced no such issues.
I'm using 1.1.1.8f-b8-2 but earlier version have had this issue as well.
Thank you devs for all your efforts :) 

Original comment by tamir...@gmail.com on 27 Jun 2012 at 12:44

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Had that too on Android phone. This problem started a few revision back. Cant 
remember the exact verion.
Asus official firmware has no problem.

Original comment by Wagnar...@gmail.com on 4 Jul 2012 at 8:21

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Same problem happens on my router, 2.4G wifi internet with my iphone4 can not 
work sometimes. 5G wifi with my laptop is OK. 
My firmware is RT-N56U_1.1.2.0-002_newgui .
Thank you devs for all your efforts :) 

Original comment by yifan....@gmail.com on 7 Jul 2012 at 3:06

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The same happens with my laptop and iphone

Firmware RT-N56U_1.1.2.0-002

Original comment by yamamoto...@gmail.com on 8 Jul 2012 at 1:21

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Same issue with Late 2007 white Macbook

Original comment by gmorg...@gmail.com on 12 Jul 2012 at 11:47

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I've  upgraded to 1.1.2.2-005 in the hope of some improvement. But I think it's 
just made it worse. Any progress on resolving this yet? Thanks.

Original comment by luke...@gmail.com on 28 Jul 2012 at 5:40

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Has anyone found a solution to this?

Original comment by sul.sull...@gmail.com on 3 Aug 2012 at 1:26

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I had this problem too and went back to an older 1.0.1 version, which was 
better but still showed occasional issues. So I went back to the latest Asus 
version which required a hard reset, set everything back up and then realised 
why I stopped using the Asus version in the first place. So I updated to 
1.1.2.2-006, powered off/on, and so far (about 35 hours) it's been fine.

Original comment by matt.j.s...@gmail.com on 3 Aug 2012 at 9:26

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I think I spoke too soon. Accidentally knocked the power out this evening and 
after restarting the problem happened again within a few hours.

Original comment by matt.j.s...@gmail.com on 3 Aug 2012 at 11:11

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I may have found a solution. I'm based in the UK and had the wifi channels set 
to 1-13. since ive switched this to 1-11 i've not had any trouble. Might be 
worth trying that and see if that helps you as well.

Original comment by luke...@gmail.com on 23 Aug 2012 at 7:30

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Something defintely wrong with 2.4ghz. I'm on 1.0.1.8j now and it's got even 
worse. As soon as I take mobile devices into the next room, I'm almost getting 
nothing and sometimes it can't even connect to the router.
Never had this problem with 1.0.1.8d
It's just an absolute joke. Can't even use mobile devices upstairs now.

Original comment by markpo...@gmail.com on 10 Sep 2012 at 8:43

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I have experienced similar problem as well on Android phone and laptop 
computers. This is quite annoying since it looks as if devices are connected 
but actually not, and for the whole day one will not receive any email or 
Whatsapp on his phone.

What steps will reproduce the problem?

Phone & Laptop
1. Android phone has Wifi turned on before entering the router's wireless range.
2. Walk inside the wireless range of the router, see the phone is connected to 
the wifi.
3. Open browser on the phone, it said it cannot connect to the Internet.
4. Turn off and then turn on the Wifi on the phone, it can connect to the 
Internet.

What version of the product are you using? On what operating system?

- RT-N56U_1.1.2.3-010_newgui
- RT-N56U_1.1.2.2-006_newgui
- RT-N56U_3.0.2.5-015_newgui

* However, official version from ASUS has no such issue. The version I tried is 
1.0.1.8l.

Original comment by cyril.p...@gmail.com on 5 Oct 2012 at 5:51

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I have a similar issue, but for me the 2.4 GHz doesn't work at all for some 
devices. I.e., no amount of turning Wifi on and off will make it connect.

In addition, for the devices that it does work with, they have to be in the 
same room as the router, which makes no sense because the devices report 
excellent signal strength (~ -56 dBm) even when 3 rooms away.

I did some packet analysis and found that the 2.4 GHz side doesn't send Probe 
Response or Association Response packets to the clients trying to connect. Yet, 
I have no idea how to go about fixing this.

Original comment by varuncva...@gmail.com on 9 Oct 2012 at 5:53

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This is happening to me as well.  Mostly with my Android phones and tablets 
when using them  (all 5 of them) they don't disconnect from the wireless, but 
internet will stop working and I need to disable and re-enable wireless on all 
the devices or in some cases, reboot the router altogether.  Anything wired 
will continue to work.  When this happens, my notebooks also seem to not work 
on the internet as well, again, they stay connected to the wireless, just no 
internet.   If I leave the wireless off on my smart phones, the notebooks stay 
connected to the internet all day long without a hitch.  Something leads me to 
believe that something with the smart phones is fouling up the wireless to the 
point where it doesn't want to share the internet, but yet stays connected 
wirelessly.

Original comment by thinkf...@gmail.com on 2 Dec 2012 at 2:11

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Also wanted to note that this has been going on since I upgraded firmware a few 
months back.   I don't recall the issue happening on the original firmware that 
came with the router.

It also seems to happen every time I enter the wifi range with wireless enabled 
and sometimes just randomly throughout the day. 

Original comment by thinkf...@gmail.com on 2 Dec 2012 at 2:16

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I also face the same issue that ipad is not able to connect back after turning 
off and on the wifi.

Original comment by yohinom...@gmail.com on 12 Dec 2012 at 3:21

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I change wpa2 to wpa and everything is perfect!

Original comment by sitete...@gmail.com on 13 Dec 2012 at 3:27

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Hi do you use wpa-personal wpa-auto-personal , wpa-Enterprises or 
wpa-auto-enterprises ?

Original comment by helio...@gmail.com on 15 Dec 2012 at 1:44

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Yeah, but there's no point in using this router (or any 802.11n router for that 
matter) if you're going to use WPA because the Wifi spec does not allow full 
link speeds when anything but WPA2-AES is used.

Original comment by varuncva...@gmail.com on 15 Dec 2012 at 2:05

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I have experienced the same problem. I'm not sure if it has always occured or 
not, because I updated the firmware very shortly after I got everything 
connected. But I did update the firmware while the router was in AP mode. I 
have had an improved experience ever since I reset the router to its factory 
default settings, and then manually reapplied all of my changes (mostly just 
enabling AP mode). Every once in a while the internet on the iPhone stops 
responding, but it is much less frequent now and I don't notice it anymore.

Original comment by aaron...@gmail.com on 10 Jan 2013 at 6:04

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I just recently purchased and set up this N-56U router as a update to my 
Linksys. Right off the bat I updated to the latest official firmware from Asus, 
I believe it was firmware version 3.0.0.4.334, running on Windows 7, 64bit.  
Immediately noticed some issues with 2.4ghz radio just like everyone else.  
Other than setting a WPA2 PSK, most everything else is on default.  My cell 
phone connects, but data speeds were terrible, my work laptop and second 
desktop in the next room wouldn't establish a connection even though signal 
strengths were great, it was as if I kept putting in the wrong password...  
Anyways, I chatted with ASUS to see if they would be of help in diagnosing the 
problem, but they were useless.  I ended up figuring out that when connected 
through the 5ghz radio, data transfer was smooth as butter, and when trying to 
connect back to 2.4ghz, nothing. Then I changed the "Auto" channel setting to a 
specific channel "8", and lo-and-behold, anything within range connected with a 
smooth data connection.  The problem now seems to be that the range is very 
lacking for a router of this caliber (for example downstairs, or in a room a 
bit further), I get similar problems to what I had originally had on "Auto". 
(i.e. won't connect, terrible speeds).

So sorry for the long winded story/explanation, but if anyone would happen to 
know, is this a Hardware issue?  Or simply a Software/Firmware issue?  Reason I 
ask is because, ASUS said if I can't get it resolved, I can RMA for another 
unit.

Thanks to you all in advance.

Original comment by Gravysau...@gmail.com on 2 Feb 2013 at 6:02

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One more thing I forgot to ask, what firmware is everyone running? Am I running 
on the wrong firmware or something?  I know this thread is a bit dated, but it 
seems most are running versions starting with 1.0.0, where as the current ones 
are 3.0.0..

I don't need anything to technical or advance, just a stable daily router, so 
which firmware would suffice?

TIA

Original comment by Gravysau...@gmail.com on 2 Feb 2013 at 6:10

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Latest ASUS RT-N65U router (2*USB 3.0!) - same problem
All 5Ghz clients (ipad, laptops) work fine, all 2,4 Ghz clients (wdtv live, 2 
iphones) cannot get a stable connection. 2,4 Ghz works if I would turn of 
WiFi-security, which is realy no option.
measures (all useless): 
- latest firmeware
- complet reset to factory settings and new setup
- same sid for 5 and 2,4 ghz or different sid's

This issue did cost me a lot of hours until now and I'm really pissed!

Original comment by weitenba...@gmail.com on 3 Mar 2013 at 4:32

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Same here!
I've exchanged another unit from ASUS but still have the same problem!!

Original comment by squall....@gmail.com on 25 Apr 2013 at 10:16

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Hi.

I have the same problem. Are something new about this problem?

Original comment by elessan...@gmail.com on 2 Sep 2013 at 5:26

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I had similar problems as above. Both my android mobile device and a mac mini 
couldn't recognize the 2.4ghz channel, but could connect on 5ghz. I changed the 
Region Code to USA (channels 1-11) and I selected a specific channel. I live in 
the US and around our house the wifi spectrum isn't too crowded so I wasn't 
that worried about leaving it on one channel. It seems to have fixed the issues 
I was dealing with. I'm running the most recent custom firmware - 
3.4.3.6-068_full.

Original comment by maxb.per...@gmail.com on 13 Sep 2013 at 7:10

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Hi,

Got exactly the same behaviour as you, with very unstable wifi connection, 
whatever the secure mode is. 
After few days I contacted the reseller and he changed the unit. The new one 
works perfectly.

Do not hesitate to ask your reseller for the warranty.

Regards.

Original comment by Tyf...@gmail.com on 1 Oct 2013 at 11:57

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Still having this problems even with the latest firmware. Anybody got a fix for 
that? Or is it a hardware problem?

Original comment by Mauricio...@gmail.com on 29 May 2014 at 4:04

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Hi Sorry to bring up this post, but m having problem with 2 laptops n desktop 
(tried with 2 different USB WLAN adapter). All phones can connect to the 24GHz 
with no problem at all. 

But using the laptops n desktop, it will grab the IP, but it just shows no 
Internet Access. Even i tried to ping the Asus LAN IP oso can't get reply, 
tried to configure static IP oso won't work. ON and Off oso no effect, already 
flashed with latest firmware but to no avail too. 

Would someone care to share what is going on or how to solve it? Thanks in 
advance.

Original comment by droidnp...@gmail.com on 1 Aug 2014 at 1:50

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Guys. My 2.4Ghz is dead. Everytime I try to connect my computers or smartphones 
on it it keeps disconnecting. It's very annoying! I've tried changing every 
single configuration, but without results... Does anybody knows what is going 
on? The router used to work just fine! Now I have to use an old router as an 
access point because my expensive ASUS router can't hold the connections!

Original comment by Mauricio...@gmail.com on 12 Aug 2014 at 6:25

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About a month ago I've got similar problem with N65U. I took it to Asus service 
centre. The device was replaced with new one. Everything took one day.

Original comment by d...@soulblader.com on 12 Aug 2014 at 1:09

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So is this a hardware problem after all? Problem is, I can't replace it because 
I bought this router more than a year ago. I guess the warranty has expired by 
now.

Original comment by Mauricio...@gmail.com on 20 Aug 2014 at 9:06

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Well, I don't know =)
The warranty period is 3 years (as it is written at the box - 
http://root-nation.com/wp-content/uploads/2013/08/asus_n65_n66_02.jpg). But it 
may be different in countries.

Original comment by serge...@gmail.com on 20 Aug 2014 at 10:05

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Oh. I didn't notice that. I'll give it a try. But one last question. Do I have 
to restore it to the default firmware? And if so, how do I do it?

Original comment by Mauricio...@gmail.com on 22 Aug 2014 at 1:50

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I did. This will save both yours and support time )
Download the latest firmware on asus.com. Connect with cable, upload the 
firmware using web interface (nothing special). Restore the router settings to 
defaults using web interface.

Original comment by serge...@gmail.com on 22 Aug 2014 at 2:50

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I have updated the latest firmware for N65U;but it did not solved the issue. My 
devices could not connect on 2.4 GHz with WPA2 authentication. I am will try to 
use WPA enterprise option with Radius server settings... have some one tried 
this ?

Original comment by pradeep....@gmail.com on 24 Aug 2014 at 12:02

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Well. It seems I'll have to contact ASUS directly. The store where I bought the 
router from told me they offer only one year of warranty, but that I could try 
to reach ASUS for repairs.

Original comment by Mauricio...@gmail.com on 11 Oct 2014 at 8:00

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All, I am on Padavan latest firmware and the same happens on 2.4 WiFi.. What I 
did to resolve it was to manually select channel 6, no auto... Also it's on 
WPA2/Personal (AES) and on region code Europe (1-13).

Original comment by danie.st...@gmail.com on 19 Nov 2014 at 7:06

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If you also have problems with iPhone or other "i" devices, you should choose 
"USA" channels. Channels 12-13th (2,4Gh) are not available on these devices. 
Anyway see device spec or try to find out what channels are supported for your 
device first.

Original comment by serge...@gmail.com on 19 Nov 2014 at 10:19

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hi

my iphone 4s cannot connect to wifi 2.4GHz on my router 56u.

but it (iph 4s) can connect to hotspot from my other iphone (5s).

the ssid for 2.4GHz appears. but the connection does not seem to complete. the 
ip address is empty.

pls assist. tq

ltp

Original comment by ltp.ltp....@gmail.com on 31 Dec 2014 at 12:44

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So I just got an RT-N56U (used) and I encountered a similar problem where the 
2.4GHz wifi couldn't even be found by my phone, but the 5GHz one could, 
although that one just won't connect. I fixed the issue with 2.4GHz by manually 
setting the channel, as comment #41 suggested. Channel 6 and 7 (but not 13) 
worked for me, although other channels may work, too. I've got Padavan version 
3.4.3.9-093.

I am unsure if this is actually just a hardware issue or not (could be) because 
when I tried the latest Asus firmware, the issue with 2.4GHz disappeared (don't 
know about 5GHz, haven't tried it) and it worked fine.

I'm glad I found this solution for Padavan, though, since the Asus firmware is 
still awful and buggy.

Btw, I am using a Samsung Galaxy S4 with Cyanogenmod 11 (Android 4.4.4) 
installed on it. I've had other issues with my old router in the past, too; it 
seems android is a bit picky about routers. Will report on other phones later 
when friends visit.

Original comment by hmen...@gmail.com on 7 Apr 2015 at 3:55

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Having this issue with firmware version RT-N14U_3.4.3.9-099_full.trx (device: Asus RT-N14U).

Channels are set to "Russia", channel is set to 5th.

iPad Air 2 with the latest iOS (as of Nov 6, 2016). After reboot - iPad is disconnected from Wifi and does not connect to previously active/selected Wifi network. After several manual attempts iPad connects back.

Will try to change channels set to "US" and switch using channel 6.