Wifi connected but pages time out - Galaxy S 4 Active Q&A, Help & Troubleshooting

I have a SGH-I537 with 5.0.1. Lately, I noticed that even though the Wifi Connection is on, pages time out constantly. There are brief moments where the connection is good and can access pages, but most of the time it just doesn't work. I can ping to and from my laptop and phone without any missing packets. It authenticates fine with the AP, but can't access any page, even by IP address. Thinking that maybe the firmware was at fault, I reflashed to OC7, but it is still behaving the same. Is it possible that the WiFi radio is dying?

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[Q] Bell?/Sasktel MobileAP Data Drops

Hi All,
I've had my SGS since September of 2010. When tethering using mobile AP I get frequent "disconnects" on any PC/Laptop I use where for a time I'm unable to do anything over HTTP or HTTPS, but other protocols seem fine. The real kicker is that the connection doesn't actually drop.
Let's say I have two PCs connected one is just a regular wifi tether surfing the net, checking email, etc. The other PC has a VPN tunnel which handles all internet traffic through it. The non-VPN PC will start having problems with websites ("Page cannot be displayed", "Connection refused", etc.) while the other (through the VPN tunnel) can keep going 100%.
I can be surfing along, lose connection, start up my VPN tunnel back to my office (even when I have no "web" access), and then everything will work 100% for hours on end. I've kept this VPN tunnel connected for the whole trip from Swift Current to Saskatoon and never had a drop except in one or two low spots. However, without the VPN tunnel I would have web issues every 15 - 20 minutes and they last for 30 seconds to 1 minute.
I called Sasktel twice on this now and the first time they admitted to having problems with some websites (mls.ca, flikr.com) where portions of the pages don't load correctly. The second time I called in and they denied having (or ever having) any issues.
Anyone else having similar issues? I think Sasktel (not sure about Bell) is playing with HTTP and HTTPS traffic. Whatever they're doing it getting in the way of normal communications..
Thanks!!
Riley

AirDroid won't work w/ ICS Leak?

I can't get AirDroid to connect using ICS leak 213.
I can't even get my phone to respond to a ping from my laptop on the same network, though I can ping my laptop from my phone on the same network.
Any ideas?
JasonOT said:
I can't get AirDroid to connect using ICS leak 213.
I can't even get my phone to respond to a ping from my laptop on the same network, though I can ping my laptop from my phone on the same network.
Any ideas?
Click to expand...
Click to collapse
It sounds more like a network/router issue than an AirDroid issue, it worked fine for me in .213 and .215 leaks.
Is your phone on a VPN connection? If yes, then it's possible that your phone has multiple IP addresses and AirDroid is showing one which is not accessible from your laptop.
Did you try both connection methods? Via the local IP and via the AirDroid.com wensite?
No VPN connection.
I tried both by local IP and web.airdroid.com, and checked that the local IP is correct from both About>Status and my router.
If I try to connect just through Chrome, I never get anything. If I try to connect by scanning the QR code through my phone, I can sometimes get it to connect initially and bring my to the AirDroid desktop, but I almost always can't access contacts, messages, etc.
I tried port forwarding 8888 for my local IP, but that didn't seem to make any difference.
The strange thing is that my Touchpad works fine with AirDroid. In the past, I've had some odd Wifi issues with both my Droid 4 and my Droid 3, e.g. adding an Exchange account won't complete setup if I'm using wifi on either of those phones (on GB and ICS), but it has worked fine on Android devices without cellular radios (my Touchpad and Archos 101).
It appears like it's a network/router issue, but at the same time appears like it's not.
JasonOT said:
..but it has worked fine on Android devices without cellular radios (my Touchpad and Archos 101).
Click to expand...
Click to collapse
There could be a clue right here. Do you have a mobile data subscription?
If yes, then perhaps there are some very small WiFi drops which cause Android to try to connect to mobile data instead of WiFi, and the time it spends without the local IP might just be enough to impact AirDroid performance.
You could try the following:
Put the phone in Airplane Mode to disable all wireless connections
Manually enable WiFi - this is possible without disabling Airplane Mode
Now you are on a pure WiFi connection, no mobile data or Bluetooth PAN to interfere. Does that improve AirDroid's behaviour?
Also, if you know how your router works, you can give the Droid 4 a fixed IP address to avoid the IP changing when there is any network hiccup. Most modern routers usually seem to remember which IP they assigned to a device via DHCP anyway (at least for a limited amount of time) but it's worth a shot.
No such luck with the Airplane Mode/Wifi. I outright turning the cell radio off with Phone Info too, still didn't work.
With DD-WRT, my router will keep IPs and MACs associated, so it's not that the IP is changing.
If I reboot the phone, it'll work a little bit initially but eventually stop working and I won't be able to ping it either.

Using wifi causes router to lose connection

At first I thought I may have had a faulty device, but I've been messing around and testing things, and I've concluded that my phone is causing my wifi router to lose connectivity. If I turn the wifi off on my HTC the router works fine with all other devices (laptop, iphone5, google tv) but once I turn the wifi on I lose connection briefly. I connect to wifi fine and my router shows a stable connection, but as soon as I start to browse or stream anything I will lose connection for about 20 seconds across all devices. I'm not too knowledgeable when it comes to networks, so I'm a bit dumbfounded. I've tried changing DNS servers, set IP to static, reserved DHCP in my router settings, but nothing is working. Does anybody have any suggestions?

Anyone getting wifi issues? I stay connected but can't pass any traffic

I have been having issues where i am connected to the wifi but the device stops passing any traffic. I have fing installed and i can't ping any other devices on my network. I know its just my phone because i have my work phone and tablet connected to the wifi and they still work fine browsing webpages, watching movies etc while the droid turbo can no longer communicate with the local lan or out to the internet. If i switch the wifi off then on again it will reconnect and then work normally. I can then ping devices on the local lan and access pages on the internet. This has happened a number of times now since i got the device.
Edit: I just updated the phone and still get the issue. I have a cisco WAP at home, we have cisco WAP's at work which i will test tomorrow. If this thing still has issues i am just going to swap it out for a Note 4.
Check this out:
http://forum.xda-developers.com/showthread.php?t=2925844
I've been seeing issues with Cisco wlans too.
Sent from my XT1254 using XDA Free mobile app
so it looks like it works good at work, something with my home cisco ap and this phone as all other devices at home work ok.
-magnum- said:
I have been having issues where i am connected to the wifi but the device stops passing any traffic. I have fing installed and i can't ping any other devices on my network. I know its just my phone because i have my work phone and tablet connected to the wifi and they still work fine browsing webpages, watching movies etc while the droid turbo can no longer communicate with the local lan or out to the internet. If i switch the wifi off then on again it will reconnect and then work normally. I can then ping devices on the local lan and access pages on the internet. This has happened a number of times now since i got the device.
Edit: I just updated the phone and still get the issue. I have a cisco WAP at home, we have cisco WAP's at work which i will test tomorrow. If this thing still has issues i am just going to swap it out for a Note 4.
Click to expand...
Click to collapse
Yeah this phone does not seem to like my router for some reason. Keep in mind I'm not a networking expert, but I've tried every combination of options and settings every which way from Sunday and I just can't get the thing to work. When I do connect the phone to my wifi it kills the the connection on every device in the house. At first I though it was just a wireless thing, but even the downstairs computer which is plugged in directly to the router doesn't work. Then as soon as I disconnect the phone every device works again. I thought maybe there was too many devices, so I disconnected all but the downstairs computer, still had the issue when I connected the Turbo. I've tried just turning off the WPA2 and just having an open system, I've tried connecting the phone using a WPS pin (This one actually worked for a good 5 minutes before crapping out and hasn't worked since). On the advanced options of the phone I tried an automatic IP as opposed to the default DHCP setting (This also worked for a good 5 minutes before not working ever again). I've tried limiting it to just one frequency band. I have tried so many different things and I just cannot make this phone work on my router. And I know it's my router because the phone works fine at work.
phone: Droid Turbo
Router : Asus rt-ac66r
yup within ten minutes of getting home, the device no longer passes traffic. My work S5 still works fine at home and so does my samsung tablet. The device worked on wifi all day at work on our enterprise wpa2 network no issues. I tried doing static ip at home, changing to 2.4 ghz, trying new ssid. Not sure what else to do with this thing...
Not just you
I posted a comment on Motorola's forum where people are discussing their wifi issues... And my work around. I currently beleive its a software issue and can be fixed via update. Also, today I found (it appears) that the longer the phone goes without a reboot, the shorter amount of the it appears to go with out needing the wifi card reset.
https://forums.motorola.com/comment/829632
My work around fix...
First, over night my wifes phone now behaves just like mine. It now connects to wifi and after sometime passes it no longer passes data (but stays connected). I needed a way to auto disable/enable the card... I installed Tasker. I have it set to check every 15 minutes, if the phone is connected to WiFi, to disable then enable the WiFi card. I use WifiMatic to enable the wifi card when the phone is connected to the cellular tower that is near my house. (Doing this by GPS uses more battery power...) Using Tasker with the rule to verify its connected to wifi first helps not enabling wifi if its nit needed and lets WifiMatic enable/disable it as needed.
wicketts.net

Unable to ping from SM-T813

I use the ComicRack PC and Android programs to sync comic files to my tablet on my home network. This generally works okay but occasionally the tablet will not connect to the server.
When this occurs, I have tried pinging from my tablet to the PC (using various android network tools like Fing) and the pings fail. In fact, when this happens I can't ping ANYTHING from my tablet, not even localhost. But my network connection is active because I can still get to both my local network files (using ES File Explorer) and the internet just fine.
I have tried resetting my wifi connections, setting static ip addresses, changing from 2.4 to 5 g networks, and a number of other things. The fact that it won't even ping localhost, however, would seem to indicate the problem is with the tablet and not the network.
After a few days (or weeks), it seems to start working again randomly - not from rebooting or anything else, it just does.
I am currently not rooted, running factory rom (see attachment). I'm considering rooting to see if I can get around the problem but since I use Private Mode I've been hesitant to do so.
Any ideas? I seem to remember reading somewhere that Samsung devices occasionally had wifi problems, but don't know if that applies to this issue.
Any help would be appreciated. Thank you.

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