S6 edge connected to wifi but no internet access - Android Q&A, Help & Troubleshooting

So pretty much it says it's connected and it has full signal (because I'm sitting right next to my router) but the messages on whatsapp won't send until I turn wifi off and on again or connect to my second router and then to the first one again.
Why is it happening and how can I fix it? I googled so much but everything is either temporary fix (like connecting to other wifi network and then to first one again) or it doesn't work.
My S6 edge is running Android 6.0.1 unrooted

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[Q] Optimus one Wifi issues - please advise

Hi guys, so here's the deal : Just got a brand new Optimus One and the Wifi dosen't really work. It took me ages to get it to detect my home network ( Realtek RTL8187, used as a hotspot via win7's wireless miniport adapter - so basically virtual hotspot) Once I managed to get a connection the device would either be stuck at "obtaining ip adress from..." or would simply disconnect and reconnect in a quick burst. I finally managed to get it to connect by manually assigning the internet sharing permissions for the virtual miniport, but the speed is abysmal! We're talking to the order of bytes/s, measured both by attempting a small download from the phone and by reading the in/out data on the pc connection info. Upon some further poking around, a few wifi adapter and phone restarts later, I notice that when I connect to my hotspot the phone's wifi manager reports a normal speed of 54mb/s, but when I actually try to use the connection (say, the youtube app) it works fine for a second or two (it usually loads a bit of a vid, or half of a big webpage) and then drops down to the aforementioned speed and the phone's wifi manager indicated that the connection is 2mb/s
Also, I went out before setting up my home network to a mall and tried to connect to one of the free hotspots available. On some, it would connect straight away, but be very slow (signal wasn't great) and on one (max signal) it would disconnect/reconnect in very short bursts (10-15 times a minute) and it would eventually establish the connection. Then the same speed issue as above: works fine for a few seconds, drops down to unusable. Didn't think about checking the connection speed there, simply thought the public network was overused. In hindsight, the problems were similar to the ones experienced at home
A few side notes: The 3g speed is fine, consistent and problem-free
I have tried changing my home wifi's frequency to a number of settings (there are quite a few other wifi's around, I know it could cause issues if they overlap)
My wifi connection was actually not detected by a friend's laptop wifi, but we could connect our computers just fine via ad-hoc (which from what I've heard is a no-go with android at the moment - and the phone does not see ad-hoc)
The phone is brand new, only installed a handfull of apps on it, didn't change any relevant settings (I think)
Set wifi sleep policy to "never"
My pc wireless adapter worked just fine in the past, used it for a few months as the main internet connection, and even with half-signal it would achieve good speed. I also moved the antenna away from the PC itself to avoid interference
I set my PC to use only 802.11b since I've read around that some phones prefer this to 802.11b/g
That's about all I can think of right now. (oh, and It's my first android, so I don't know my way around the OS that great yet)
I appreciate any advice you can give me. Basically I'm trying to find out if it's an issue with my Wifi adapter, it's settings, the phone's settings, or if the phone itself might be broken, so I can send it back to warranty.
Thanks in advance.
Try switching from b to g.
it was initially on b/g

Fixes for slow and dropping wifi

(April 24th, 2015) After searching for a solution to my wifi dropping I collected a comprehensive list that has helped in one way or another. After seeing similar issues on S5 phones it appears this isn't solely a S6 problem. If you find or have used a method not on the list please report and I'll add it.
Possible fixes for Galaxy S6 WiFi problems:
Factory Reset
“Forgetting” your Wifi Network and Reconnecting
Settings ->Wi-Fi. Hit menu then Advanced. Make sure Keep Wi-Fi on is set to Always.
Settings, more networks, mobile network, uncheck Connection Optimizer
Under the Wi-Fi settings uncheck "Smart Network Switch"
Resetting the Modem/Router
Settings→wifi→WPS Button and same button on modem/router to 'lock on'
Switching from DHCP to Static Connection on Phone
Connect to your router's 2.4GHz band instead of 5GHz
Install a DNS changer app, select primary/secondary servers to Google or yandex.
Changing the Router Bandwidth Settings
Changing the Router’s Broadcast Channel
Adjusting the router security settings to WPA or WPA2
Enable WMM in your router settings
Disable IPV6 in your router settings
Calling your ISP and upgrading to a Higher Bandwidth/Speed
Wipe phone cache
1) Power off the Samsung Galaxy S6
2) Hold the power off, volume up and the home button all at the same time
3) After some seconds, the Galaxy S6 will vibrate once and the recovery mode is started
4) Search for the entry called “wipe cache partition” and start it
5) After a few minutes the process is complete and you can restart the Galaxy S6 with “reboot system now”
Disable phone's wifi power saving mode
1) Open your phone dialer
2) Enter *#0011#
3) Select more (top right)
4) Select WiFi
5) Turn off WiFi power save mode(enabled by default)
6) Exit and hopefully your WiFi connectivity issues will no longer be a problem
Click to expand...
Click to collapse
(April 11th, 2015) Anyone experiencing wifi dropping out? It seems to happen when I require it, ie browsing themes or downloading apps. It will lose wifi and the lte icon appears and the screen freezes temporarily until wifi is restored. Last night this happened like 6 times one after another which wasd very annoying.
WiFi working petectly fine connected to my as router
Sent from my Samsung Galaxy s6 Edge
Yes, I am having the same issue. WiFi drops out, screen freezes and then WiFi comes back and everything works again :/
It seems to have settled down a little now, only seems to happen when there is quite a bit of WiFi activity.
It kept happening to me while I was downloading a GPS map and also when syncing Spotify.
I am connected to a 5GHz AC router, what sort of connection are you using?
Yes,
My device has also done this also around 4 - 5 times and i was thinking could it be Smart Network Switch which is on for me.
i have also noticed the wi-fi has dropped out for when the phone is asleep and i awake it.
`````If smart network switch is enabled, your device will be connected to a mobile network automatically when the Wi-Fi connection is unstable. `````
Master2k5 said:
Yes,
My device has also done this also around 4 - 5 times and i was thinking could it be Smart Network Switch which is on for me.
i have also noticed the wi-fi has dropped out for when the phone is asleep and i awake it.
`````If smart network switch is enabled, your device will be connected to a mobile network automatically when the Wi-Fi connection is unstable. `````
Click to expand...
Click to collapse
I don't have Smart Network Switch enabled, so it isn't that for me.
My WiFi always stays connected through sleep though.
What sort of connection are you on? G/N/AC/2.4GHz/5GHz?
IakobosJ said:
I don't have Smart Network Switch enabled, so it isn't that for me.
My WiFi always stays connected through sleep though.
What sort of connection are you on? G/N/AC/2.4GHz/5GHz?
Click to expand...
Click to collapse
i am on a 5GHz BT hub 5
My Smart Network Switch is off and I'm in the same room as my router so signal or the setting isn't the issue. Anyone using a Sprint Airsve in-home signal booster?
Liksys E4200 802 11 N router
I'm going to a friend's house later and will see if the same issues occur on his network.
I'll be able to do some tests at work tomorrow.
I haven't had it happen today at all :/
I downloaded Angry Birds Space 3 times this morning and no wifi drops. I was on the road and something locked up where I couldn't swipe between home screens or open the app drawer, noted I had wifi on even though I was in the car outside of a network. Didn't get to test the wifi at my friend's house but just tried downloading AB again and wifi dropped out.
This is getting annoying. Thinking I might see about going in to BB to exchange, this isn't a glitch I can live with or risk being a hardware defect. I plan on contacting Samsung to make sure they make a note, hopefully they are aware of this.
Galaxy S6 (not the edge.) Same issue. Wifi drops. Music stutters. Have to turn wifi off and back on to reconnect. Using Apple airport express.
Same thing here with galaxy s6 edge. Wifi keeps dropping out. Web pages too slow to load.
Will return the phone tomorrow.
Sent from my SM-G900W8 using XDA Free mobile app
Jesus, these phones are gitchy as all hell. I get mine Thursday. Going to mess around with it for a week and if I keep having these same problems I'm just going to return it and move to something else. I've never seen soo many issues with a new phone in both software and hardware.
If anyone can test other wifi networks or exchange phones, please report back with results.
Googling turned up a similar problem people had with the S5, some found fixes while others didn't.
http://forums.androidcentral.com/sa...msung-galaxy-s5-constantly-dropping-wifi.html
Another link lists some speed fix options for the S6
http://recomhub.com/blog/how-to-fix-samsung-galaxy-s6-slow-wifi-problem/
How to Galaxy S6 slow WiFi problems:
Factory Reset Galaxy S6
“Forgetting” your Wifi Network and Reconnecting
Resetting the Modem/Router
Switching from DHCP to Static Connection on Phone
Switching DNS to Google’s Addresses on Phone
Changing the Router Bandwidth Settings
Changing the Router’s Broadcast Channel
Adjusting the Modem/Router Security Settings and even Disabling Security
Calling your ISP and upgrading to a Higher Bandwidth/Speed
How to fix slow wifi on Galaxy S6:
Power off the Samsung Galaxy S6
Hold the power off, volume up and the home button all at the same time
After some seconds, the Galaxy S6 will vibrate once and the recovery mode is started
Search for the entry called “wipe cache partition” and start it
After a few minutes the process is complete and you can restart the Galaxy S6 with “reboot system now”
Click to expand...
Click to collapse
I tried a few of those, others aren't necessary. I did 2 factory resets and the wifi was fine downloading 54 apps but dropped at the last one, and lasted all 55 but dropped later. I'm going in for an exchange tomorrow unless someone posts a magic fix.
The Recomhub website helped me fix my WiFi dropping problem. Thanks for the link, it really solved my issues!
5GHz Network
I've been testing this, because it is really annoying me now.
When I am connected to my 5GHz AC Network at home it drops out and freezes the phone quite a bit.
When I am connected to my 2.4GHz N Network at home, there is never an issue. Wireless actually seems to work better on this network.
So, for me at least, this problem is being caused by the 5GHz networks and switching back to 2.4GHz makes the problem go away.
This is an annoying bug, I have emailed Samsung about it, let's see if anyone replies.
My router is Simultaneous Dual-Band N (2.4 & 5 GHz) so I wonder if that is causing my issues. No idea how to remedy it at the moment.
rank78 said:
My router is Simultaneous Dual-Band N (2.4 & 5 GHz) so I wonder if that is causing my issues. No idea how to remedy it at the moment.
Click to expand...
Click to collapse
Mine is too, but I have the ability in the router to separate the two networks, so my 5GHz network has a different SSID than the 2.4GHz one.
I've been connected to the 2.4GHz network all of tonight and done quite a bit of downloading to test it and it hasn't dropped out once, yet on 5GHz it would have done it at least twice already by now.
I cannot replicate this problem at work on the 5GHz Network. It must be something to do with the channels they are set at.
I will try and change some channels on the work network, see if I can get it the same as at home and then test again.
I have a call booked with Samsung who are going to remote my phone, hopefully they can pinpoint something
I can't even connect to my home's 5GHz, the 2.4GHx is what I'm testing.
I went to BB Wednesday and the Samsung rep wasn't aware of any wifi issue or remedies beyond what is mentioned in this thread. Of course I didn't lose wifi the brief time on their wifi network so the guy didn't know what to say other than contact Samsung support.
I tested this at my house last night.
64GB White Edge AT&T on 5.0.2
E3000 router with DDWRT
N700 Router with DDWRT
Both dual band, both running 2.4 and 5 Ghz
Both set to 40 channel width
Both with channels spanned correctly for no overlapping
Never lost connection while downloading and updating all apps throughout about 2 hours of use. Speeds saturated my broadband link (50Mbits/Sec) and never had a problem. However, I don't know about battery drain as I'm brand new and still letting everything settle for another few days before commenting/testing.

Bluetooth tethering does not work

Hello there, it's been a long time since I've posted on XDA but I require assistance. I purchased an S6 Edge a few months back and everything is working as should apart from bluetooth tethering.
I have tried with my laptop and my nexus 7 which I have installed in my car, both of which worked fine with my previous HTC M8. After setting up tethering on my phone, the other devices connect and the icon appears indicating that tethering is active and an internet connection is available, but I am not able to actually connect to the internet.
My Samsung is not rooted, unfortunately, as I don't want to trip 'knox' for warranty purposes.
Just to clarify that I am doing everything correctly, I select 'mobile hotspot and tethering' from the settings menu of my S6 Edge, then 'Bluetooth tethering'. This turns on Bluetooth and enables tethering. From my paired devices (Laptop and nexus 7) I select 'Use as internet connection'. The devices connect and the tethering icon appears. No internet connection is available.
I imagine this isn't a common issue as after searching I didn't find any threads indicating the same problem.
What would be the best way to troubleshoot this?
EDIT: I would like to add that Bluetooth file sharing works without problems.
EDIT: I would also like to add that my phone is SIM free, and I use the same provider as with my previous HTC M8 that worked fine.
My android version is still 5.1.1 as the update is not available in my area yet.
Thanks in advance for any help,
Rob.
Update: I manually updated my phone to 6.0.1 (without rooting) as I never got the update pushed to my phone. I am still having the same bt tethering issue. My phone says I'm connected and sharing internet with my other device (nexus 7) but that device isn't connected. My s6 is connected fine, it's just not sharing properly.
I get the same results with my laptop.
Can any body suggest any fixes??
EDIT: If my phone is connected to wifi, it will share that connection. If it is connected to 3g/4g it doesn't share the connection even though the phone itself is connected.
Bump.
I suppose nobody is having this problem. Is there any way to debug what is happening?
I am having the same problem. Trying to bluetooth tether my Galaxy s6 edge to Galaxy S2 tab. Both on Android 6.0.1 It appears that the connection is established, but internet does not work on the tablet. Let me know if you had any luck.

<Solved> Swift2+ Nougat v7.1.1 WiFi issue

<Solved> Swift2+ Nougat v7.1.1 WiFi issue
I have a Swift2+ (unmodified) which worked fine under Marmite.
The OTA upgrade to Nougat v7.1.1 seemed to go smoothly, apart from a slight issue recognising the SIM and the SDCard which some fiddling around and a couple of restarts seem to have sorted.
However......The phone is unable to connect to the Internet via WiFi - checked network settings, changed to static address, restarted again - still doesn't work.
Using the Fing app reveals all the other active devices on the local network so the WiFi is connecting.
Looking on the router I can see the phone as a connected device. But the phone insists there is no Internet connectivity.
All the other devices, including various mobile phones, all work just fine.
Moving the Swift2+ away from WiFi range it switches to the 3G network and then insists there is no Internet connection via the GPRS channel. Moving to a friends house gives the same issue with the WiFi at that location.
So the problem is with the phone not the WiFi network.
Any suggestions ?
I've no problems with WiFi, try to wipe data (factory reset) and if it doesn't help contact WileyFox support...
Problem sorted - it was a bad DNS entry on the phone, for some reason stayed the same on static and DHCP until I edited it.
Now all ok.

S9+ showing "connected to WLAN, no internet"

So, I got my S9+ (international version, DUOS, 256 GB) last week from the Samsung store. I am on stock ROM (and will stay as long as my warranty lasts or someone finds a way to root with Knox 0x0, which I am not expecting).
At home, I have a WLAN Mesh (AVM Fritz!Box 6590 Cable, 2x AVM Fritz! 1750E Repeater on a wired connection), everything working great with any device.
Except my S9+. It connects and everything is fine, at some point - especially when using it for e.g. streaming Netflix or so - it will stay connected to the WLAN but will say "no internet access". Switching WLAN on and off fixes the issue until it happens the next time (minutes to hours later). I have no special settings, no neighbouring networks which would interfere. I have 2,4 and 5 GHz active and automatic channel selection. All other devices in my home work with no problems. I have found similar issues froim users on other Samsung phones (S6/7/8 series (my former S5 on Resurrection Remix Oreo does not show t his behaviour)), but no answers that worked (like forget the network, reboot and reenter credentials).
Quite annoying, anyone knows a fix? Big THANKS in advance.
No one experiencing the same thing or havin any ideas?
I have had the same issue in the beginning with the phone. I have a router with a cisco switch connected to it. The standard router's wifi wasn't sufficient in coverage through my house. I got hold of a cisco AP and connected it to the switch and disabled the wifi on the router. That's when my issue started. Fiddled around trying various options, but the one that worked for me was to tell the phone to forget my network, restart the phone and then "setup" the wifi on the phone again(password for wifi needed to be entered as it sees the network as a new one) Haven't had the issue after that. I did notice at my office that even though the wifi conection is good, that if it goes below a certain percentage, the mobile data will kick in, although I have that option switched off. I also picked up that if your line connection's speed goes very low for whatever reason, the same problem appears again that the phone assumes there is no internet
Thanks, this is what I've read from other threads (with S7, S8), too. But this didn't work for me. My repeaters get ther signal through LAN cable and I have a fast connection, coverage all over my house and garden. I really do not have an idea on what to try...

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