Hi all.
Has anyone any issues when wifi reconects to the network??
Im using internet commander to control wifi and save battery but when the screen turns on it takes about 20 to 30 seconds to reconect, it seems slow obtaining ip address, iv checked it without internet commander and the same thing.
I remember the desire was more or less instant when reconnecting.
So is it normal? anyone the same as me?
any advice ideas grateful
thanks
I only use WIFI at home so when its on its on no sleep(from the advanced wifi settings), ie its on 100% of the time.
Related
Following on from my investigations on why the SGS2 takes *so" long to re-establish a WiFi connection, it now seems part of the problem is a major delay in obtaining an IP address.
In another thread (I forget which one) it was suggested that slow WiFi could be caused by a router not being able to cope with 802.11b, g & n traffic at the same time, which got me thinking - what if I disable the n part of the WiFi on the phone to revert it to 802.11g - would this make acquisition time on an older router faster?
So - does anyone know which file / script etc. could be altered to keep WiFi enabled, but ONLY at 802.11g; not utilising 802.11n?
stuclark said:
Following on from my investigations on why the SGS2 takes *so" long to re-establish a WiFi connection, it now seems part of the problem is a major delay in obtaining an IP address.
In another thread (I forget which one) it was suggested that slow WiFi could be caused by a router not being able to cope with 802.11b, g & n traffic at the same time, which got me thinking - what if I disable the n part of the WiFi on the phone to revert it to 802.11g - would this make acquisition time on an older router faster?
So - does anyone know which file / script etc. could be altered to keep WiFi enabled, but ONLY at 802.11g; not utilising 802.11n?
Click to expand...
Click to collapse
Just a guess, but is likely a build.prop tweak
Is this a frequent problem ? Has never happend here
Sent from my GT-I9100 using XDA App
As I've said in my post on the general forum, I get a horrible delay every time I ask the phone to connect WiFi.
I've got the WiFi sleep policy set to "when screen turns off" to save battery power; and using the same router as on my SGS (hell, i can sit the phones next to each other to try this) I get the following:
Waking the SGS up from a sleep results in a delay of 1 or 2 seconds before WiFi connects.
Doing the same with the SGS2 results in a delay of up to 1 minute before WiFi will connect. (sometimes it can be seen to give up trying to acquire an IP address, then try again)
...so yes, may be a router issue, but clearly there's something different between the 2.3.3. on the SGS versus the 2.3.3 on the SGS2 as well.
You could just disable n mode on your router if you think mixed mode is slowing it down. Most new routers will let you choose which wifi modes to broadcast via their web interface. The best option would be to only use n if all your devices support n.
Sent from my GT-I9100
Router only supports g. I'm suspecting the phone looks to n first, hence my interest in disabling it.
stuclark said:
As I've said in my post on the general forum, I get a horrible delay every time I ask the phone to connect WiFi.
I've got the WiFi sleep policy set to "when screen turns off" to save battery power; and using the same router as on my SGS (hell, i can sit the phones next to each other to try this) I get the following:
Waking the SGS up from a sleep results in a delay of 1 or 2 seconds before WiFi connects.
Doing the same with the SGS2 results in a delay of up to 1 minute before WiFi will connect. (sometimes it can be seen to give up trying to acquire an IP address, then try again)
...so yes, may be a router issue, but clearly there's something different between the 2.3.3. on the SGS versus the 2.3.3 on the SGS2 as well.
Click to expand...
Click to collapse
quick side note, wifi sleep policy set to NEVER saves you much more battery power because when it switches over to 3g, 3g uses way more power than just leaving it on wifi. counter intuitive but true.
Have you tried hard coding an IP address on the S2?
And by Hard coding, he means manually setting a Static IP address and now allowing the DHCP to provide you an IP address each time. Although the IP will most likely be the same while using DHCP, it has to request and authenticate each time. Setting a Static IP address eliminates the process of "Asking" for a IP address each time.
when the phone scans and finds the ssid, as part of that scan it checks if the router supports b/g/n then will try to connect at the highest speed. If the router isnt n compatible it wont even try.
I don't want to give the phone a static IP as I regularly visit three or four different wireless networks and they don't all use the same IP range.
I do know how DHCP works, this isn't a newbie question.
It seems definite now, watching the phone, that it tries to connect once (presumably on n), fails, then re-connects (quickly) on g.
Of course, I'll be changing the router eventually; I'm just interested in what's going on first
stuclark said:
I don't want to give the phone a static IP as I regularly visit three or four different wireless networks and they don't all use the same IP range.
I do know how DHCP works, this isn't a newbie question.
It seems definite now, watching the phone, that it tries to connect once (presumably on n), fails, then re-connects (quickly) on g.
Of course, I'll be changing the router eventually; I'm just interested in what's going on first
Click to expand...
Click to collapse
Understand about leaving it set for DHCP. Trying a fixed IP as a test may tell you if DHCP is part of the delay. If the b/g/n search is that slow it would be useful if it could be configured more precisely.
Have you tried it using another router using only g? If n is available it connects quickly? Seems like others would have mentioned this if it is something with the phone as g-only networks are still common.
I too am interested in disabling 802.11n. wpa_supplicant keeps hanging on some wifi networks and I suspect it may be because of n.
Is anyone else experiencing the wifi settings to crash? My wifi works fine for a few minutes but suddenly I lose signal and when I go to wireless and network settings, it crashes and I am out of signal. Anyone know of a solution for this?
Thanks!
Have you tried Regpon?
Also, I've had success with this simple task:
In Wi-Fi settings, "forget" the router you're trying to connect to. Then shut off Wi-Fi.
Wait 10 seconds or so then turn Wi-Fi back on.
I found this workaround when searching for Wi-Fi problems on this board. No problems, now. If you get a FC for Settings, select "wait" until you've successfully gotten the settings to "forget" the connection and until you've got Wi-Fi shut down.
thepza said:
Have you tried Regpon?
Also, I've had success with this simple task:
In Wi-Fi settings, "forget" the router you're trying to connect to. Then shut off Wi-Fi.
Wait 10 seconds or so then turn Wi-Fi back on.
I found this workaround when searching for Wi-Fi problems on this board. No problems, now. If you get a FC for Settings, select "wait" until you've successfully gotten the settings to "forget" the connection and until you've got Wi-Fi shut down.
Click to expand...
Click to collapse
I tried this but still continues =/
In my case I tried to "forget" the WIFI password setting to access to the router, and restart your touchpad, and when finished booting the WIFI is back to normal then
The only inconvenient thing is you have to "forget" the password every time you shutdown or restart your touchpad.....
I think the reason for this wifi problem is that wifi's channel cannot be set up normal, I have seen it in my advanced setting of wifi, there are only three channels available for me to choose, which are 11 12 and 14.......
Also make sure you have your date, time and time zone set in settings.
When i downloading torrents using my android phone over the WiFi, its connection lost several times. My phone WiFi policy is "Keep WI-Fi on during sleep" as "Always". I use "Ttorrent" app client. Most of the time Ttorrent display "No suitable network" error. If i turn on the screen, problem not fix.
I have android 4.0.3 ROM and i connected my phone into my ADSL router, not a public.
Are there any solution for me?
Thanks!
Did you rule out the signal strength and wifi network quality? It might just be that the connection is flaky. One way to test is just sitting close to the access point or.. to change it to a different channel (when you suspect interference from neighbor routers is the issue)
nheinen said:
Did you rule out the signal strength and wifi network quality? It might just be that the connection is flaky. One way to test is just sitting close to the access point or.. to change it to a different channel (when you suspect interference from neighbor routers is the issue)
Click to expand...
Click to collapse
Thanks friend your reply!
If I move my phone close to the router, its not fix. Also its possible affect, my neighbors Wi-Fi connections (because of the distance of neighbor houses, to my place). Is it a effect of my router settings?
Sent from my WT19a using Tapatalk 2
Is there an option in your client to lower the maximum number of connections? That's a recommendation from the developers of adownloader, which is what I use
I am having the same problem.
I've tried so many things, on the phone and router.
Nothing has solved it.
I've adjusted a lot of settings on the router which have made no difference, I've used different types of security, wep, wpa, wpa2, no security at all. Static ip, changed dhcp lease times etc
On the phone I've tried setting a static ip, flashing different kernels, using different torrent clients, lowering number of global connections to 1 etc
I've also tried a few apps from the play store, wifi fix, wifi static etc
The wifi will just randomly disconnect when I download any torrent, there is no pattern to it but I can't download any torrent without disconnecting.
I would love to know a fix.
I'm using a galaxy s3
One thing I want to try is a different router to rule out whether the problem is the router side or the phone side.
At the minute I have no idea what is causing the issue.
I don't get disconnected when browsing the web etc on my phone.
If I use my pc or laptop to download torrents I don't get disconneted.
Ok I've finally worked out why I was getting drop outs.
For some reason when I use wpa2 with aes ecryption I get disconnected when downloading torrents.
When I use wpa and tkip I get no disconnects at all.
It's not a good solution as I get slower speeds using wpa and tkip but at least I don't get disconnected.
I wonder if this will be fixed?
This is an ICS bug. No matter what you have your wi-fi sleep policy set to, when the screen goes off the performance drops drastically. Download the Wi-Fi High Performance Widget from the market. When tap to enable the widget, your wi-fi will run at 100% performance no matter your screen state.
This isn't a sleep issue though. I have wifi set to always on keep wifi on during sleep.
Even the op said he tried leaving the screen on.
I set screen timeout to 10 minutes so I can monitor the application and also set screen on within adownloader and I get disconnected.
The only fix for me is using wpa and tkip encryption.
As soon as I use wpa2 and aes encryption I get disconnections when downloading.
gs3 said:
This isn't a sleep issue though. I have wifi set to always on keep wifi on during sleep.
Even the op said he tried leaving the screen on.
I set screen timeout to 10 minutes so I can monitor the application and also set screen on within adownloader and I get disconnected.
The only fix for me is using wpa and tkip encryption.
As soon as I use wpa2 and aes encryption I get disconnections when downloading.
Click to expand...
Click to collapse
Well, probably a hardware issue. I have no issues using the same wifi configuration and downloading torrents. And like I said..it really doesn't matter if you have keep wi-fi on during sleep checked. That doesn't matter at all. The performance will degrade so much when the phone is asleep that you might as well have it turned off. No, your wi-fi won't sleep, but it won't be running anywhere near its top performance, which is what the widget is for.
Wow. I have been trying to solve the same problem for last 2 weeks. upgraded windows drivers, router firmware, tweaked utorrent settings and whatnot. finally after reading your answer i changed my wifi authentication from wpa2+aes to wpa+TKIP and WOW. it worked. my wifi is not dropping anymore. I dont why WPA2+AES should cause this problem. BUt this tweak in authentication has finally worked for me.
Hi,
I just set up a VPN connection with my Galaxy Nexus to my Router at home. It works but I realized that the connection drops at some point. This is quite annoying because I want to use it as a security measure when staying at hotels and using their open WiFi. But when the VPN drops at some point and the WiFi stays connected this does not really make sense because my phone will keep sending data.
Is there anything I can do? Why disconnects the VPN at some point?
Can I at least tell the WiFi to cancel when the VPN drops?
Thank you!
I have purchased a Alcatel Onetouch Idol X+ very recently and I am facing this problem of slow DNS lookup when connected to WiFi. When I am using WiFi and trying to browse any website it always taking 20-40 seconds to start show up any content. Later I realized that problem is not there when I am using directly IP address of an website instead on domain name. So, this must be an issue with slow DNS lookup. I have tried setting google DNS servers (8.8.8.8 and 8.8.4.4) in WiFi connection setting, but it is of no help.
To crosscheck this I used 'terminal emulator' to ping any website, what is see is that, always for resolving the domain dame it take 15-20 second time, then ping continues normal, similarly when I use any website IP to pinged there is no such issue.
Interestingly I found that sometimes when I connect to wifi then restart the phone, after that all browsing works fine and fast, but as soon as I change WiFi to another connection or turn wifi off-on, then again problem start to appear.
I have checked with few other phone connected to same WiFi connection, those are not at all having any such issue.
Can any one please tell any solution to this??
Android version is 4.2.2,
WiFi connection (which I am using) speed is more than 10mbps.
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This is exact copy of this post as suggested to me
http://forum.xda-developers.com/general/xda-assist/to-problem-dns-lookup-android-t2803047