WIFI problems - Samsung Galaxy S8+ Questions & Answers

Got a new S8+ yesterday.
Everything is fine except WIFI, it keeps disconnecting all the time, going on and off, until it finally stops working...
I tried removing all background signal checking and all unnecessary options, and also I did reset it to factory twice, but the problem persisted...
I have my former S7 Edge on the same network without problems...

I am having the same issue. Disconnect then reconnect every few min.

I had one disconnect this morning but it transfered to the 2G instead of the 5G.
Sent from my Samsung Galaxy S8+ using TapaTalk Pro

Check your network settings; it may be switching between LTE and WiFi to "conserve energy, buy having the strongest connection." I have had that issue in the past with other devices.

bigbad614 said:
Check your network settings; it may be switching between LTE and WiFi to "conserve energy, buy having the strongest connection." I have had that issue in the past with other devices.
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Tried that already, but it is completely disabled..
In fact
Nearby Device Scanning is OFF
Wifi Calling is OFF
Location is PHONE ONLY
Smart Network Switch is OFF
Network Notification is OFF
Hotspot 2.0 is OFF
Keep WIFI on during sleep ALWAYS
and it is still happening.....

When I was first provisioning the device at home I was running it off a Ubiquiti AP Pro and kept getting disconnected. I took it off WiFi and ran the setup on 4G LTE only and connected to my WiFi after. I run Google Fiber and did some 5GHZ speedtest and was never less than 600mpbs up and down. Absolutely 0 chance the initial issue is my network at home. I haven't seen it disconnect since the initial setup but that does worry me a bit. I'd wipe the network profile and set back up.

Probably unrelated but I've found that the 5Ghz WIFI strength on my S8 5.8inch is terrible. The 2.4Ghz is fine though. Compared to my Pixel the 5Ghz is on average about 1/3 the connection speed at same range as the pixel and has much lower strength signal (testing with WIFIAnalyzer). If I cup the phone with 2 hands in landscape mode (how I normally watch videos) I often lose my WIFI connection completely from the 5Ghz network here.

Me to having same issue with WiFi disconnect automatically getting irritated from that
How to fix this guys

Had the same problem on mine. Setting the IP address to a Static IP fixed the issue.

Try going to settings, backup and reset, reset network settings. See if that works.
Sent from my SM-G955U

Related

[Q] T-Mobile Tether, data keeps failing randomly

Hey,
I have a Nexus 5 that is set up to basically act as a router using wireless tethering. I live in an area where I constantly have full-blast LTE that is usually above 30Mbps. For about a month, everything's been great until this last week. Now, every few hours my data connection gets killed completely after anywhere from a few minutes to a few hours after tethering has been running. Data stops working on all tethered devices as well as the Nexus 5. Entering airplane mode and then resetting the WiFi tether fixes the symptoms, and if that fails, restarting fixes it.
I've disabled wireless_tether_dun (sp?), switched to IPv4 and I sometimes use a VPN that passes through all network traffic through the VPN. Even with VPN disabled, the data drop keeps happening.
I know there are so many things that can be going on, but has anyone else noticed this recently? I'm wondering if it is a hardware issue, a signal issue, or perhaps T-Mobile has changed something on their side of things that is killing my somewhat obvious abuse of their network.
x2
jondwillis said:
Data stops working on all tethered devices as well as the Nexus 5. Entering airplane mode and then resetting the WiFi tether fixes the symptoms, and if that fails, restarting fixes it.
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I am having the exact same issue -my post- in a completely different place, only I have been assured it is completely fine to use my phone on the network in this way. Did you ever find a solution to this?

WiFi issues

Anyone else with WiFi issues? 90% of the time I have no problems but 10% of the time it seems the connection hangs. Data transfer will pause and resume 30 secs or a minute later. I have tested this with speed test and was able to reproduce. Happens on both my 2ghz and 5ghz networks. I am rooted but I'm going to do a factory reset to see if issue persists. I do know it's not my WiFi as my other devices have no trouble. But this is quite annoying.
Sent from my HTC6525LVW using Tapatalk
murryrulz said:
Anyone else with WiFi issues? 90% of the time I have no problems but 10% of the time it seems the connection hangs. Data transfer will pause and resume 30 secs or a minute later. I have tested this with speed test and was able to reproduce. Happens on both my 2ghz and 5ghz networks. I am rooted but I'm going to do a factory reset to see if issue persists. I do know it's not my WiFi as my other devices have no trouble. But this is quite annoying.
Sent from my HTC6525LVW using Tapatalk
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Are you by chance using an Apple router or access point? For some reason, they don't seem to play well with Android devices, including my M8. I've had a similar experience with 4 Android devices and 2 different Apple routers. The devices continuously disconnect and reconnect.
No I'm using an Asus ac66. The funny thing is the connection doesn't drop. It always says connected. The data just stops flowing and then starts again. For example I'll run a speed test and the download will pause then start up again. Very odd. Never had a phone do this before
Sent from my Nexus 7 using Tapatalk
I've got an Apple Airport Extreme. I also have several Android devices. Have had many that I no long have or use. I've never had any problem with my wifi on any of them. I have to wonder if your problem isn't related to something else. Or, possibly your router needs to be replaced. Might be a matter of settings too. But, like I said, I've never had any problems with mine.
Within the "Advanced Wi-Fi" settings there is an auto-enabled option called "Wi-Fi Optimization" which minimizes battery usage when Wi-Fi is on. I assume this monitors for extended periods of inactivity (screen off, no active downloads, etc.) and temporarily disables/hibernates Wi-Fi activity.
I've kept this option enabled and haven't had any issues so far, but maybe you could try testing with/without this setting enabled? Another thing to try would be checking highly-used radio channels in your area with an application like InSSIDer and making sure your router is broadcasting on a low-use channel. I see no correlation with the radio channel and your new M8, but it's worth a try
insertnewsn said:
Within the "Advanced Wi-Fi" settings there is an auto-enabled option called "Wi-Fi Optimization" which minimizes battery usage when Wi-Fi is on. I assume this monitors for extended periods of inactivity (screen off, no active downloads, etc.) and temporarily disables/hibernates Wi-Fi activity.
I've kept this option enabled and haven't had any issues so far, but maybe you could try testing with/without this setting enabled? Another thing to try would be checking highly-used radio channels in your area with an application like InSSIDer and making sure your router is broadcasting on a low-use channel. I see no correlation with the radio channel and your new M8, but it's worth a try
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Click to collapse
I have the same issues. and ive turned off wifi optimizaiton, ive set my wifi control frequency to 149, ive tried to switch between 2.4 and 5ghz. i feel like my issue is with the phone not picking up the wifi signals very well... we live in a brick house, and the asus ac68u sits right in the middle of th house, and my room is only right around the corner. everyone elses phone picks up 5ghz or 2.4ghz frequency fine in my room, even my gf's M8 (we bought ours from verizon same time for the deal). i literally get wifi in my rom 10% of the time or its choppy and slow. so everytime im in my room i have to switch to cellular :|

Strange WiFI issue causing rebooting of my S8+

Hello there!
I'm been having a strange problem with my device, which causes a semi reboot.
I mean semi, because it appears to be rebooting, but it's faster and it seems to not complete the whole rebooting process.
I've been investigating and discovered that it's related to WIFI.
I have a Archer C9 with 2.4 and 5Ghz wifi. Each is set to a different SSID, so I know which band I'm using.
My S8+ is a FD Exynos at ZTO/CRC7 Oreo.
There's a option in advanced settings of wifi section, that automatically alternates from wifi to mobile, when wifi signal is weak.
So I found a spot in my bedroom where the S8+ loses wifi signal for a moment, but it's sufficient to make it alternate to LTE, either in 2.4 or 5Ghz bands (even though the 2.4 Ghz gets 40~50% signal in that spot).
After that, the cellphone keeps saying that wifi is weak and won't let me reconnect to it, even if I'm close to the router.
After a minute it reboots and connects to the wifi.
I disabled that option and so far (15h) it hasn't rebooted yet, even if I go to that spot (it loses wifi signal there, but recovers after a few seconds)
Is that a software issue or a hardware issue?
Thanks a lot in advance!
seems like a software issue since it works after reboot
try resetting the phone to factory defaults

WiFi & LTE Connection Issues

Hello all!
My wife is running a T-Mobile Note 10+ and having major issues with the WiFi and mobile cell service. She constantly runs into her apps like Netflix and Plex saying she has no connection. She's complained of the WiFi being bad and having to disconnect from it, and then she can use LTE to watch shows, and then sometimes LTE stops working and connecting to WiFi fixes it.
Here's the thing. I finally was able to see it when it was having a fit on the WiFi. Going into the connection settings showed it was connected to our 5GHz WiFi at 7Mbps connection speed. Nothing was loading. This was on a 1300Mbps link. I disconnected from the WiFi and reconnected to it, without moving the phone's location, and voila! It reconnected at 300 something Mbps and everything started working. I believe it may be doing the same with LTE as it cuts out randomly and constantly. I saw it myself while we were driving somewhere and she couldn't load websites. My phone (OnePlus 7 Pro) is on T-Mobile as well and I have NEVER run into these issues. We are on the same provider / plan.
Her phone is fully updated and isn't rooted. I haven't touched it as a tech nerd so it's running as a total consumer as far as settings go (haven't played with APN or wireless radio or anything).
Has anyone else experienced these issues? Does anyone have any ideas to fix this?
Did you try a different wlan access point? Actually i am on the Note 10 with Exynos. Wlan and LTE are working nice for me.
Perhaps your problem is meanwhile solved through an update.
I have the same problem, mainly in LTe but sometimes also in Wifi
ANyone found a workaround ?
i've been having this issue constantly since the march security update. Didn't notice it before but it'll disconnect from my wifi, still recognise it but wont reconnect unless i restart my phone
Same here. Brazil SM-N975F.

Android Wifi Calling issue

Hi,
I have noticed a strange behaviour using Wifi Calling. When I am away from home, and returning, it takes the phone about 15-20 mins for the wifi calling icon to show up and to be available. If I use airplane mode on/off it works instantly. I have seen this a few times on IOS as well, but seems more frequent on Android. So far tested on Samsung S22U and Sony Xperia 1 IV.
Also, today, while I was in a call, using VoWifi, the call dropped and when I looked immediately on the phone, vowifi icon was gone and it came back in a matter of 10 seconds.
Has anyone faced these issues and was able to narrow down the cause of it? My Wifi network does not have a firewall in place nor am I doing any sort of filtering. Changing between DNS servers makes no difference.
Turn off automatic WiFi network login on your phone and check again if it helped.
Hi, I do not have such option available. You mean wifi auto connect when in range?
Yes, because the phone can switch when the signal from the first router is weakening. (1)
Also, by setting up a manual connection, you can be sure that you are connecting to the router you want to connect to, not just any one. (2)
ze7zez said:
Yes, because the phone can switch when the signal from the first router is weakening. (1)
Also, by setting up a manual connection, you can be sure that you are connecting to the router you want to connect to, not just any one. (2)
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So you're saying turn those 2 settings off? I just recently ran into this issue with my Wi-Fi conking out intermittently and I'm experiencing 20% battery loss over night. I'm thinking its bad hardware. I just turned off these settings. I'll report back if it helps.

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