Question How to disable 2.4Ghz WiFi on root? - Samsung Galaxy Tab S8

I've been getting a slow to fair connection on Steam Link, which really bothers me. I have 1GBPS WiFi from Xfinity with 40MBPS upload speed, both of which should allow me to connect to my computer very well. My computer is hardwired via ethernet, so that's not a problem, however Steam Link never labels my connection "Good." I have heard that this is the result of the WiFi on board Android opting to pick 2.4Ghz, and I've been looking to disable it. I couldn't get the package to install on Fox's Magisk for the 2.4Ghz WiFi disabler add on, so I searched around the forums and checked both my settings, as well as developer options. I even looked in data/misc/wifi, but there wasn't anything there I could tinker with to help with this. I did turn WiFi safe mode on in hopes to improve the stability of my device's WiFi, but this is as far as I've gotten.
Does anyone have suggestions for disabling 2.4Ghz or otherwise increasing my WiFi speed on here? I would really like not to have to seperate the bands manually, as last time that caused a host of problems with other people's devices in my household.

For what it's worth, and I'm aware this doesn't answer your question directly, nor help you right away, but my router allows me to use a single SSID for both 5GHz and 2.4GHz, and it automatically connects at the highest frequency a device can handle.
My point is that I don't think the issue is Android, because I've consistently gotten 5GHz Wi-Fi on my Pixel and Samsung devices in the last four years I've had this router.
I know you already discount this possibility but just for anyone else who comes across this...
Other than possibly buying a different router (I use Synology routers, and they just came out with a new one that I might upgrade to sometime), another potential workaround is for you to configure your router to use different SSIDs for the two frequencies, and then just never connect from your Tablet to the 2.4GHz SSID. I know this might be a PITA or possibly even just not a realistic solution, depending on how many other devices (smart devices) you already have configured to connect to your existing SSID.

roirraW edor ehT said:
For what it's worth, and I'm aware this doesn't answer your question directly, nor help you right away, but my router allows me to use a single SSID for both 5GHz and 2.4GHz, and it automatically connects at the highest frequency a device can handle.
My point is that I don't think the issue is Android, because I've consistently gotten 5GHz Wi-Fi on my Pixel and Samsung devices in the last four years I've had this router.
I know you already discount this possibility but just for anyone else who comes across this...
Other than possibly buying a different router (I use Synology routers, and they just came out with a new one that I might upgrade to sometime), another potential workaround is for you to configure your router to use different SSIDs for the two frequencies, and then just never connect from your Tablet to the 2.4GHz SSID. I know this might be a PITA or possibly even just not a realistic solution, depending on how many other devices (smart devices) you already have configured to connect to your existing SSID.
Click to expand...
Click to collapse
I mean, the two seperate SSID's is a valid solution, just one I'm not currently willing to use.
Here's something strange that made me believe that it's an Android issue. I previously used Steam Link on an IPad and got a good connection, I then moved over to Android and don't. It's very bizarre. I also can't backspace in Chrome Remote Desktop on Android for some reason. Also bizarre.
I do totally want a new router, but I'm tapped out of money for the foreseeable future anyway. We have the most up to date Xfinity router though, which I think is from 2018 or some such thing, to its credit, the internet almost never disconnects, and when it does, it fixes itself within around 60 seconds. Previous xfinity routers would disconnect frequently, and would require a reset to get working again.

Easiest is to have two different SSID's and different password for each. That way your galaxy tab will only connect to 5GHz and won't use 2.4GHz as long you don't connect to it with password for it.
Since if you name 2.4GHz and 5GHz same SSID then it will connect to 2.4GHz or 5GHz and keep switching since both have same SSID and password.

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my wag300n reboots during web surfing with kaiser

Hi, is there anyone having this issue using wifi? My linksys wag300n reboots after few minutes of use with kaiser. Linksys customer support doesn't know how to solve the problem.
I tried changing the channel but with no result. It lasts max 5' then the router reboots and the kaiser doesn't connect anymore.
Hi
If your box reboots it is a problem with your router as it is of course a security hole that could allow a denial of service attack. Your router shouldn't reboot no matter what tries to connect to it.
The Kaiser is Wi-Fi approved and has worked with no issues wherever I have tried it, as far as I can see your router isn't, this means it probably lacks the testing and interoperability of other routers that have gone through the testing procedure to get the Wi-Fi logo.
I would check for updated firmware for your router, that may help. Often disabling security and encryption will see things play a lot better together however you don't really want to do that.
You may need to get a new router for it to work reliably
Regards
Phil
The firmware is the latest, and linksys assistance is futile, suggesting channel switching and ssid renaming...
Wireless works flawlessly with a notebook, but with kaiser lasts only few minutes, and of course is NOT kaiser's fault, infact i didn't even bother contacting HTC.
ATM i think that you're right: the only solution is getting another box.
Thanks for your reply
The linksys WAG devices are a royal pain in the a.......
Switch to a better router would be my choice..... It seems unless your paying a squilian bucks for a TRUE cisco device, then Cisco stuff sucks.... However all my Cisco stuff works a treat (for the most part).
If you do go searching out a new router, and like to flash roms on more than just your phone, check out these routers at this link
http://www.dd-wrt.com/wiki/index.php/Supported_Devices
it's a free linux-based system that you can flash on various routers that adds tons of functionality to the device. i have the standard install of dd-wrt on a wrt54g v2 linksys router, and it works flawlessly.

Need help filing a bug report on 802.11n connection losses

German G1, stock firmware CRC37, 2.6.27-00393-g6607056
Well, I am in the process of upgrading to 802.11n routers. At my family's place this turned to be a Linksys WRT160N, here at home it's a Buffalo WZR-HP-G300NH.
With both routers, I am having trouble establishing reliable connections. I've been looking a bit more into it with my Buffalo router: the phone connects to the WLAN, but finally, varying from a few seconds to several minutes, i receive timeouts resulting in UnknownHostExceptions. Toggling wifi will restore connectivity, just to run into the same problem again.
I have had no problem with my Linksys WRT54G, nor with any other devices in my place (two 802.11n devices, a MacBook Pro and an AppleTV). There's also a Wii (802.11g/b?!) and an HP 2133 (802.11n) I haven't tried yet.
The Buffalo router operates on a custom Linux, 40MHz bandwidth, WPA2/AES in the 2.5MHz spectrum, 3 Antennas, 300MB (mimo).
All in all, googling makes me believe that a fair amount of people have problems in similar settings, but none of what I found could point directions into a solution.
Router setup is not the issue (i have been able to reproduce in two totally different setups that work with any other devices I have tried). Neither do I believe that a mix of 802.11g and 802.11n devices necessarily causes these kind of problems (at my family's place a 802.11g imac works flawlessly alongside of my 802.11n MacBook in an 802.11n network).
I am attaching a logcat that I captured while producing the problem. It only illustrates the problem a little.
In the end, probably the broadcom WLAN chip/driver gets stuck at one point and android cannot do much against it. If this is the case, posting a bug report against google/android open source developers probably won't help much, as it seems to be an issue of the driver/wifi chipset combo HTC/TMo uses in the G1.
If you agree on this, in the end I am looking for a way to file a bug report either at htc or t-mobile, but contrary to Android/Google, I haven't found anything on the net that I can file a bug report into... 1.0 companies *sigh*
What other ideas do you have? While I could leave the G1 just on 3g while at home, I don't have reception in every corner and the whole point of having it is being online essentially most of the time in order to catch my mail (it is set to keep wifi on while charging).
Regards
Interestingly, if I start streaming after connecting to WIFI, like speedtest or YouTube, the connection stays alive for the time being...

Can't connect my N1 with Linksys router

Hello
My N1 can connect easily to all kind of wifi routers and modems without problem but not with my fitness club's one, they have a Linksys N160.
My N1 can detect the signal,enter the password but then it's stucked with the message ''getting ip...''
Where is the problem? is it a know hardware or software compatibility stuff?
Sometimes rebooting the wifi router helps. Also make sure that when the guy over at your fitness club reboots the router you don't have the wifi of the club saved. delete the saved wifi profile, reboot the wifi router and then try. Cheers.
Already tried it several times. I saw that OS4 of iphone/ipod have the same problem with router enabling Wireless-N, I will ask him to limit the router to B/G
I also had similar problem with Linksys WAG54G2 (at latest firmware). Then I changed to much cheaper adsl router, TP-LINK WD-W8960N and no more connection problem.
Sent from my Nexus One using XDA App
I had problems using my Nexus One on my SMC Barricade 802.11b/g/n router when 802.11n was enabled. Turned it off; problems were gone. I don't think that works well yet, though some people have said otherwise. Could be a router-specific issue.
Ok so it's a WAG160N to be specific.
He tried to use mixed B/G instead of mixed (which would imply N too) but it still stuck at getting ip...
I told him to throw this router in the garbage because anyway SE and HP mobiles can't connect too,but he said he would do it but his boss will never accept to pay a penny more
My parents had a router that did exactly the same, my phone got stuck on Obtaining IP, whilst the missus 5800 connected and broswed just fine.
It was a crappy old thing and they replaced it the other week, now I can connect and browse just fine.
I also use a linksys WAG160N.
bought a nexus one, could not for the life of me get an internet connection.
turns out dns on router is poofed, so i just set DNS from my isp manually on the nexus one together with a static ip and booya interent at full 802.11n speeds.
sometimes its the simple things.
This sounds similar to when I set my router to channel 13 or whatever the max was on it. My N1 would only sometimes get a connection, but would eventually drop it and stay off. Solved it by selecting a lower channel (WifiAnalyzer suggesten channel 1 as the best alternative to channel max) on the AP.
I can see that in CM6 nightly that I have since started using I can choose regulatory domain, and thereby open up channels previously blocked. If you can't change anything on the AP this might help you solve the problem on your end.
So suggestions if none of the posts above me provide a solution is to run WifiAnalyzer and see how the channel-graph looks.

My Razr i makes WiFi drop/crash

Hi folks !
Recently I started to experience some troubles using my WiFis connections. The problem is simple, the connection drops, the WiFi network disappears from all the devices, and a few seconds later it comes back.
At first I thought it was a problem with the router of my work. But then I started to experience the same things at home. Then I decided to test the WiFi without connecting my Razr i to it and it worked like a charm. Now, as soon as I connect my Razr i to a WiFi, it crashes a few seconds/minutes later and keep doing it until I disconnect my phone from the WiFi.
Did someone experience the same thing ? Have you any idea for solving the problem ?
Thanks anyway.
PS : I only use 5Ghz WiFis. I'll try with 2.4 soon but the 5Ghz compatibility was one of the reasons why I bought this phone...
We have also issues with our WLAN at home, which is sometimes (but not always) very unstable in connection with a Samsung 5 Laptop (regular reboots shortly after activating the laptop Wifi).
I did not experience this problem yet with my Razr i, but I will keep it in mind over the next days (we have a complex setup with several computers, phones and Android entities based around a Fritzbox 7390, so error identification and validation takes very long and is not finished yet).
BTW - if you look for help here, please specify your WLAN router in detail as well as your provider and general IT-setup.
Tevac said:
We have also issues with our WLAN at home, which is sometimes (but not always) very unstable in connection with a Samsung 5 Laptop (regular reboots shortly after activating the laptop Wifi).
I did not experience this problem yet with my Razr i, but I will keep it in mind over the next days (we have a complex setup with several computers, phones and Android entities based around a Fritzbox 7390, so error identification and validation takes very long and is not finished yet).
BTW - if you look for help here, please specify your WLAN router in detail as well as your provider and general IT-setup.
Click to expand...
Click to collapse
Well ! Thanks for the reply.
My router that provides the two WiFis is a Cisco Linksys WRT61N.
My setup is kinda complex but works well. Got another router provided by my ISP, which is the DHCP server. This router is connected to a port of the WRT61N switch. Not to the internet port. Every connection that enters in the ISP router goes to the Linksys, and then is NATed by it. I don't think those informations are very relevant but anyway here they are. That's a complex setup but it works well (needed to do that because I have cable connection, and the cable modem/router have very limited configuration).
The devices that use my two WiFi are :
2.4Ghz : My Razr i right now.
5Ghz : Two iPads, and the HTC 8X of my girlfriend.
I made some other tests, one the Razr i there is an option for switching on or off a kind of network frequency. So instead of both enabled, I enabled only the 2.4Ghz WiFi frequency and connected my phone to my 2.4Ghz WiFi. No problems detected. Stable connection. Right now I'm at work, and everything works well in 2.4Ghz. So there is clearly a problem with the 5Ghz frequency on my Razr i.
Anyway, during those tests, I discovered something very interesting. My battery life had a huge improvement with the desactivation of the 5Ghz WiFi frequency.
Thanks for the details - especially on the 2.4/5 GHz topic.
I am also at work right now, but will check it at home and keep you posted.
WPA2
I had the same problem, I think it was triggered everytime the phone went to "sleep". It was changing the security encryption that fixed it for me. I can't remember what i had on the router as default, and I'm not at home right now to check what I'm running, but I believe it's WPA2. After the change, I had no trouble whatsoever. Hope this helps, good luck!
EDIT: nevermind what i said, i just logged into my router and remembered it wasnt the encryption type settings, but rather the wifi standard used, it used to be 802.11 b+n+g, and now i got it sitting at 802.11 b+g, which equals to 2.4 GHz. Meaning the razr has apparently a problem with the 5 GHz spectrum..
I too have a RAZRi which is connected by wi-fi at home to a Fritz!Box 7390. I noticed that when the RAZRi went into sleep mode with wi-fi connected (keep wi-fi on setting) it would have lost any internet connection on waking, requiring a disconnection/reconnection to reset. More annoyingly there was also a loss of connection (IP address) at laptops also connected to the router by w-fi on both 2.4GHz and 5GHz connections, which needed a reboot of either the PC or the router to re-establish a connection. The router GUI would show them all as remaining connected.
By using the manual setting on the router to restrict 2.4GHz connections to b+g (not b+g+n), it looks so far as though both problems are avoided, and the RAZRi can be set to use either the available 2.4GHz or 5GHz (a+n) connection on the Fritz! successfully without problems. EDIT big problem is though that disabling "n" on 2.4GHz seems to cause wi-fi throughputs to crash by more than 50% on both frequencies (which for me negates the benefit of having VDSL) - they recover if I re-enable, but then the lockups start if the phone is connected. A hobsons choice.
Thanks guys.

[Q] Switching between routers within the same wifi

Hey guys, I got a problem with wifi on my One. The thing is I got a couple of wifi routers in my house (one can't cover the entire building) and they're both broadcasting the same SSID, password etc. basically one is connected via RJ45 to the other and set up exactly the same way. Problem is when I move around the house and lose connection to one of my routers and the phone automatically connects to the other all my connections on the phone stop working and I have to turn my wifi off and on again. Same thing happens when I'm at my university, each floor has 2 wifi routers on it and phone tends to jump between them screwing up the internet connection each time. I know it might not be the biggest issue in the world but still it's quite annoying especially since my old SGS didn't have this problem. My phone is not branded and of course up to date. Thanks for any advice.
theleet said:
Hey guys, I got a problem with wifi on my One. The thing is I got a couple of wifi routers in my house (one can't cover the entire building) and they're both broadcasting the same SSID, password etc. basically one is connected via RJ45 to the other and set up exactly the same way. Problem is when I move around the house and lose connection to one of my routers and the phone automatically connects to the other all my connections on the phone stop working and I have to turn my wifi off and on again. Same thing happens when I'm at my university, each floor has 2 wifi routers on it and phone tends to jump between them screwing up the internet connection each time. I know it might not be the biggest issue in the world but still it's quite annoying especially since my old SGS didn't have this problem. My phone is not branded and of course up to date. Thanks for any advice.
Click to expand...
Click to collapse
From my experience after installing a lot of different wifi's in different operation modes, it all depends on how exactly the routers have been setup.
But to answer your initial question- the topic at hand; as long as the wifi's broadcasts the same SSID, you cannot choose which of the two individual routers you want to connect to. Please someone correct me if I'm wrong, but afaik this is not possible. If you want the possibility to choose, then set them up with different SSID's. This would be the _easiest_ solution, just make sure they broadcasts at different frequencies with at least 5 channels apart, i.e. channel 1 and 6, or 6 and 11, or 1 and 11. These are the most popular ones in the 2.4 GHz spectrum. If you use 5 GHz you have a lot more to choose from.
Now, if it's important that your network works seamlessly (with the same SSID), I can provide a step by step guide upon request.
But the solution to your current problem, from my experience; yes you have to turn the wifi off and then on again to "force" the wlan-card on your cell phone to -faster- connect to the closest router, otherwise it will take maybe 15-45 seconds before it does this automatically. It's basically the same with computers. This mostly happens if the wlan-card are within range of both networks, but it will try to stay connected to current one before changing.
And there are some important guidelines to follow when you connect one router to another if they are from the same brand (because of the ip-range and gateway). I once had to setup 8 wifi-routers in a house, because of the size and the thick concrete walls (same SSID)...
The problem is my laptops and other phones don't seem to have this problem, also the phone doesn't 'fix' itself after 40 or so secs it just stays broken as far as I've noticed forever (or at least till i leave my house). Also it doesn't have a problem connecting to the other router, it loses connection, looks for available networks, finds my other router, connects and... nothing works. Exact same thing at the university, finds routers, connects with 5/5 bars and it just doesn't work.
theleet said:
The problem is my laptops and other phones don't seem to have this problem, also the phone doesn't 'fix' itself after 40 or so secs it just stays broken as far as I've noticed forever (or at least till i leave my house). Also it doesn't have a problem connecting to the other router, it loses connection, looks for available networks, finds my other router, connects and... nothing works. Exact same thing at the university, finds routers, connects with 5/5 bars and it just doesn't work.
Click to expand...
Click to collapse
Are you sure you have it setup with DHCP and not some static ip-settings? Can you post some screenshots of your wifi-settings?
If you haven't tried already, get your phone to "forget" it's settings so you have to reenter the password and make sure it's set to DHCP. But first take out the power from both your routers so they get a reboot, and make sure the ethernetcable is connected from one of the LAN ports on the main router connected to the internet (from your cable/dsl/fiber-modem), and in to the WAN/Internet port on the secondary router. Btw what routers do you use as master and slave?
Yes of course I have the routers set up just like you say And yes I'm using DHCP on both of them. They are Airlive 1600GL with tomato rom as main and WR740N as secondary. I took screenshots of what seemed relevant sorry the main router's settings are not in English but it seems that would require me to reflash it with a different rom.
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-22-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-00.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Untitled.jpg
theleet said:
Yes of course I have the routers set up just like you say And yes I'm using DHCP on both of them. They are Airlive 1600GL with tomato rom as main and WR740N as secondary. I took screenshots of what seemed relevant sorry the main router's settings are not in English but it seems that would require me to reflash it with a different rom.
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-22-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-00.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Untitled.jpg
Click to expand...
Click to collapse
What's with the DNS being 8.8.8.8 and 8.8.4.4?
Seraphicus said:
What's with the DNS being 8.8.8.8 and 8.8.4.4?
Click to expand...
Click to collapse
These are Google DNS.
I would do it simple and solve it by changing the SSID on the slave router to something different, like wireless2, and change channel to 1. Or change the channel on the master router from 8 to 11. Your phone will probably change from one network to another faster this way, or it's at least easier for you to manually choose.
If that doesn't help, and the network is 100% problemfree for other wireless devices, I guess it must be a firmware or hardware problem with your One's wlan-card. Most likely firmware.
I will try it in the morning but still I'm pretty confident it's not the matter of setting up my home network but rather One's software bug. I can't say with 100% certainty right now but I don't remember having this issue before the update to the newest Android version.
Both routers need to be on the same subnet, enable dhcp server on one and disable it on the second one. Also set the second one as an access point only with a static ip in the same subnet.
The problem you have now is that wireless clients must negotiate a new ip when switching routers because of different subnets assigned to each.
Let me know if you need more details.
But still that would fix the problem at my home, what about when I'm somewhere else?
What ROM are you running? I leave wifi enabled all the time and haven't had any issues moving between networks, it automatically connects when another network is in range.
Android 4.3 with Sense 5.5 all stock not even rooted.
Since your completely stock it should just work. I'd try fixing the home network first and see if that solves the issue at home, then move on to trying to figure out the network issue at school.
Router1 - master
Internet connected to wan port
Cable from lan port to a lan port on router2
Dhcp: enabled with an ip range of 192.168.1.100 and up
Lan ip 192.168.1.1
Channel 1
Router2 - slave
Nothing connected to wan port
Cable from Router1 lan port to lan port on this router
Dhcp: disabled
Lan ip 192.168.1.2
Channel 11
Set ssid and wpa settings the same on both routers.
With this setup clients can hop from one access point to the other without a dhcp request or ip change, should switch within seconds.
cschmitt said:
Since your completely stock it should just work. I'd try fixing the home network first and see if that solves the issue at home, then move on to trying to figure out the network issue at school.
Router1 - master
Internet connected to wan port
Cable from lan port to a lan port on router2
Dhcp: enabled with an ip range of 192.168.1.100 and up
Lan ip 192.168.1.1
Channel 1
Router2 - slave
Nothing connected to wan port
Cable from Router1 lan port to lan port on this router
Dhcp: disabled
Lan ip 192.168.1.2
Channel 11
Set ssid and wpa settings the same on both routers.
With this setup clients can hop from one access point to the other without a dhcp request or ip change, should switch within seconds.
Click to expand...
Click to collapse
Tried that setup for many times over the years I've worked with routers, from my experience that is unstable.

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