Develop Bugs

WiFi Keeps Dropping/Disconnecting Through Second Router

First of all, I have internet from Time Warner Cable and it came with a router/modem all in one. Now that was initially set up and that works 100% perfectly with my SGS2. Since I have a weak WiFi signal upstairs in a couple of rooms, I decided to hook up an extra router that is set up as an access point. The second router is connected via a cat5e lan to lan to my main router (home is wired with cat5e connections).
Now on the second router, I have disabled DHCP since the main router is responsible for that. On the second router, I set up a different SSID first to test it out. All wired and wireless connections worked great through my laptop/Xbox 360, PS3. My SGS2 connected fine as well and worked.
Now the issue is that the SGS2 "drops" the WiFi after some time. Sometimes it happens after 5 minutes, sometimes 30 minutes, etc. Even with the SGS2 right next to the router it happens. Meanwhile, my laptop stays connected the whole time.
I can't seem to figure out what the issue is now. I've reset the second router a couple times and set it up all over fresh but it doesn't fix the problem. Seems to be a problem with my brother's Sensation as well. Is there something with Android and access points or going through a second router that causes issues? Any other settings I'm overlooking? SGS2 connected to the main router stays connected until I turn WiFi off. But to the access point, it drops out after some time.
FYI: Second router (access point) is running DD-WRT firmware.
If you need any other info, just ask. I'll be home from work in a couple hours. I've been messing with this for the last 2 weeks but nothing seems to work. Please help! Thanks.

Hmm thats very odd. Im running a similar setup as you, except my main and 2nd router connect via 5ghtz N.
Have you tried statically your phone with an IP address then modifying your main router (that gives DHCP) to reflect that IP is permanently assigned?
edit: to hard set your phone...settings-->wireless and network-->wifi settings, then menu key and advanced. Just fill in the IP and gateway info, and obviously use something in your DHCP subnet. You'll have to look at your DHCP subnet, but you'll probably use 255.255.255.224 as your mask, and use your gateway (your main router IP) as your DNS.

shorty87 said:
First of all, I have internet from Time Warner Cable and it came with a router/modem all in one. Now that was initially set up and that works 100% perfectly with my SGS2. Since I have a weak WiFi signal upstairs in a couple of rooms, I decided to hook up an extra router that is set up as an access point. The second router is connected via a cat5e lan to lan to my main router (home is wired with cat5e connections).
Now on the second router, I have disabled DHCP since the main router is responsible for that. On the second router, I set up a different SSID first to test it out. All wired and wireless connections worked great through my laptop/Xbox 360, PS3. My SGS2 connected fine as well and worked.
Now the issue is that the SGS2 "drops" the WiFi after some time. Sometimes it happens after 5 minutes, sometimes 30 minutes, etc. Even with the SGS2 right next to the router it happens. Meanwhile, my laptop stays connected the whole time.
I can't seem to figure out what the issue is now. I've reset the second router a couple times and set it up all over fresh but it doesn't fix the problem. Seems to be a problem with my brother's Sensation as well. Is there something with Android and access points or going through a second router that causes issues? Any other settings I'm overlooking? SGS2 connected to the main router stays connected until I turn WiFi off. But to the access point, it drops out after some time.
FYI: Second router (access point) is running DD-WRT firmware.
If you need any other info, just ask. I'll be home from work in a couple hours. I've been messing with this for the last 2 weeks but nothing seems to work. Please help! Thanks.
Click to expand...
Click to collapse
Try giving your phone a static IP from your main router. Also make sure that you adjust your phones wifi settings under advanced settings so that your phone stays connected to wifi during sleep. Hope that helps.
Sent from my SAMSUNG-SGH-T989 using XDA

blackangst said:
Hmm thats very odd. Im running a similar setup as you, except my main and 2nd router connect via 5ghtz N.
Have you tried statically your phone with an IP address then modifying your main router (that gives DHCP) to reflect that IP is permanently assigned?
edit: to hard set your phone...settings-->wireless and network-->wifi settings, then menu key and advanced. Just fill in the IP and gateway info, and obviously use something in your DHCP subnet. You'll have to look at your DHCP subnet, but you'll probably use 255.255.255.224 as your mask, and use your gateway (your main router IP) as your DNS.
Click to expand...
Click to collapse
Well my phone is getting the same IP address each time, whether I connect to the main router's SSID or the second router's SSID. But I will try this static IP. One problem is that I don't know how to find out my DHCP range. There's nothing in the main router's settings about the range. The second router has an option to set the IP address range for DHCP but the main router doesn't. See attached image.
I'll try to set the static IP around what the IP addresses of other devices on the network are since I don't know the exact range. Let me know if I'm doing this wrong. Not sure what you meant by 255.255.255.224 there.

The static IP didn't make a difference. Still keeps disconnecting/dropping after some time. Meanwhile, the connection with the main router stays connected. Don't know what else I can do. Seems that my HP Touchpad running CM9 stays connected to the second router without dropping. Don't know what's different about that from my phone.
Sent from my SGH-T989 using XDA

Does anybody have some instructions on how to set up the second router as an access point? I'm pretty sure I set it up correctly but apparently there seem to be some issues. People who have a similar setup that can help would be great.
Main router from cable company with built in modem where internet connectivity comes from is downstairs. Connect cat5e from LAN of main router to LAN of second router upstairs. Second router set up as access point for better WiFi coverage upstairs.
2 options for second router: DD-WRT D-Link DIR-615 or D-Link DIR-625.
"Could" buy some other recommended router for this and try that if needed, but would definitely prefer to use what I have and get this to work.

This might be completely off but I had a similar issue with my SII when connecting to 802.1x networks at my University. I downloaded this app called wifi fixer and it resolved the wifi connection drop for about 90% of the time. Give it a shot, it might do wonders for ya.

iLeopard said:
This might be completely off but I had a similar issue with my SII when connecting to 802.1x networks at my University. I downloaded this app called wifi fixer and it resolved the wifi connection drop for about 90% of the time. Give it a shot, it might do wonders for ya.
Click to expand...
Click to collapse
I tried it and it didn't work. I think it's something to do with DHCP or some other settings.
Sent from my SGH-T989 using XDA

shorty87 said:
Does anybody have some instructions on how to set up the second router as an access point? I'm pretty sure I set it up correctly but apparently there seem to be some issues. People who have a similar setup that can help would be great.
Main router from cable company with built in modem where internet connectivity comes from is downstairs. Connect cat5e from LAN of main router to LAN of second router upstairs. Second router set up as access point for better WiFi coverage upstairs.
2 options for second router: DD-WRT D-Link DIR-615 or D-Link DIR-625.
"Could" buy some other recommended router for this and try that if needed, but would definitely prefer to use what I have and get this to work.
Click to expand...
Click to collapse
First you need to find out if your router is supported. According to the DD-WRT database, the 615 is, the 625 is not. But there are several revisions of that router, so you need to find out what revision you have. It should be on your label.
Router database
Then you need to decide whether you want a repeater, an access point, or client bridged. You can read the differences in the DD-WRT wiki found HERE
Then you need to find the best build to flash to your router. I suggest reading the overview of the 615 found HERE. Read the ENTIRE thread. If you flash the wrong version to your router, you WILL brick it.
Then flash the appropriate firmware, set it up, and youre done. Youre going to have to do some reading.
edit: I would also suggest downloading wifi analyzer on your phone and do a site survey of available channels in your house. Most likely you WILL have interference from neighbors. Youre going to want to hard set your channel to the least congested channel, either 1, 6, or 11. Once you get DD-WRT set up on your 615 you can do a site survey within the router as well.

change the channel on your router to 6 not 11 i had that issue with our second router and actually my nook color. Depending on the router it should be under wireless settings.

RaverX3X said:
change the channel on your router to 6 not 11 i had that issue with our second router and actually my nook color. Depending on the router it should be under wireless settings.
Click to expand...
Click to collapse
The only reason to use one over the other is congestion. Thats it. And you want to use 1, 6, or 11 because the DIR615 has N capability, and you need a wifi primary channel to use N. Theres only 3 primary channels...1, 6, and 11.
edit: Heres a technical overview of N: CLICK ME!

blackangst said:
First you need to find out if your router is supported. According to the DD-WRT database, the 615 is, the 625 is not. But there are several revisions of that router, so you need to find out what revision you have. It should be on your label.
Router database
Then you need to decide whether you want a repeater, an access point, or client bridged. You can read the differences in the DD-WRT wiki found HERE
Then you need to find the best build to flash to your router. I suggest reading the overview of the 615 found HERE. Read the ENTIRE thread. If you flash the wrong version to your router, you WILL brick it.
Then flash the appropriate firmware, set it up, and youre done. Youre going to have to do some reading.
edit: I would also suggest downloading wifi analyzer on your phone and do a site survey of available channels in your house. Most likely you WILL have interference from neighbors. Youre going to want to hard set your channel to the least congested channel, either 1, 6, or 11. Once you get DD-WRT set up on your 615 you can do a site survey within the router as well.
Click to expand...
Click to collapse
I have actually done all that. The DIR-615 is an E1 version and I flashed the correct DD-WRT firmware on it. I followed a tutorial from the DD-WRT website to set it up as an access point as well. My laptop works perfectly with it. Just my phone keeps dropping the connection from it. My main router is on channel 11 and the second router is on channel 6. I also tried channel 1 but it didn't help.
I might just to try set it up as a second router on a different subnet than the first router and see if that helps. Going to try to follow this Youtube video and see how it goes.

shorty87 said:
I have actually done all that. The DIR-615 is an E1 version and I flashed the correct DD-WRT firmware on it. I followed a tutorial from the DD-WRT website to set it up as an access point as well. My laptop works perfectly with it. Just my phone keeps dropping the connection from it. My main router is on channel 11 and the second router is on channel 6. I also tried channel 1 but it didn't help.
I might just to try set it up as a second router on a different subnet than the first router and see if that helps. Going to try to follow this Youtube video and see how it goes.
Click to expand...
Click to collapse
Hhmm ok. Well your main router shouldn't have anything to do with it. When it drops does it re-aquire an IP and reconnect? Honestly if a reboot of the router doesn't fix it and your laptop doesn't have the same issue, its pointing to the phone.
Maybe a factory reset?
Sent from my SGH-T989 using XDA

blackangst said:
Hhmm ok. Well your main router shouldn't have anything to do with it. When it drops does it re-aquire an IP and reconnect? Honestly if a reboot of the router doesn't fix it and your laptop doesn't have the same issue, its pointing to the phone.
Maybe a factory reset?
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
It reconnects when I unlock the phone. Sometimes I have to reset the Wifi on the phone. Have set the Wifi connection to never sleep. My brother's Sensation was doing this as well. I'll have to test it out on his phone and see. I'll probably reset my phone later today and see if that works.
Sent from my SGH-T989 using XDA

wifi connection problems (not antenna fault or powersave on wifi)

Hi folks.
Trying to get to the bottom of wifi issues to do with One X and my router. Ive puzzled over this for a while but no clues yet.
Got a dd-wrt flashed Linksys WRT610N v2 with the latest firmware. Its a dual channel mimo 802.11n device.
Router is set up as DHCP forwarder to a ClearOS home server handling all the DHCP, WINS, web access etc. duties.
Everything else communicates with router fine, except one netbook that has to be set to use TKIP, but I think thats limitations of the netbook Intel wifi card or its drivers.
The phone will set up a wifi connection with 610N, show very strong signal but almost never manages any data traffic. The phone will communicate with other routers just fine.
Channels are set same SSID, one 20mhz and low band fixed channel other 40mhz and high band auto channel, WPA2-Personal PSK is the encryption type using eithe AES or TKIP (unsure which the phone selects). The 20mhz channel needs fixed channel id because its working as a client bridge with another wifi router in the house for the TV box. That router is a DLink DIR-615 also flashed dd-wrt, same SSID 802.11n single channel mimo router also using same encryption and wifi security. Essentially all routers and channels function as parts of same wifi network.
Im hoping someone knows of a specific limitation the phone has that can be worked around, or indeed can offer some insights into known problems with the One X wifi capabilities.

I found the solution to this, so I thought Id return and respond seeing as no one else could, just in case it helps a future reader.
The problem turned out to be the particular release of the dd-wrt firmware, I am not clear unfortunately on what aspect.
I obtained my wrt-610n V2 soon after it was released for sale in Singapore. At the time I flashed the most current dd-wrt firmware available and left it at that, firmware dated october 2010 iirc.
The procedure is first a special flash image then you can flash one of the broadcom specific 2.6 kernel generic releases(vitally important to only use 2.6 kernel on V2 models).The dd-wrt database still lists that early firmware from its reference page. However, if you go to the ftp site regular and recent generic builds are available.
I used the very latest generic build compatible with the 610n hardware (preserving settings so i didnt even have to reset and reconfig), since doing that my One X has been completely stable and performs well on the wifi connection. One wrt-610n radio set 20mhz low fixed channel other radio set 40ghz upper auto channel.
Problem completely solved.
For good measure I flashed up my two Dlink DIR-615 routers to the latest dd-wrt build and they now perform noticeably quicker and better on wifi connections. One of them spends its life as a travel router the other as a wireless bridge to the low channel radio on the 610n to remotely wifi link some AV gear on my network.
So the generalistic "keep firmwares up to date" certainly applies with these routers.
As an aside the Dlink DIR-615 has got to be one of the cheapest 802.11n routers out there thats full dd-wrt flashable, nothing fancy but they can be found in vast numbers on ebay for just a few quid

[Q] Wifi extender with my S3

Hey all. So heres my deal. I have a Linksys E3000 router and an Edimax Wireless Extender I just picked up. I got this since in my house, the router is on one side of the house and so naturally, on the other side, I get 1 bar of wifi strength. Was hoping to improve that. So what I wanted to do was have both units have the same SSID and have the devices automatically switch between the physical devices (same SSID) as I get near them. This didnt work. In fact, both my S3 and my Nexus 7 kept getting confused and dropped connections often.
So now Im trying it where they have different SSIDs (lets say Router1 and Router2) so no conflicts. The issue I have is this. I want both my S3 and N7 to AUTO SWITCH to the better signal SSID. Im running Cyanogenmod 10.1 on both devices and I see in the adv wifi settings something about, 'Only connect to a network where strength is GOOD'. This seemed to be the answer, however it doesnt actually work. 1 network shows great and other shows fair and it still wont switch.
Wondering if there is any other way around this? Otherwise this extender is basically useless to me as I dont feel like constantly switching my wifi networks as I walk across the house. (wow I sound spoil when I say it like that lol)
Thanks all

Is it configured for Universal Repeater Mode?

When you say "it" are you referring to my router or the extender device?
The router BTW is a Linksys e3000 with dd-wrt and the other unit is edimax 7348rpn. I believe that's the right model. Its a little plugin unit. Thanks

RoachForLife said:
When you say "it" are you referring to my router or the extender device?
The router BTW is a Linksys e3000 with dd-wrt and the other unit is edimax 7348rpn. I believe that's the right model. Its a little plugin unit. Thanks
Click to expand...
Click to collapse
From the Edimax site:
Complies with the IEEE 802.11b/g and IEEE802.11n standards.
Supports 2.400~2.4835GHz frequency band.
High data rate up to 300Mbps network speed.
Auto rate fallback in case of obstacles or interferences.
Supports point-to-point and point-to-multi point bridge function.
Supports WDS (Wireless Distributed System) repeater mode.
Supports Universal Repeater mode.
Supports AP Client mode.
Supports four sets of ESSID to group the different wireless networks.
Supports roaming link integrity.
Provides 64/128 bit key length WEP data encryption.
Supports WPA, WPA2 security enhanced function (pre-shared key, 802.1x, TKIP, AES …).
Supports WPS (Wi-Fi Protected Setup) function.
Provides MAC access control.
Provides hidden SSID function.
Supports Web-based configuration.
Firmware upgradeable via Web browser.
So it can be configured into different modes. Make sure you have it configured for Universal Repeater Mode

[Q] Note 8.0 weird WiFI problem...

Hello,
I recently purchased the Note 8.0 and I'm experiencing a weird problem with the internet connection. I can connect to my wireless network, I can access other devices on the LAN, but I cannot access the Internet or ping the gateway (I can however ping other hosts on the LAN). I know it's not the tablet as I've tried it at work and I also tried running my S4 as a hot-spot and internet works as it should. The S4 works without a problem on my wireless at home as do a few laptops.
At this point, I'd say, it is obvious that it's something with my cable modem/router, but if possible I'd like to figure out what the problem is.
I found a post somewhere that had a similar problem, where the device in question was receiving the wrong MAC for the gateway, but this is not the case here as my tablet does not even receive a MAC for the gateway.
Output from the tablet:
android:/ $ ip neigh
<some IPv6 address> dev wlan0 lladdr <Gateway MAC> router STALE
192.168.0.1(gateway) dev wlan0 FAILED
192.168.0.5 dev wlan0 lladdr <Server MAC> reachable
Output from the S4:
android:/ $ ip neigh
<same IPv6 as above> dev wlan0 lladdr <Gatewawy MAC> router STALE
192.168.0.1 dev wlan0 lladdr <Gatweay MAC> reachable
192.168.0.5 dev wlan0 lladdr <Server MAC> reachable
I've tried resetting the modem back to factory defaults, removing/changing encryption type. I did not wipe the tablet as I've had the issue from day 1.
The only way I'm able to get the tablet to sort of connect to the internet is to assign a static IP to it, however that only works for a few mins and is very intermittent.
Does anyone have any suggestions? Any way to figure out why the tablet won't get the MAC for the gateway?
My cable modem/router is an Arris DG860, but unfortunately, there's very little info on it and I couldn't find a firmware upgrade for it. What's also interesting is that the tablet does not show up in the DHCP client list of the modem, however it gets an IP, connects and communicates with other hosts.
Thank you for your help

What IP is the Note 8 ending up with? If somehow it is outside the range of what it should be I would wonder if it is just giving itself an IP when it fails to receive one from the DHCP server (ie, your router). I know that Windows computers will do that as a fallback.
Can you check your router to see if perhaps the DHCP pool is too small? If that were the problem then it might not be allocating another IP because there aren't any left (based on it's current config). In which case you can just make the number of allowable IPs to be larger.
There may be other possibilities too. The above are just what is coming to mind at the moment.

It is a valid IP as I have access to other devices on the network, but to answer your question it gets 192.168.0.13 with a mask of 255.255.255.0. I wanted to try forcing the private network to work on IPv6, but haven't been able to figure it out yet.
The tablet gets the right MAC for the server and communicates with it, which leads me to believe that the router (gateway) isn't responding to ARP requests from the Note. I have some access to the router's CLI but it's not very helpful and I have no idea how to troubleshoot it on the Note..

finaldude said:
It is a valid IP as I have access to other devices on the network, but to answer your question it gets 192.168.0.13 with a mask of 255.255.255.0. I wanted to try forcing the private network to work on IPv6, but haven't been able to figure it out yet.
The tablet gets the right MAC for the server and communicates with it, which leads me to believe that the router (gateway) isn't responding to ARP requests from the Note. I have some access to the router's CLI but it's not very helpful and I have no idea how to troubleshoot it on the Note..
Click to expand...
Click to collapse
That is bizarre. Can you ping the gateway from other devices on the network? Can other devices on the network ping or otherwise see or access the Note 8? It seems like the Note 8 doesn't exist to the gateway, and so I'm wondering if it also doesn't exist to anything else on the network. It is possible (though I'm just guessing here) that the Note 8 is giving itself an IP address that it determines as being appropriate based on the other devices it can see. Given that it doesn't show up in the DHCP table on the gateway I can't really see how it is getting an IP unless it is assigning it to itself. Another thought is to check the IP addresses of all the other devices currently on the network in case somehow you're having an IP address conflict (ie, two separate devices ending up with the same IP somehow, which can happen temporarily in the case of a device having an IP and then being hibernated, during which another device is given the same IP, and then later the first device is resumed from hibernation).
If you don't receive much further help here on the XDA forums I'd suggest starting a thread over on the SmallNetBuilder Forums as there's lots of knowledgeable folks there that can help with networking things like this.
As for me, I've got to sign off for the night. Best wishes to you as you troubleshoot!

Hi and thanks for the reply.
Yes the gateway is pingable from other devices, so is the Note. I also tried changing the 192.168.0.xxx to 10.10.0.xxx with no luck. The Note received the 10. from the DHCP server, but the gateway still would not respond.
I think it might have something to do with the routing on the modem, the hosts on the network can communicate at layer 2 (no routing need) while everything on the outside needs to be router. Still does not explain why the gateway doesn't respond to the Note though...

Have you done a traceroute to another local device to see the path its taking?
You will need to have root and I think busybox. You will also need to su before doing traceroute... maybe there is an app that can a trace if your not rooted!
Sent from my GT-N5110 using Tapatalk HD
---------- Post added at 08:42 PM ---------- Previous post was at 08:35 PM ----------
What is your network diagram with models
(I.e note 8 > router(wrt54g) > cable modem)...
Sent from my GT-N5110 using Tapatalk HD

I am not able to run traceroute from the tablet, I tried it from my desktop and it completed, but never hit the gateway - it went right to the host.
the network model is
note8--->all-in-one-wireless cable modem

finaldude said:
I am not able to run traceroute from the tablet, I tried it from my desktop and it completed, but never hit the gateway - it went right to the host.
the network model is
note8--->all-in-one-wireless cable modem
Click to expand...
Click to collapse
Is the router still left with it's default settings? Also, Is there a page in the router/modem's web gui for DHCP and if so, what are those settings? It sounds to me like the DHCP is failing to pass along the external GW and/or DNS servers. To test a theory, are you able to ping 8.8.8.8?

I wonder if this was solved? I'm having the exact same problem minus all the technical knowledge. Tech support at time Warner seem like they are reading a script. Has anyone found a fix or workaround for this modem? My note works everywhere but home

I might have narrowed down the issue...
On technical support last night it was resolved that the Note was looking for IP version 6 ip and the time warner box only outputs IP version 4...
Is there a way to have the note look for IP version 4??? I know nothing about this but I guess over this next year we are supposed to be switching to IP version 6?

I unpacked my note 8 yesterday and I experience an issue when connected to wifi. When I tried to download something from play store it taked too times and usually downloads remained blocked at 70/90% and this didn't happen in 3G. So I tried a factory reset and now all thing works great you could try..
Tapatalk on Samsung Galaxy Note 8.0 3G

mouse100 said:
I unpacked my note 8 yesterday and I experience an issue when connected to wifi. When I tried to download something from play store it taked too times and usually downloads remained blocked at 70/90% and this didn't happen in 3G. So I tried a factory reset and now all thing works great you could try..
Tapatalk on Samsung Galaxy Note 8.0 3G
Click to expand...
Click to collapse
Factory reset doesnt do it for me.
My wifi works everywhere but at home using Time Warner on the Arris DG860 modem. I think the OP and my problem are because of a combo of these factors.
I believe it has to do with the IP change that is taking place this year.
If you look up online it seems to be kind of a big change. You can type ... time warner ip version 6... into google and see a link that explains it. I cant link for some reason.
I wish someone could confirm this, but does the note 8 only accept IP version 6? Time Warner will only deliver version 4 to me right now through this modem, and the tablet is making a version 6 IP.
Atleast thats where ive made it so far.

I can confirm that I have the same problem at my In-Laws house. Arris router, and Charter network in Louisville. Likely the same as Time Warner folks.
But I think the Arris router is the more likely culprit. I didnt feel comfortable asking the FIL to let me kack around in his router :laugh:

I have the same problem on my main wifi at the house. It's a 2.4/5 ghz setup. My guest wifi is just normal 2.4 different router etc. I'm going to need to look into this at length as this just isn't going to do. Also as far as IP6 is concerned we won't see that roll out Internet wise for at least another 2 years fully. When it does go full steam all of the IP4 routers APs will have to be either replaced or firmware upgraded if the internal radios will even support IP6. Most likely 70% won't and that's the reason you don't see a lot of IP6 routers etc. We have them on the enterprise side but most are not in use. I will report back when I have anything useful.
Casperi
Sent from my GT-N5110 using xda premium
---------- Post added at 11:54 AM ---------- Previous post was at 10:57 AM ----------
OK figured it out and it includes a bit of funny.
I went through my network setup and forgot that I had
MAC filtering on so I added the Note along with a face palm thinking
That was it, couldn't have been that easy right... No it wasn't but good
News.
The note 8 doesn't like the 20/40 "channel width" or some routers call it "wideband" in the routers or in my case access points. Turn that to 20 only and boom there you go. Wifi
Works perfect. You will find it typically under advanced settings.
Casperi
Sent from my GT-N5110 using xda premium

sweeptheleg said:
I might have narrowed down the issue...
On technical support last night it was resolved that the Note was looking for IP version 6 ip and the time warner box only outputs IP version 4...
Is there a way to have the note look for IP version 4??? I know nothing about this but I guess over this next year we are supposed to be switching to IP version 6?
Click to expand...
Click to collapse
The Note 8 supports both 4 and 6. The issues described sound a lot like config issues on the modem or router. as stated before, sounds like an issue with the DHCP server (the thing that provides ips to the devices.)
Sent from my GT-N5110 using Tapatalk 4 Beta

Hmmm I have an ipad, note 2, ps3, laptop, gfs iphone all connecting just fine... hours and hours of tech support, and the best answer is incompatability. For some reason the note is only creating ip6 my isp only does 4. I understand the note is capabale of both, but in this specific instance there is a bug in the note with this router.
nothing to do with settings. If every other device I own connects without hassle then someone needs to fix the note 8. Christ my note 2 connects....
there were no options untouched by highest level tech person fromisp... its the note 8

Arris DG860 and Note 8 *Workaround*
Ok, just got done trouble shooting a customers Note 8 on working behind one of our DG860 modem/routers, what I was seeing was the Note 8 was showing up with an IPv6 address even if I had the IPv6 DHCP turned off. What I found works is if you go into LAN > DHCP on the DG860 and create a "Fixed DHCP Client" using the Notes MAC address and some address in the IPv4 range like 192.168.0.X it will force it to pull that instead of the IPv6 address and work. Hope this helps anyone running into this weird combination.

At wits end
I been having nothing but issues connecting my wifi only note 8 to the internet at my house. Everywhere else it works fine but at home nothing but issues and all other devices are connecting with no problems. I have tried it with a netgear router, and now a arris gateway and still cannot connect. The cable tech came out by chance and was checking my connections and could not figure out why it would not connect either. I have time warner if that makes a difference which I am starting to wonder it does seeing how I can connect everywhere else and have tried two different ways to connect at home.
Update: So after being on the phone with time warner, samsung, and live chat with Arris this is just one hot mess. Samsung is stating that there seems to be firmware issues with arris gateways which I have noticed many people posting problems with their arris products, and their resolution was to roll back the software. Time Warner is stating that they cannot roll back the software on the modems and was trying to blame it on my tablet, though it was working before I setup the gateway and it works on other routers even on a piece of crap belkin that likes to kick off everything it worked on that with no issues. Arris told me that they have no control over the software only the cable companies do, so in typical fashion a lot of passing the buck and finger pointing. I am just irate at the moment for I do not have a working tablet at home. Part of me thinks it is the android 4.2.2 as well, for I had 4.2.2 on my droid razr hd and had numerous wifi issues with it.
Update 2: After doing some more research I have found there seems to be a issue with the wifi card and the chipset with arris gateways so there is a compatibility issue with the card. I had my netgear hooked up to it before and didn't have issues so I am going to just use my netgear and run the gateway in bridge mode it should fix the issue.

HELP! Wifi 5GHz conected without internet

Hi!!
I just bought a new tab s4, and I can not connect it to the 5ghz wifi network. It connects, but says connected without internet. The 2.4GHz network connects perfectly.
PS. Sorry for my English.

Same issue.
My tablet is TIM branded.

Same issue, it connects on 2.4ghz but not on 5ghz...
Anyone?

HI peep's mine is connected to 5 GHz and it’s working flawlessly, it’s showing a connected speed of 866MBPS!
Quick questions, did you try a reboot router and Tab S4 once connected to 5GHZ ?
Also are you using separate WPA2 PSK key ?
As some routers can’t handle separate keys, keep the Wi-Fi key same for both channels i.e 2.4GHZ and 5GHZ!

Does it get ip address from the router/dhcp server you have?

I don't have access to a 5Ghz wifi right now. Next week I'll try the tablet and I'll try everything you said. If the new tablet has the same problem of course, I hope it goes well.

speed_boy said:
Does it get ip address from the router/dhcp server you have?
Click to expand...
Click to collapse
See below and bands i have Separate bands!
Galaxy-Tab-S4
dual stack
Galaxy-Tab-S4
device info type 5 GHz
IP address: 000.000.0000 (DHCP)
MAC address: 77:EE:00:FFD:00

I have the same problem and I noticed that it came with the Anroid Pie update! 2,4G is working fine in my S4.
I have another tablet Samsung Galaxy Note 10.1 2014 edition and 5G Wifi is working flawlessly.
Might it be software issue in Android 9?
My basebandversion is T835XXU3BSF4, kernel 4.4.153-16124683 #2 Fri Jun 14 2019.

My Tab S4 was ,finally, updated to Android 9. 5GHz working fine. Both 5GHz and 2.4GHz working fine...
All good here...

I got one coming in the mail and will report back on my success but if you don't get internet trying setting your dns manually to Google's public one for testing. 8.8.8.8 Could also be related to the channel the router is using for 5ghz.
Malcolm

Okay, so I got a new tab s4, and I have the same problem. At the second floor of my house, I don't connect to the 5Ghz wifi. I have separated bands. I tried changing the channel... I don't know what else try.

InsertCoin_Pls said:
Okay, so I got a new tab s4, and I have the same problem. At the second floor of my house, I don't connect to the 5Ghz wifi. I have separated bands. I tried changing the channel... I don't know what else try.
Click to expand...
Click to collapse
5GHz WiFi has less range than 2.4GHz, maybe the signal strength is not enough at the second level. Use the lowest frequency band available, move the base unit to a place less obstructed etc. This does not sound like a device issue.

1eStar said:
5GHz WiFi has less range than 2.4GHz, maybe the signal strength is not enough at the second level. Use the lowest frequency band available, move the base unit to a place less obstructed etc. This does not sound like a device issue.
Click to expand...
Click to collapse
Yeah, I know, the device issue is that all my other phones, computers and devices are able to connect to the wifi. I enabled the smart wifi and it looks like it's going better, the tablet is able to get better download speed.