Hi,
I've tried disabling WIFI powermode (which I do everytime I reboot), but my wifi seems pretty flaky. Speed is great, but it sometimes disconnects (not THAT often).
I have two APs, both set on same channel / SSIDs etc. Looking at wifi analyzer, it seems like the phone doesn't really handle switching between APs very well.
Is there a kernel or mod that would help with that? Or perhaps a better way to set my APs? (DD-WRT and Tomato, all 2.4G). Should I try the modems or is that just for cell network performance?
Especially annoying when using Talkatone or Skype to phone someone and then it drops in the middle of a call.
Thank you!
Setting to AP's within range of each other to the same frequency is asking for trouble.
Having them both broadcast the same SSID more so.
The kernel handles Wifi-related stuff, modem is only for cell communication.
Wifi has no handover protocol such as 2G/3G/4G does, so you'll stay connected to an AP until you loose the connection and then reconnect through the whole connection protocol (including Handshake, Authentication, DHCP, ...) on the next one. So it's a pretty bad protocol for moving around with a constant data stream.
I was under the impression I HAD to have them use the same SSID since this AP is there to extend the range of my home wifi (as per: dd-wrt WAP website I can't post link to since I'm a noob), I'll try setting them to channels 1&11 see if it gets better...
I had issues at work. But not at home.
Today I told it to forget my B/G radio and to connect to the N radio. No disconnects, none..
No changes made to the phone at all..
Related
Hi
I have Wireless internet at home with 2 available access points, for some strange reason, my Hero (T-Mobile) insists on connecting to the weaker signal, even if I try changing it to connect to the stronger signal, it re-connects to the weaker signal then disconnects and connects back to the stronger signal, I have reset the phone to factory default as I had other issues with it but this does not seem have resolved the wifi issue, any ideas?
p.s. if we can avoid the "use the search button" that would be good
T-Mobile G2 Touch
Firmware 1.5
Baseband Version: 63.18.55.06FU_6.35.07.08
Build: 2.73.110.26 CL#69351
Software Version: 1.0.0.A6288
I think there may be apps in the market to help this issue.
Search the market for Wifi and see what you get.
Sorry can't be more specific as I don't have this problem myself.
I have tried that before, most of the apps seem to be either a wifi switch (on/of) or a wifi scanner,
thanks for the response
The problem could be wireless interference or other issues with the wifi router. The stronger signal (I'm assuming this is your own wireless router) may drop its signal, if only for an instant, due to wireless interference or other issues, causing the phone to switch to a more stable, albeit weaker, signal.
The first thing I would do is try changing the wireless channel on the router. 99% of routers default to channel 6. If there are several wifi signals in your area, open or secured, there's a good chance most of them are on channel 6. I'd suggest channel 11 myself, but you can try any of them.
If changing the channel doesn't work, you can try adjusting the more advanced settings, such as setting it to 11g-only instead of b/g. Other settings you could adjust are:
- DTIM Interval
- Beacon interval
- CTS protection
- RTS threshold
- Frame burst
- Preamble type
- Authentication type
Of those advanced settings, I would go for preamble type first, as it's the safest to play around with if you don't know what you're doing. As far as the other advanced settings, I'd do a google search to figure out what they mean before messing with them too much. I could explain them all, but I'm not here to write an essay
Note: Not all routers allow you to change all of these settings. Particularly cheaper routers will have far fewer advanced options than what I've listed here.
Hope this helps!
thanks for that, ill try changing it to channel 11 and try again, when i dop a wifi scan, it picks up about 7-8 different secudred AP's so it may well be the interference,
thanks muchly
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.
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.
When I had my EVO 4G I had no WIFI issues at home or work. When I got the EVO 3D I had serious issues with WIFI (at home only) and I kept blaming the phone. Well after turning some options off (like turbo boost) and playing with bandwidth settings) EVO 3D became solid.
Now EVO 4G LTE is having WIFI issues. I had started a thread using 2.4Ghz for WIFI which was a huge help. But it's still not quite right. You can see it frequently flipping between WIFI and 3G. The phone again works fine at work. If I have to I'll buy the same wifi routers I have at work.
So I started digging into Router settings again and noticed this "WIFI Coexistence" option (which was set as disabled).
So I researched it on the dd-wrt.com web site (the open source I run on my router and found some interesting info).
I think this may have something to do with some folks issues.
It may also account for why some people say they have no problem and others do.
Even when you swap your phone your Bluetooth devices might choose a different channel when you pair it and have less conflicts. On old WIndows phones even when you unpaired it, it would cache the old channel and use it again if you repaired it.
I'm going try this option and try running with bluetooth off and see if it's more stable.
I have had bluetooth issues as well. Mainly after a call, the would disconnect from headset and headset could not reconnect without toggling bluetooth on the phone or headset (or both).
This is a copy of what I found on dd-wrt.com
==================================
I found a clear answer on TomatoUSB's website:
Bluetooth Coexistence
An 802.11 device and Bluetooth can interfere with each other when the 802.11 device operates on the 2.4 GHz band. All Bluetooth devices operate at the 2.4 GHz band. If you experience wireless disconnects, decreased range or speed, and other connectivity issues when you turn on some of your Bluetooth devices, try to change this option to "Enable" (this will make the router and Bluetooth device to take turns in using the spectrum for communication) or "Preemption" (the router will inform the Bluetooth device about the channel it is operating on, and the Bluetooth device can preemptively disable communication on the respective Bluetooth channels).
Please note that this option requires your Bluetooth device to "cooperate". If the Bluetooth device doesn't implement the coexistence techniques, using this option will have no effect.
I'm 99.99% sure it's bluetooth causes WIFI issues for me.
If your having WIFI issues (which interferes with 3G as well) and you normally keep bluetooth on.
Try as simple experiment leaving bluetooth off (I know you should not have to).
I left mine off today and data was flawless.
Switching between 3G and WIFI was instant and smooth.
When I wake it I see it jumping around between 3G and WIFI.
This phone uses a Qualcomm bluetooth stack and EVO 3D and EVO 4G used broadcomm.
I never even thought to consider bluetooth.
Bluetooth has been bumpier on this phone as well.
If I leave WIFI off, bluetooth runs perfect.
I need more data though to sort this out.
I always leave Bluetooth off when at home, its only on when my phone is in the car dock. But I still couldn't even get through a speed test without wifi disconnecting completely and the test failing.
Ironically, I do not have a single drop out when at work, only at home.
I set Bluetooth Coexistence in my router's settings to Preemptive and so far (5 minutes) so good (I do have other bluetooth devices in the house).
Will report back after further testing.
Oddly, no other devices in my house have ever had this problem, so there is still something funky with the new Evo. But luckily with all these software fixes having varying success with people, it doesn't look like a hardware issue.
Still not a single drop out that I've noticed.
I'll know for sure in the morning. My Titanium Backups to dropbox have failed every.single.night with this phone due to wifi dropping connection in the middle of the upload. We'll see if they complete tonight.
Looking positive.
modplan said:
Still not a single drop out that I've noticed.
I'll know for sure in the morning. My Titanium Backups to dropbox have failed every.single.night with this phone due to wifi dropping connection in the middle of the upload. We'll see if they complete tonight.
Looking positive.
Click to expand...
Click to collapse
Awesome. Thanks for the update.
I agree it's odd this Device is stirring up the issues.
But it could be something as dumb as they scan for available bluetooth channels in a different order and tend to hit channels that conflict with WIFI.
Most WIFI I think is on channel 11. I have mine on channel 11 as it seems teh best compromise for the many WIFI devices I have so I didn't want to change it.
So folks migh thave more flexibilty, and just changing WIFI channel can make quite a change.
I'll have to check work, what channel it's on. I'm pretty sure it's not on channel 11 because we have multiple access points and we wanted teh channel non overlapping. So we have them set at both end of teh range if I recall.
That could be a hint as well.
mswlogo said:
When I had my EVO 4G I had no WIFI issues at home or work. When I got the EVO 3D I had serious issues with WIFI (at home only) and I kept blaming the phone. Well after turning some options off (like turbo boost) and playing with bandwidth settings) EVO 3D became solid.
Now EVO 4G LTE is having WIFI issues. I had started a thread using 2.4Ghz for WIFI which was a huge help. But it's still not quite right. You can see it frequently flipping between WIFI and 3G. The phone again works fine at work. If I have to I'll buy the same wifi routers I have at work.
So I started digging into Router settings again and noticed this "WIFI Coexistence" option (which was set as disabled).
So I researched it on the dd-wrt.com web site (the open source I run on my router and found some interesting info).
I think this may have something to do with some folks issues.
It may also account for why some people say they have no problem and others do.
Even when you swap your phone your Bluetooth devices might choose a different channel when you pair it and have less conflicts. On old WIndows phones even when you unpaired it, it would cache the old channel and use it again if you repaired it.
I'm going try this option and try running with bluetooth off and see if it's more stable.
I have had bluetooth issues as well. Mainly after a call, the would disconnect from headset and headset could not reconnect without toggling bluetooth on the phone or headset (or both).
This is a copy of what I found on dd-wrt.com
==================================
I found a clear answer on TomatoUSB's website:
Bluetooth Coexistence
An 802.11 device and Bluetooth can interfere with each other when the 802.11 device operates on the 2.4 GHz band. All Bluetooth devices operate at the 2.4 GHz band. If you experience wireless disconnects, decreased range or speed, and other connectivity issues when you turn on some of your Bluetooth devices, try to change this option to "Enable" (this will make the router and Bluetooth device to take turns in using the spectrum for communication) or "Preemption" (the router will inform the Bluetooth device about the channel it is operating on, and the Bluetooth device can preemptively disable communication on the respective Bluetooth channels).
Please note that this option requires your Bluetooth device to "cooperate". If the Bluetooth device doesn't implement the coexistence techniques, using this option will have no effect.
Click to expand...
Click to collapse
I think you're onto something... If I leave the house and wifi sticks on, then I normally have to reboot phone before I can connect to wifi again. Simply toggling wifi off and on doesn't work.
So on a whim, I turned off bluetooth. Then turned wifi off and back on, and bam! Connected! Hmmmm....
Now with reference to co-existence, that can't be the "fix" because not everyone has access to their router settings (such as at work, hotels, malls, etc.)
WiFi works perfect Bluetooth on the otherhand, haven't tested. But I'm sure works just as fine
Sent from my EVO using xda premium
Just switched from cable to VZ gigabit FIOS internet only. They require you to keep their router in the loop no matter what other devices you might add. Using Fios Router with wifi turned off, connected to Netgear Orbi with two satellites. Mumimo and Beamforming are off at the recommendations of several Fios/Orbi users. Connection is from Fios router lan to internet port on Orbi. I have two satellites because apartment is long and thin with many very thick walls.
LG V10 which works very well but because of location, has to get cell signal from another state across a river. Therefore I use it in wifi mode when at home. When in the middle of a phone call I often lose the call as I move close to another access point (or satellite for Orbi). Have tried SWIFI but it needs each access point to have a "different ID" and I'm not sure what they're referring to. Can't often hold connection. Also tried Wifi Switcher (Cloudie), Wifi Toggle and one or two others.
Suggestions for other apps to try, or other settings? I need to use the router because the cell tower is so far away and I'd really like not to have to stay in one place if possible. Thanks for any and all help.