Develop Bugs

Won't connect to Cisco E4200 router with N only G!

Hi,
Just received my Galaxy Nexus earlier today and have been battling to have it attempt a connection to my WiFi router at home, it'll have a go at the neighbours routers but just says 'saved' on mine and never connects or fails regardless of password given or settings used.
Well - I just found the issue, if I set the E4200 to 'G' mode the phone connects perfectly, but it WILL NOT connect to the router set to 'N' speeds on 2.4 or 5GHz using 20 or 40 MHz channel width.
Anyone found there are potential issues with this phone and 'N' routers? I should mention I've tried 3 different kernels (stock, modaco and franco) and 3 different ROM's (4.0.1 stock, 4.0.2 Revolution HD and 4.0.3 build in the dev section) and all exhibit the same issue. Have not changed baseband as I'm using a 'T' model and want to keep my I9250TDVKK6 modem - this is probably where the problem is anyway.
Anyone else having similar or found a workaround or solution? Thanks!

Hi,
have you tried settings the MHZ band on auto or anything besides just 20mhz band? not many devices like this channel, I'm not having any trouble on the Aerohive system at work or other Netgear at home.

Thanks for the thought! 20 is standard but I've tried every setting - it will connect on 2.4GHz using 'G' fixed speed/protocol or 5GHz only using 'A', neither works at all on 'N' on any channel, width or security
It is bizarre, it's like the phone decides it won't try and says "saved" on the profile once the password is put in when its on "N" there is no connecting, authenticating or getting an IP feedback at all, it does nothing really. If I choose another working AP after trying an "N" one the "N" one says 'disabled'.
My SGS2 worked flawlessly and without complaint previously on any "N" or otherwise setting.

I have the same model router, and it is working for me. I have both the 2.4 and 5 ghz set to mixed network mode. Channel width set to auto, and security/encryption matching on both frequencies. On the Nexus, I have the 5 ghz specified in Wifi settings.
Sent from my Galaxy Nexus using xda premium

I have this model and connect via the 5ghz connection with no problems.

Same with E3000 with DD-WRT and Virginmedia Superhub
I've been suffering with this problem for a while now. I bought mine on the 19th Nov and tried it out in pure 5 Ghz mode almost straight away and was very impressed with the throughput from my 50Mb Virginmedia cable connection (40+Mb/s with Speedtest.net app).
All was well until I suddenly couldn't connect. It said the SSID was saved and the signal was excellent but tapping "connect" did nothing. I presumed my phone was acting a little screwy so did a had reset (stock unrooted 4.01F YAKU) and tried again but still suffered the same problem.
I started to suspect it could be a channel issue as the GN only supports a handful of 5Ghz channels, so set them accordingly in DD-WRT on my E3000...same result.
To rule out the router, I activated the 5Ghz wireless on my Virginmedia Superhub and what do you think happened?? Exactly the same as before. Everytime I tapped connect, there was no evidence of and attempt to connect to the network. I then tried the 5Ghz SSID on the E3000 and got the same result with the Superhub one dropping back to "disabled" as the OP noticed.
I'm trying to recall if the problem occured before or after the volume fix OTA but I can't really remember to be honest. I'm sterting to think that the handset is faulty as only a couple of people seem to be suffering with this issue...
---------- Post added at 09:50 PM ---------- Previous post was at 09:38 PM ----------
I Googled the issue again and discovered a post on Androids bug posting forum which seems to indicate it's a hardware fault:
http://code.google.com/p/android/issues/detail?id=23296
I think a trip back to Phones4U is in order for an exchange.

It's happened again!!
I have the same problem with the replacement handset as before. I had just been using 5Ghz, disconnected and when I tried to reconnect, it just sat there as if I hadn't selected "Connect". I've been looking around on various forums and I'm inclined to think that they just die after a while as there arer many other posts similar to this with lots of people trying saying the same as I (and the OP did). Mine has been fine for over 2 months and suddenly has ceased to work...Looks like a warranty replacement this time as P4U were kind enough to replace the handset in-store even though I was out of the 30 day exchange period as I had shown them this forum post indicating it was a known problem that other users were suffering...Technology always fails me in the end

..

Wi-Fi on the GN is horribly broken—you just need to accept it until the Android developers get their heads out their *sses and fix it. Using our Cisco enterprise-class access points, the GN cannot connect at 5GHz—though every other Wi-Fi device that supports 5GHz can. That said though, the GN CAN do 11n over 2.4GHz. Go into Settings, Wireless and Networks, Wi-Fi and tap on your SSID. This should show you your link speed and 72Mbps is as good as you’re going to get with a 20MHz channel and the GN hardware—mine shows 65Mbps and this is an 11n speed, albeit a slower one. From the configuration of our enterprise-class access points, 11g covers “6.0, 9.0, 12.0, 18.0, 24.0, 36.0, 48.0 and 54.0”—whereas 11n covers “m0-m15” (MCS index). The GN only supports m0-m7 and, currently, my GN is connecting at m6.
Hope this helps! At least a little.

No internet access after switching between Asus RT-AC66U and data

I have no internet access on one certain wifi router (asus rt-ac66u), with my n7 lte, although I can access the internet on other routers and through the dataa connection, I can access my router management though. I did a factory reset of the router and that solved the problem temporarily but the problem came back. Just switching router/tablet on/off doesn't solve the problem
edit: well after turning on/off the n7 wifi worked but now data doesn't work when I disable wifi

godutch said:
I have no internet access on one certain wifi router (asus rt-ac66u), with my n7 lte, although I can access the internet on other routers and through the dataa connection, I can access my router management though. I did a factory reset of the router and that solved the problem temporarily but the problem came back. Just switching router/tablet on/off doesn't solve the problem
edit: well after turning on/off the n7 wifi worked but now data doesn't work when I disable wifi
Click to expand...
Click to collapse
bumb

HELLLLLOOOOOO, is there anyone out there!?

godutch said:
I have no internet access on one certain wifi router (asus rt-ac66u), with my n7 lte, although I can access the internet on other routers and through the dataa connection, I can access my router management though. I did a factory reset of the router and that solved the problem temporarily but the problem came back. Just switching router/tablet on/off doesn't solve the problem
edit: well after turning on/off the n7 wifi worked but now data doesn't work when I disable wifi
Click to expand...
Click to collapse
Have you upgraded to version 3.0.0.4.374.979?
http://dlcdnet.asus.com/pub/ASUS/wireless/RT-AC66U/FW_RT_AC66U_3004374979.zip

godutch said:
I have no internet access on one certain wifi router (asus rt-ac66u), with my n7 lte, although I can access the internet on other routers and through the dataa connection, I can access my router management though. I did a factory reset of the router and that solved the problem temporarily but the problem came back. Just switching router/tablet on/off doesn't solve the problem
edit: well after turning on/off the n7 wifi worked but now data doesn't work when I disable wifi
Click to expand...
Click to collapse
If flashing the latest firmware doesn't help. You can try and change the wireless mode of your router. Log into mgmt. Navigate to your wireless settings, change "wireless mode" from "auto" to "N Only."
It's worth a try. What that will do is force N band only, whereas on auto when a g/b band connects the router switches to b/g mode, and that might mess with the Nexus. If the problem you encountered was fine with a factory reset temporarily, all it would take would be a "g or b" band device to log on to kill your n band and dumb down to g/b band.
It's not a bad idea if you don't have any b/g devices to turn off 'auto' anyways. The jury is still out on whether or not it actually benefits an all "N" environment, but it sure as hell won't be switching to G or B on you.
Those routers had issues with their early versions of firmware. They might have straightened it out by now. Upgrade it!

fosser2 said:
Have you upgraded to version 3.0.0.4.374.979?
http://dlcdnet.asus.com/pub/ASUS/wireless/RT-AC66U/FW_RT_AC66U_3004374979.zip
Click to expand...
Click to collapse
I will try this....
@makers_mark, there are still some g devices which need to connect

fosser2 said:
Have you upgraded to version 3.0.0.4.374.979?
http://dlcdnet.asus.com/pub/ASUS/wireless/RT-AC66U/FW_RT_AC66U_3004374979.zip
Click to expand...
Click to collapse
didn't work

No one has any ideas on where to look?

godutch said:
No one has any ideas on where to look?
Click to expand...
Click to collapse
Try changing the WIFI channel used in your router. My nexus 10 had issues on certain channels especially on 5GHZ.
You may also have a Wifi region setting somewhere on your nexus. I remember seeing it before but can't find it right now. The region basically locks your nexus to (possibly) the wrong channels. IE. Not all euro channels work with american wifi channels

bntran02 said:
Try changing the WIFI channel used in your router. My nexus 10 had issues on certain channels especially on 5GHZ.
You may also have a Wifi region setting somewhere on your nexus. I remember seeing it before but can't find it right now. The region basically locks your nexus to (possibly) the wrong channels. IE. Not all euro channels work with american wifi channels
Click to expand...
Click to collapse
I tried different channels and connecting to 2.4 GHz only.

Help!

HELP!!

Let's divide the problem into smaller pieces - is this an N7 LTE problem or ASUS router problem?
Get another router (I use the Asus RT-N66U) and test if it works with the N7 LTE. If it does, then it's your' router.
If it does NOT work wit hth eN7 LTE, then it's your N7 LTE probably have a bad chip.

I installed the kitkat factory images and the problem still persists :crying:

Oneplus 3 - Issues with 5GHz WiFi?

Hello,
I seem to be having an issue with connecting to my 802.11ac router (Apple's Time Capsule). In "Automatic" mode, it connects to my SSID via 2.4GHz only. When I go to Settings > Wi-Fi > Advanced and choose Wi-Fi Frequency band as 5Ghz it finds 0 networks in the area.
FYI - I'm on 3.1.3 OxygenOS.
Is anyone experiencing similar issues?
Best,
Mash
Edit: To be clear, I have several devices including my laptop that are connected to the 5Ghz band. I've also used a WiFi scanner in my old S6 Edge to verify that there are SSIDs broadcasting in the 5Ghz band.

I use 5 GHz network at home and it works fine with my op3.
Wysłane ze zmywarki

using 5Ghz on Fritzbox, i also use diffrent ssid names for 2,4 and 5ghz and also different passwords

Thanks guys. Are both of you on 3.1.3? I'm trying to isolate the issue here...

mash2u said:
Hello,
I seem to be having an issue with connecting to my 802.11ac router (Apple's Time Capsule). In "Automatic" mode, it connects to my SSID via 2.4GHz only. When I go to Settings > Wi-Fi > Advanced and choose Wi-Fi Frequency band as 5Ghz it finds 0 networks in the area.
FYI - I'm on 3.1.3 OxygenOS.
Is anyone experiencing similar issues?
Best,
Mash
Edit: To be clear, I have several devices including my laptop that are connected to the 5Ghz band. I've also used a WiFi scanner in my old S6 Edge to verify that there are SSIDs broadcasting in the 5Ghz band.
Click to expand...
Click to collapse
Got a 3TB time capsule here. OOS 3.1.3 - on automatic, it only connects to 2G despite having full 5G signal, however if i switch it to 5G only, it finds both main and guest networks in that band and connects fine Try re-flashing stock rom

Thanks - I'll try and do a nandroid backup and reflash to see if that fixes the issue.

mash2u said:
Thanks guys. Are both of you on 3.1.3? I'm trying to isolate the issue here...
Click to expand...
Click to collapse
3.1.3 stock, not rooted

Check what frequency and channel width your 5ghz band is set to, one time I changed my 2.4ghz and my ps4 couldn't detect it til I changed back.

Just tried 5Ghz without issue using channel widths 20Mhz, 40Mhz, and 80Mhz.

TritonB7 said:
Just tried 5Ghz without issue using channel widths 20Mhz, 40Mhz, and 80Mhz.
Click to expand...
Click to collapse
Thanks guys. I wonder if I've got a lemon.
I've just reflashed 3.1.3 and even then can't find or detect ANY 5GHz SSIDs. This is so frustrating.
I guess a call to support is the way forward.

mash2u said:
Thanks guys. I wonder if I've got a lemon.
I've just reflashed 3.1.3 and even then can't find or detect ANY 5GHz SSIDs. This is so frustrating.
I guess a call to support is the way forward.
Click to expand...
Click to collapse
Check if you are able to connect to a different 5GHz Network. It _might_ be an issue with the router itself.
Mine OP3 connects to 2.4 and 5 without any problems (TP-Link Archer C7).

mash2u said:
Thanks guys. Are both of you on 3.1.3? I'm trying to isolate the issue here...
Click to expand...
Click to collapse
I'm on non rooted 3.1.2.

It works fine for me on 3.1.2 and 3.1.3
Wysłane ze zmywarki

Just wanted to report - no issues with 5GHz networks whatsoever, used 3.2.0 and 3.2.1 now.

Try to change channel to 40 and try had this issue whit some phone
From North Pole

I am facing the same issue my phone can scan 5GHz wifi but it does not connect and error shows wifi connection failure.
I am on 3.2.1 and my router is ASUS WRT68u
Please do share if any solution is found!

m_usmanayub said:
I am facing the same issue my phone can scan 5GHz wifi but it does not connect and error shows wifi connection failure.
I am on 3.2.1 and my router is ASUS WRT68u
Please do share if any solution is found!
Click to expand...
Click to collapse
Channel 36 for 5ghz is confirmed working for me on latest update, rooted etc

for me connect to 5 ghz but in seconds turn automatically to 2.4 ghz
update to 3.2.1 and the problem still there

ALUCARD4DEAD said:
for me connect to 5 ghz but in seconds turn automatically to 2.4 ghz
update to 3.2.1 and the problem still there
Click to expand...
Click to collapse
Try going into advanced wifi settings and setting your network mode to 5ghz only. Inconvenient but will do the job.

manor7777 said:
Channel 36 for 5ghz is confirmed working for me on latest update, rooted etc
Click to expand...
Click to collapse
does not work here.... tested on both rooted and unrooted

Anyone else having WiFi randomly disconnect and reconnect?

I just got this phone yesterday and so far I just cannot get it to stay connected to my network. No other devices are having this problem. It basically just seems to constantly connect and disconnect from the wifi and also seems to constantly search for other connections as well. I've tried factory reset, cache clearing(which never works as it just red triangle error's me), reset the router, tried to change settings in phone itself but nothing seems to fix it and it's making it impossible to use at home. Anyone have any suggestions?

Same thing here. I went in and turned off all the wifi in battery power saving exclusions. Ain't been home long enough to try though.

I'm having this same issue! My prior daily (S9+) didn't have this issue, and my Pixel 2XL doesn't have this issue. I could be right next to the router and it still does this. Doesn't seem to matter if I'm at home, work, parents house, or a cafe, it still randomly loses connection. Same with my Gear S3. Just randomly loses connection. It's pretty annoying, and I hope they offer a software fix. Yes, I factory reset the phone and it still occurs.

I noticed this only with the 5 GHz band... I will contact LG about it today...

Yeah, I'm having the same issue. My router broadcasts both 2.4 GHz and 5 GHz on the same SSID. Last I'd heard, Android wouldn't connect to 5 GHz in that circumstance, and my G7 appears to continue that trend.
But it still disconnects from the network all the time.

Sadly I have the same issue. I have different SSID for 2.4 and 5Ghz band, and as devil_tear says it's fails only with the 5ghz band. I did a factory reset but issue stills there.
Did you found a fix for this issue?

Had the same problem. Solved by enabling wifi on the battery saving power exclusions in the battery menu.

mprovi_15 said:
Had the same problem. Solved by enabling wifi on the battery saving power exclusions in the battery menu.
Click to expand...
Click to collapse
Thanks a lot for this tip.

Had the same problem, was burning through my 4G data at a rate much faster than on my Google Pixel.
So far, adding wifi to the power saving exclusion has seemed to fix the issue. Thank you!
PS: Does any else find the wifi signal on this phone is weak?

mprovi_15 said:
Had the same problem. Solved by enabling wifi on the battery saving power exclusions in the battery menu.
Click to expand...
Click to collapse
Great suggestion

Tried the suggestion here for adding WiFi to exclusion. WiFi on 5ghz still disconnects and reconnects every few seconds. Only way to keep it connected is putting it on 2.4ghz.
Tried the suggestion with reboots, factory reset, adding WiFi to exclusion and then connecting to the network. My g7 will just not work with it.
Sent from my LG-G710 using Tapatalk

involuntaryqool said:
Tried the suggestion here for adding WiFi to exclusion. WiFi on 5ghz still disconnects and reconnects every few seconds. Only way to keep it connected is putting it on 2.4ghz.
Tried the suggestion with reboots, factory reset, adding WiFi to exclusion and then connecting to the network. My g7 will just not work with it.
Click to expand...
Click to collapse
Have seen this also, in my case it happens when I am a bit far from the router, it may be the router not having a strong stable connection so the phone see it doesn't have internet. In the points I experience that I have a 5Ghz connection of 0-2Mb but I have maybe 2 bars of connection. Share your opinions to try to understand the problems.

mprovi_15 said:
Have seen this also, in my case it happens when I am a bit far from the router, it may be the router not having a strong stable connection so the phone see it doesn't have internet. In the points I experience that I have a 5Ghz connection of 0-2Mb but I have maybe 2 bars of connection. Share your opinions to try to understand the problems.
Click to expand...
Click to collapse
For me I would say it happens more if I have 2-3 bars but nonetheless it happens even 3ft away from the router eventually. what's odd is my note 5 stays connected, my computer, and other phone stay connected on the 5ghz band. All these devices are in the same location so I'm pretty dumbfounded especially considering this is a newer phone than the note 5 lol. I hope it can be fixed with an ota update
Sent from my LG-G710 using Tapatalk

I have the same issues. I sent back the first phone for a replacement thinking it was the issue. When the second phone arrived it was working perfectly and then it happened again.
I noticed this happened after I took whatever software update was offered. I went as far to switch providers with different equipment (fibe to cable) but same result.
Made specific 2.4ghz SSID for LG G7 and no issues.

I've never seen this happen. And my laptop and LG are using the same 5 ghz signal.
I think I remember the G6 doing this though

Falkentyne said:
I've never seen this happen. And my laptop and LG are using the same 5 ghz signal.
I think I remember the G6 doing this though
Click to expand...
Click to collapse
Just came back from my dad's house and I know it's a short test, however he has an Archer a7 connected after his dedicated provided box. I wonder if that can fix the issue?

I have the same issue.
it connects to 2.4Ghz networks fine but the range is very limited when I move to another room wifi reception decreases a lot. However my wife`s S9+ and my oneplus 6 works fine.
Main problem is when I connect to 5Ghz network it starts disconnecting and reception is even worse than 2.4Ghz. S9 and Oneplus connection is still fine at 5Ghz
I tried to change the 5ghz channels on the router but no luck and I exclude the WIFI from battery saving apps still didn`t work.
I have to use 2.4Ghz and the reception is not as good as other phones

Wifi seems stable for me, except wifi calling. That would crash at connection or even mid-call sometimes. I'd have to reboot to make or receive another call. Some sort of server error. Turned off wifi calling and no issues yet. Didn't notice Ed it anyway since 4g is really strong here.

After the newest update on my phone, taken today Oct 4th, 2018/my random WiFi disconnects haven't been happening at all on 5ghz. Also, the signal is about 3 bars larger now in the same location it used to be dropping out constantly. Hopefully it stays this way.
Sent from my LG-G710 using Tapatalk

involuntaryqool said:
After the newest update on my phone, taken today Oct 4th, 2018/my random WiFi disconnects haven't been happening at all on 5ghz. Also, the signal is about 3 bars larger now in the same location it used to be dropping out constantly. Hopefully it stays this way.
Click to expand...
Click to collapse
I was coming in to report something similar. I've got the US T-Mo version and just got the G710TM10K update yesterday.
WiFi stability has massively improved. Disconnects are almost completely nonexistent now. I haven't noticed that the signal bar is behaving any differently, but that doesn't mean a whole lot. The update was fairly large (over 400 MB), so I could see new firmware playing a role.
Could anyone still on G710TM10G post their data from Software Info to check if the baseband has been updated? Here's mine from 10K:
Android Version: 8.0.0
Android Security Patch Level: September 1, 2018
Baseband Version: MPSS.AT.4.0.c2.9-00045-SDM845_GEN_PACK-1.160685.1.163435.1
Kernel Version: 4.9.65
Build Number: OPR1.170623.032
Configuration Version: 2.350001
Software Version: G710TM10k
Security Software Version: MDF v3.1 Release 3

Question 5ghz WiFi Issue

I bought a Poco F4 (global version, xiaomi.eu 14.0.5.0) about one month ago, I haven't had any issues with it whatsoever, save for the fact that it suddenly won't detect my 5ghz WiFi networks (my main router + a repeater) - and I'm not even sure if this is an issue with the phone itself.
I'm coming from a Samsung Galaxy S20 FE, which was known to have this issue, but to have this happen on 2 different phones is really weird. If I recall correctly this issue started to affect me after I changed my ISP.
The only ways I have to detect the networks again is to go the debug mode and use the WiFi Sniffer Test Tool or reboot the phone, which was more or less the same thing I had to do on the S20 FE (I had to go turn on airplane mode try updating the firmware via debug mode).
What I've tried so far to solve this issue:
1. Changing the channel of the 5ghz WiFi
2. Changing the bandwith from 20/40/80 to 20/40
3. Setting "Use Device Mac" on the phone's network settings.
4. Turning off WiFi Scan Throttle
5. Changing the bandwith to 20
All of the above methods, save for the last one, did not work. And while it does work, it limits the speed of my internet to bellow 100mbps.
The issue is not related to the WiFi coverage as well since it only happened when I'm on my own room, which is where my router is located.
I don't know if I can detect other networks apart from my own since even when they 5ghz detection is working I can't find any of my neighbors' networks. I'm unable to create a 5ghz hotspot on my S20 FE or on my old Redmi Note 9S for some reason.
I'm at a loss on what to do, it happens on both stock and xiaomi.eu, at least and at most once per day.
If anyone else is facing the same issue or has any suggestion on what I should try next please let me know.
Thanks in advance.

I have no problems with 5G Wifi on xiaomi.eu rom
All the time 300Mbit/s
Buy Wifi6 router

This doesn't look like a problem with the phone (s).
Try connecting to another router to see if you have the same problem.

0kti said:
I have no problems with 5G Wifi on xiaomi.eu rom
All the time 300Mbit/s
Buy Wifi6 router
Click to expand...
Click to collapse
Are they on any specific channel/bandwith?
Both of mine are WiFi 5 though.
Thanks for the reply.
TheMystic said:
This doesn't look like a problem with the phone (s).
Try connecting to another router to see if you have the same problem.
Click to expand...
Click to collapse
Thank you for your input. I'll try to turn on my old router when the issue happens again. I find it odd that the issue affects both my main router and the one I use as a repeater, but everytime I made any slight change on the main router, the other one's signal almost immediately disappears to apply the changes as well, so it's probably that.

mode: 802.11a/n/ac/ax
channel: 48
bandwith :80MHz
I'm using Tenda TX3 Wifi6 router.
No issues at all. Great internet speed on wifi connection.

furquim97 said:
Are they on any specific channel/bandwith?
Both of mine are WiFi 5 though.
Thanks for the reply.
Thank you for your input. I'll try to turn on my old router when the issue happens again. I find it odd that the issue affects both my main router and the one I use as a repeater, but everytime I made any slight change on the main router, the other one's signal almost immediately disappears to apply the changes as well, so it's probably that.
Click to expand...
Click to collapse
The problem is indeed with your router + repeater setup. Your phones are fine.

0kti said:
mode: 802.11a/n/ac/ax
channel: 48
bandwith :80MHz
I'm using Tenda TX3 Wifi6 router.
No issues at all. Great internet speed on wifi connection.
Click to expand...
Click to collapse
Thank you! I'm almost certain that the issue is that the bandwith isn't fixed at 80mhz, it's 20/40/80mhz, and when I had the bandwith set to 20mhz I didn't had the issue.
TheMystic said:
The problem is indeed with your router + repeater setup. Your phones are fine.
Click to expand...
Click to collapse
Thank you! It's probably related to the bandwith. I was able to turn on an old router and my phone was able to detect the 5ghz network after the bug happened and my router + repeater signal was missing.

Have you tried resetting your router to the default settings? Or maybe set a specific IP address on your phone in your home network? As said above, it is a setup issue of your network most probably..