Wifi connection loss - Galaxy Tab S Q&A, Help & Troubleshooting

Hello, I've a problem with my Galaxy Tab S 8.4 Wifi.
Every now and then (usually 1h) my wifi disconnects from the wifi network and reconnects after about 30 seconds. I had the very same problem with my Nexus 7 2013 and I solved that problem by setting the frequency to 2.4 GHz only.
I tried to do the same with the Samsung tablet but the option is not present under Wi-Fi> advanced.
There's a way to do the same with the samsung tablet?
I'm on KitKat.. Lollipop will bring back that option?
Note:
- the tablet is NOT rooted
- I've no power on the router because I live in university's campus accommodations
- I saw in another post that this app might help: https://play.google.com/store/apps/details?id=com.brilliapps.wifiandmorefixer&hl=en I would like to not use an app that doesn't explain how it does that kind of things (I use my tablet for work and I've some private data on it)

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connect to internet

Hi
for connecting to internet I must use wifipppoe app.this app works on my galaxy ace perfectly but doesn't work on note 8 (n5100)(4.1 and 4.4)
I tried other apps but didn't solve my problem.
h.eftekhar.m said:
Hi
for connecting to internet I must use wifi pppoe app.this app works on my galaxy ace perfectly but doesn't work on note 8 (n5100)(4.1 and 4.4)
I tried other apps but didn't solve my problem.
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Is this with all Wifi connex or just at home?
If it is a home issue, there are a few tricks that can be done to your Wifi router or extender.
I had posted a good deal of info in the Note 8.0 General section about home Wifi connex issues with the Note 8.0.
I suggest using Insider 2.0 to scan your area for Wifi connection points. Identify your network and take note if your connex has any drops (the graph should stay stable within .5 db on its peaks. Mine did not until I corrected the issue with its setup. In fact most all home wifi connection points around me are very unstable, mostly do to the same reason and their channels are too close to each other as well.
You can search for my threads.
Hope it works for you, as there has not been a single instance of hot spot connections yet that I have needed to use a 3rd party app for wifi connectivity, once I properly setup my router at home.
I was going to use an app to allow hidden SID connectivity, but I realized my router sends extra packets, which can slow max speeds and the hidden SID is easily sniffed by hackers. So I did not bother keeping hidden SID on my network.

Intermittent WiFi Dropouts?

I got a Tab S 10.5 a few weeks ago as a replacement for my Nexus 10. Overall, I feel like the Tab S is head and shoulders above the Nexus - but I've had some strange issues. I've had the wifi signal intermittently stop responding - it seems to be more prevalent on my 5GHz network using 802.11ac speeds but I've experienced it at standard 2.4GHz connections as well.
I haven't rooted the tablet yet. I thought at first it might be my wireless network as I hadn't used any other devices that were 'ac' capable even though I have a pair of Netgear R6300V2 routers bridged across my home. However, these wifi signal dropouts persist only on the Tab S - if I turn wifi off, then back on, connectivity is restored. My Galaxy S4, Chromecast, PC, DVR, all stay online just fine.
Has anyone else had this issue? I got my Tab S with the Samsung Book Cover - which I love, but it almost seems like it happens when I hold the Tab a certain way.
Thanks for anyone who can give any feedback.
Sent from my SM-T800
Did you connect your Tab S with your S4 through SideSync at one point?
Yes, I have used Sidesync. I disabled remote notifications, but occasionally still get a pop-up that remote notifications are enabled even if I haven't used sidesync in days.
Sent from my SM-T800
I too suffered wifi drop-out and Bluetooth issues. Following this thread (http://forum.xda-developers.com/galaxy-tab-s/general/heads-sidesync-bt-wi-fi-bug-t2828911) I realized that there is a problem with SideSync. Even when not connected it sitll tries to communicate with the tablet and affects the wireless components. I removed Sidesync from my Note II and clear the data from SideSync on the tablet and for the past week I have not ahd any issue with Wifi or Bluetooth.
Thanks. Side Sync Sux.
Brilliant. Thanks. I was having a big problem with 2.4ghz wifi. I though there must have been some interference. 5g was fine. Tried chaining channel and all sorts. Would have thought it was my router but I have two with same prob just on 2.4ghz. It was happening to my phone and tablet, but then noticed only when the table was connected to wifi. Just disabled Side Sync and now the wifi is blazing.

[Q] Tab S 10.5 not reconnecting to hidden WiFi access points

I was setting up a new Tab S 10.5 on a relatives network. The access point (router) is not set to broadcast. Of course the first time I wanted to connect I made the router visible and then the Tabs S connect per usual. After that I change the router back to invisible (no broadcasting). I fully expected the tablet to automatically reconnect with the router but that did not happen. I toggled the tablet's WiFi but I could only reconnect after I made the router visible again.
My relatives laptop has no problem connected to WiFi even when the router is not broadcasting. Its likely that some other tablet setting has been turned off. This is a relatives tablet and network so I can't experiment. On the tablet I'd turn off automatic WiFi scanning to save battery. Could that be the culprit?
Basically I'm asking if this is a Tab S issue that other owners have experienced?
Sent from my Nexus 10 using XDA Premium HD app
Try using either 2.4 or 5 GHz channels with standard b, g, n etc.
Also try the same connected to a different brand of router.
UpInTheAir said:
Try using either 2.4 or 5 GHz channels with standard b, g, n etc.
Also try the same connected to a different brand of router.
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Thanks for your suggestions.
Sent from my Nexus 10 using XDA Premium HD app

Unable to detect wifi network...!!!

I am using D-Link 2750U ADSL router, the issue I am facing is quite weird. My Phone, Laptop, Nexus 7 Tab can see Wi-Fi Network in range but Samsung Galaxy Tab 3 (10.1) cannot see Wi-Fi network. I tried connecting it manually by providing SSID, it says Network not in range. Interestingly, Samsung tab connects to Wi-Fi network in my office without any issues. So I am clueless as to where the problem is – is it with Router or Tab? Can someone help please
heeemz said:
I am using D-Link 2750U ADSL router, the issue I am facing is quite weird. My Phone, Laptop, Nexus 7 Tab can see Wi-Fi Network in range but Samsung Galaxy Tab 3 (10.1) cannot see Wi-Fi network. I tried connecting it manually by providing SSID, it says Network not in range. Interestingly, Samsung tab connects to Wi-Fi network in my office without any issues. So I am clueless as to where the problem is – is it with Router or Tab? Can someone help please
Click to expand...
Click to collapse
crash your router, try again
access your router, check your settings,history
try unsecuring your wifi, seemif it picks up, then resecure
tab does 80211 abgn, check you're setmfor wpa2-passkey
in your tab if always scan is enabled, toggle it
check system/etc/wifi/nvram* - if present
it's most likely the router and the tab.
Issue resolved (hopefully) by setting channel to fixed number rather than using auto option in router wifi settings.
Interesting aspect is my phone, which is also samsung (s4) and laptop had no issues.
@heeemz
channel!, Uhhh, weird,
My best guess is that you have a router with Full open channels like for Europe or Japan and that the TAB3 is an American version. So as American Wifi is not allowed to transmit on EU/Japan extended frequencies?
r2d23cpo said:
@heeemz
channel!, Uhhh, weird,
My best guess is that you have a router with Full open channels like for Europe or Japan and that the TAB3 is an American version. So as American Wifi is not allowed to transmit on EU/Japan extended frequencies?
Click to expand...
Click to collapse
This looks like best possibility...
Sent from my GT-P5210 using XDA Free mobile app
I have ATT 7 inch and it has similar issues on my home wifi... also a dlink router... I have 3 cellphones, wifi tv and 2 other tablets on the wifi and no issues.
I will check my channels.

Galaxy Note 10 Plus - Slow Wi-Fi download speeds

I have Samsung Note 10 Plus , it shows wi-fi 6 logo when connected to Asus Wifi-6 router AX88U. Sometimes, when I leave my home and come back, the Note 10 plus does connect to AX88U wifi-6 but the speed is slow (about 50 mbps on 200mbps connection). If I turn off wifi on my phone and turn it back again. I get blazing fast 226 mbps. I did check some forums and was advised to change phone wifi setting is to static IP with primary DNS to 8.8.8.8 and secondary dns as 8.8.4.4 but this does not help.
Other steps taken: I disabled Wifi-6 on my router, but issue does not go away even when wifi ac (5Ghz) is being used.
Also, I have done "forget" network on phone, restart phone, reprogram Wifi setting. No use...
Another interesting fact: I have connected Netgear R7900 (wifi ac only, Mu-mimo) in AP mode to AX88U via cat7 cable. One day, I had observed that as I entered my home, my phone had connected to the Netgear router and the download speed was 200mbps with ping of 8 milliseconds. While I was roaming in the home, I was simultaneously browsing a few websites on my phone, and I observed the phone went from Netgear to ASUS router because I could see Wi-Fi logo without the Wi-Fi 6 symbol and then as soon as it hooked to Asus, I could see Wi-Fi logo with Wi-Fi 6 symbol. All of a sudden, the download speed as tested on speed test app went down from 200 Mbps to 6 Mbps. I switched off the Wi-Fi of my phone and switched it back again. the phone then connected with ASUS router on Wi-Fi 6 and the download speed was 200mbps. So this means that my phone performs very poorly when first-time re-connected to ASUS router. Would this be an issue with my phone not receiving signals properly - because of some issue while acting like a wifi-6 client?
Can someone please advise me how to have my phone connect to router with full internet speed? This only happens if I go out of home and come back in AX88U signal range. Also is this a router issue or phone issue? All other devices in my home are wireless ac (Wifi 5) only and have no issues with Asus router. Asus customer support is pointing finger on the Note 10 plus. Please help!
From what you've described here I would say the issue lies with the assus router. Since the netgear works fine.
On reconnect maybe it's not recognizing the phone properly. When it reconnects to your phone with slow speeds have you checked the router's connected device map? (shows what devices are connected to it) does it recognize properly?
lennie said:
From what you've described here I would say the issue lies with the assus router. Since the netgear works fine.
On reconnect maybe it's not recognizing the phone properly. When it reconnects to your phone with slow speeds have you checked the router's connected device map? (shows what devices are connected to it) does it recognize properly?
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Thank you lennie for your reply. Yes, the device shows up on clients list/ device map. Router does handshake immediately but does not transmit proper speeds. Only difference here is Netgear is AP and is Wifi 5 (ac Mu-mino), whereas Asus ax88u is Wifi 6, ax, main router. So phone does talk well to Netgear but in ac mode. Phone immediately talks to Asus in ax mode but slow speeds. If there is any other way out please let me know... TIA.
gaggz said:
Thank you lennie for your reply. Yes, the device shows up on clients list/ device map. Router does handshake immediately but does not transmit proper speeds. Only difference here is Netgear is AP and is Wifi 5 (ac Mu-mino), whereas Asus ax88u is Wifi 6, ax, main router. So phone does talk well to Netgear but in ac mode. Phone immediately talks to Asus in ax mode but slow speeds. If there is any other way out please let me know... TIA.
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Click to collapse
Hmmm have you tried to reset network settings on your phone yet? But I seriously think it's a problem with the router and not the phone.
Does this problem only happen to the Note 10 and no other device?
Have you checked for router updates?
Do you use a private DNS service? VPN?
Do you have WiFi power saving mode enabled?
lennie said:
Hmmm have you tried to reset network settings on your phone yet? But I seriously think it's a problem with the router and not the phone.
Does this problem only happen to the Note 10 and no other device?
Have you checked for router updates?
Do you use a private DNS service? VPN?
Do you have WiFi power saving mode enabled?
Click to expand...
Click to collapse
Hi lennie
I did reset network settings, including forget network>reboot> re-program wifi password. Nothing worked. Router is updated. I do not use private DNS or VPN. Not sure about power saving, all settings are default... Also; in the past I used to have Netgear R7800 as main router and R6900P as AP, such incidents did not occur. Not sure where the problem lies. While contacting respective customer care, Asus blames Samsung and vice versa.
gaggz said:
Hi lennie
I did reset network settings, including forget network>reboot> re-program wifi password. Nothing worked. Router is updated. I do not use private DNS or VPN. Not sure about power saving, all settings are default... Also; in the past I used to have Netgear R7800 as main router and R6900P as AP, such incidents did not occur. Not sure where the problem lies. While contacting respective customer care, Asus blames Samsung and vice versa.
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Click to collapse
FYI for everyone - I just got on phone, my 4th time with Asus. They finally agreed that one more user was facing same issue so they have taken feedback seriously and are addressing this connectivity issue via another firmware update. No idea when this would be released. Asus asked me to return to original seller (an individual on eBay as it is within 30 days of purchase) or send to Asus for service. If service, then I will have to pay for shipping and arrange for a temporary router myself. Hence returning to seller on eBay. So we do have issues where router will not talk well with certain devices!
gaggz said:
FYI for everyone - I just got on phone, my 4th time with Asus. They finally agreed that one more user was facing same issue so they have taken feedback seriously and are addressing this connectivity issue via another firmware update. No idea when this would be released. Asus asked me to return to original seller (an individual on eBay as it is within 30 days of purchase) or send to Asus for service. If service, then I will have to pay for shipping and arrange for a temporary router myself. Hence returning to seller on eBay. So we do have issues where router will not talk well with certain devices!
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OK thought so. Glad to hear that they've taken your issue. There's a reason people don't buy Asus products anymore like they use to especially motherboards. They tend to do some things right and others just wrong which you usually don't find out until it's too late.
lennie said:
OK thought so. Glad to hear that they've taken your issue. There's a reason people don't buy Asus products anymore like they use to especially motherboards. They tend to do some things right and others just wrong which you usually don't find out until it's too late.
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Thanks lennie - any suggestions for a good router? I have one R7800 acting like AP, handles about 15 devices on 2.4Ghz (IoT - smart plugs, 3 wifi cameras @720p, not too much data load; and AX88U main router that handles about 8 devices, where most work is done, like iPads, Cellphones, Laptops on 5Ghz. I need to choose one main new router as I want to get rid of AX88U. Shall I get another R7800 as I did not see any performance difference between Wifi 5 & 6 on a 200mbps bandwidth - or I have shortlisted Wifi-6 RAX80 Netgear as main router. Any advice? TIA!
gaggz said:
Thanks lennie - any suggestions for a good router? I have one R7800 acting like AP, handles about 15 devices on 2.4Ghz (IoT - smart plugs, 3 wifi cameras @720p, not too much data load; and AX88U main router that handles about 8 devices, where most work is done, like iPads, Cellphones, Laptops on 5Ghz. I need to choose one main new router as I want to get rid of AX88U. Shall I get another R7800 as I did not see any performance difference between Wifi 5 & 6 on a 200mbps bandwidth - or I have shortlisted Wifi-6 RAX80 Netgear as main router. Any advice? TIA!
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Tell you the truth I wouldn't know. But I would go with what works, if the R7800 are works then I don't see why not.
lennie said:
Tell you the truth I wouldn't know. But I would go with what works, if the R7800 are works then I don't see why not.
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I got informed via another forum subscription that a new AX88U firmware update was out.......
It also happened around the day I was in a bitter situation as I was waiting for seller on eBay to accept my return request. He is a good guy who did not use the router on Ax devices. Now that I have purchased from him and using it on ax client, we came across this issue. Immediately upon reading this note, I updated the router firmware. I then went outside my home for a short walk but when I came back, my cellphone still had poor download speed with router upon reconnecting on 5Ghz. I explained this new observation and sent screenshots of speedtest and the seller kindly accepted my return request. Sadly this update did not sort out my issue.
But here is the good part: I had purchased a new AX88U at full price from Amazon. Initially I noted my 2.4 Ghz speed was very poor 4-25 mbps even when "6" was seen in wifi logo, means cellphone and router were on some new signal standard. With this update, I am getting 7 ms ping and 120-130 mbps download speed (same speeds on 2.4 Ghz with the "faulty" router described above). So this update did really speed up the internet speeds most evidently seen on 2.4 Ghz frequency. Also worth noting: I am not having the "poor download speed upon reconnect" with the brand new router that I just got.
Hello from Germany
This is a bug i already noticed and spent hours and hours with my Note 10 Plus and Asus AX88U !!! Now after 2 Month i give up. If you have 2 same 5GHZ Networks in your house (for better coverage) with the same SSID you can
see what is happening. My Internet Provider Speed is 200 down and 80 up. When first connected to the Asus Wifi 6 Router everything is fine. Than when you go one floor up you will get connected to the Other (i have tested both Asus AI and also as normal Access point via Ethernet ) Router and everything is ok. But than when you go back and connect again with the Asus AX88u in Wifi6 the Download speed on my Note 10 Plus is capped at 4-7 mbps down and 10 up !!! from 200/80. This is only affecting on the new Asus AX88u and Note 10 Plus and it doasn't metter if you switch Wifi6 or use Wifi5 AC . I tested also without 160 Mhz and every other mode nothing is changing. The sync on the Note 10 Plus is 1200 mbps on 5 GHZ so the most possible sync between note 10 device and the Router !! But after you connect to the same SSID on other channel in your house you will have this bug when returning to the Asus AX88u ! Only way is WIFI off and ON and all Speed are back again on Note 10. I have written to Samsung but no one replyed. With other devices like IPAD Pro 12.9 2018 or some Xiaomi devices everything works fine. Only Note 10 Plus is having this Bug . Most of the People will not notice it because almost all services will run fine for them with 10 mbps but i do because i always have my note 10 with Network Data in Statusbar and want to know all the time my network speed etc.
Sry for my English but i hope you understand. Definitly a AX88u Bug !
UPDATE: I tested with new Firmware from 25 of November they seemed to fixed it !!!
Update again : The Bug is still there! Almost every time when u roam in your house and reach again the wifi 6 router from Asus.
Again I have two wifi in my house with same ssid and different channels. It doesn't matter if you put the second router in access point mode or normal router(connected via ethernet cat 6 to Asus) . I also tryed a second Asus Router in Asus Mesh mode wired and over WiFi. Still same behavior.
When first connected to the Asus rt ax 88u with my note 10 plus everything is fine. The wifi sync is 1200 mbps when in same room and I get all of my isp bandwidth 200/80 from my provider. When I move upstairs and reach the second Hotspot the phone automatically switches to the other router (also tested different once). Also here everything is OK you get the full bandwidth up and down. But as soon as you return to the wifi 6 coverage of the rt ax88u the wifi speeds are dropping to almost 4-7 mbps! Down and maximum 20-30 up. Really strange behavior the sync is normal with 1200 mbps but you get no bandwidth! When moving up to the other network everything works fine again.
Also tryed with switching of ax mode but same problem with AC mode. This is a huge bug with Galaxy note 10 plus and Asus AX 88u Router
I recently acquired the Tenda NOVA MW6 mesh network, and have noticed wifi speed issues only with my note 10, not with roku 4k, not with my box S, not with galaxy tab s6, only with note 10, my cablemodem, it has the option wifi, also had problems, also only with note 10 ....
bovoro said:
I recently acquired the Tenda NOVA MW6 mesh network, and have noticed wifi speed issues only with my note 10, not with roku 4k, not with my box S, not with galaxy tab s6, only with note 10, my cablemodem, it has the option wifi, also had problems, also only with note 10 ....
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Same here, also the Tenda NOVA MW6, and also only speed problems with my Note 10. The reason why t¡is because Note 10 connects to 2.4 Ghz network that seems to be much slower than 5Ghz. Sometimes, out of the blue, Note 10 connects to 5Ghz wifi and then no speed problems at all. I'm trying to find out how to force 5Ghz connection or how to turn off 2.4 Ghz on Note 10, but Google disabled that options in last Android version. So, there seems to be no solution, maybe rooting could solve the issue.

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