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Wifi reconnection problem.

I just got a Tmobile galaxy tab refurb, and when ever the tab is in sleep mode for over an hour and I turn it on the tab won't connect to my router. I wold have to turn off my wifi and then turn it back on for it to connect. Any works around this?

Go ti settings and tell ur tab to never turn off wifi wile sleeping
Sent from my GT-P1000 using XDA App

Are you having reconnection issues with other WiFi devices on your network? Because this is usually a Wifi/router problem. I don't think it has anything to do with your galaxy tab.
Sent from my GT-I9000 using XDA App

I have the same problem and extremely unstable wifi performance and it looses connection even with very good reception. I havea netgear 3300 router with both 2.4 and 5 kHz networks and the only device that works badly is the tab. I have 20+ other devices with no problems at all of which 4 are other android devices.
I live in an area with 15-20 other wifi networks and perhaps it would help to disable all other networks but the settings for wifi is very basic and not many options exist. I have a DBT device with stock JMG FW.

JMG/JMF problem. I had none of this issue while my firmware was JK5. Now it sucks and still waiting for Gingerbread to come to Kies.

SAME PROBLEM WE HOPE IN GINGERBREAD

Wifi issues

So I'm having Wifi Connection issues on my Mile stone. I'm running the Lastest STABLE version from Miui.us. Problem is I can connect but within a min or two of connection it looses connection and says wifi out of range even if Im standing right next to it. If I forget the connection and restart my router it will find it and connect again and do the same thing. I've tried my cousins Samsung Vibrant on my wireless router and he doesn't have any issues so I know its not the router itself. Any Idea's on how to fix this guys?

TaintedCross said:
So I'm having Wifi Connection issues on my Mile stone. I'm running the Lastest STABLE version from Miui.us. Problem is I can connect but within a min or two of connection it looses connection and says wifi out of range even if Im standing right next to it. If I forget the connection and restart my router it will find it and connect again and do the same thing. I've tried my cousins Samsung Vibrant on my wireless router and he doesn't have any issues so I know its not the router itself. Any Idea's on how to fix this guys?
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Click to collapse
I've had some success with changing the wifi sleep policy in the advanced tab of the WiFi settings.
Sent from my Milestone using xda premium

skadude66 said:
I've had some success with changing the wifi sleep policy in the advanced tab of the WiFi settings.
Sent from my Milestone using xda premium
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Pretty much solved the issue, never even thought about it. Thanks.

skadude66 said:
I've had some success with changing the wifi sleep policy in the advanced tab of the WiFi settings.
Sent from my Milestone using xda premium
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Click to collapse
Gonna give this a try. Thanks! Hope it works, the latest (1.9.9) is so stable and fast its unbelievable.

osmanzeki said:
Gonna give this a try. Thanks! Hope it works, the latest (1.9.9) is so stable and fast its unbelievable.
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Click to collapse
Isn't 1.9.9 beta?

TaintedCross said:
Isn't 1.9.9 beta?
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Click to collapse
Yeah, 1.9.9 is a beta development build, but he's just remarking how stable it really is.

Hi, I have the same problem with WIFI, I cahanged the slep policy, and when I activate Wifi it's starting scanning for nothing, no wifi Network appears and when I can connect, after a whie it's disconnecting itself and doesn't reconnect. Somebody knows the problem?..I'm using MIUI android v1.9.9

I'm not sure, I updated to 1.9.16 and I'm having some issues with mine but not as bad. The weird thing is wifi won't work if the mobile data network is enable, when i turn that off my wifi will connect but if i get even like 10 feet away from the router it starts having connection issues and sometimes when im right next to it. But no where as bad as it was before.

[Q] Any Issues with WiFi

Loving the phone really, one thing i have noticed is when ever im downloading or uploading large files through my home WIFI after a short period the phone disconnects from the network and i have to reconnect manually. Any ideas is anyone else having the same issue. All my other devices are fine

Same thing here, but it reconnects itself - just losing the connection for 1-2 seconds. It happens sometimes even when browsing the web. Most likely some kind of software bug.

Had similar symptoms when playing with the phone at work`s WiFi (1st day of usage). On my home WiFi nothing wrong at all.

Make sure that keep WiFi on during sleep is always.
Or the WiFi will turn off the moment u turn the screen off
Sent from my C6602 using xda app-developers app

abd_alazeez2002 said:
Make sure that keep WiFi on during sleep is always.
Or the WiFi will turn off the moment u turn the screen off
Sent from my C6602 using xda app-developers app
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Click to collapse
Yeah checked that it happens even with the screen on. i got the screen to stay awake when charging and usually download my big files the i gave up trying to download A Bards Tale last night.

marcgear said:
Loving the phone really, one thing i have noticed is when ever im downloading or uploading large files through my home WIFI after a short period the phone disconnects from the network and i have to reconnect manually. Any ideas is anyone else having the same issue. All my other devices are fine
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Click to collapse
it happens sometimes in s3, s2, xS and etc
it s a bug and will repair by software update or flashing another rom/firmware by urself if know wht to do.

abd_alazeez2002 said:
Make sure that keep WiFi on during sleep is always.
Or the WiFi will turn off the moment u turn the screen off
Sent from my C6602 using xda app-developers app
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Click to collapse
I found that WiFi is one of the most power draining things on phones. The best thing would be to switch to mobile data while sleeping and turn wifi off during that time.
That way you can still receive everything, but since you're sleeping you will barely use any data at all.
To bad the phone can't do that automatically.

I'm getting frequent wifi drops in my home (netgear router, wpa psk security) and its also affecting other devices in the house! Other wifi networks I've connected to seem to be fine, no issues whatsoever. Sometimes it'll say its connected, but no data, other times it will disconnect entirely.
This is a VERY strange problem and the fact that its affecting the wifi connection to other devices is even stranger.

Just an update on this, I returned my phone to P4U this morning as the wifi thing was annoying me and the phone has eaten 823mb of mobile data in one weekend even though i had mobile data turned off and connected to WIFI, The handset said i used 115mb and Voda said 823mb. not the only reason i returned it but it needed changing. So got my new handset up and running this afternoon and im set up and i been downloading all my files and apps with out any problems.
So looks like i had a dud phone first time around.

Xperia rebooting fibre broadband gateway???
hanleyco said:
I'm getting frequent wifi drops in my home (netgear router, wpa psk security) and its also affecting other devices in the house! Other wifi networks I've connected to seem to be fine, no issues whatsoever. Sometimes it'll say its connected, but no data, other times it will disconnect entirely.
This is a VERY strange problem and the fact that its affecting the wifi connection to other devices is even stranger.
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Click to collapse
Getting the same problem too. All my other devices (Nexus7, Ipad, PC) can connect fine to my wireless home network (fibre). But when I start connecting my Xperia Z to the wireless network, after 5 mins, my Gateway will hang, and restart itself. Happens all the time without fail as long as I have my phone hooked up to the wireless network.
Anyone else facing this problem?? I'm kinda at a loss now on how to solve it. Tried adjusting settings on my wireless channel too but doesn't seem to help. Any help will be greatly appreciated!!!

xentay said:
Getting the same problem too. All my other devices (Nexus7, Ipad, PC) can connect fine to my wireless home network (fibre). But when I start connecting my Xperia Z to the wireless network, after 5 mins, my Gateway will hang, and restart itself. Happens all the time without fail as long as I have my phone hooked up to the wireless network.
Anyone else facing this problem?? I'm kinda at a loss now on how to solve it. Tried adjusting settings on my wireless channel too but doesn't seem to help. Any help will be greatly appreciated!!!
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Click to collapse
Ok, so i reckon this could be an issue with not having a static I.P address. Gonna change it tonight when I get home and see if the problem is solved. It's either that or it may be trying to connect to a port thats used for something else? Have ports assigned for my Xbox ect. I'm not too knowledgeable about these things so any other suggestions are welcome. Not too many settings on the phone unfortunately so the problem has to be solved using the router I'd say.

hanleyco said:
Ok, so i reckon this could be an issue with not having a static I.P address. Gonna change it tonight when I get home and see if the problem is solved. It's either that or it may be trying to connect to a port thats used for something else? Have ports assigned for my Xbox ect. I'm not too knowledgeable about these things so any other suggestions are welcome. Not too many settings on the phone unfortunately so the problem has to be solved using the router I'd say.
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I have static ip set up since the beginning, and I also have the problems. Only my problem seems to stem from 2.4 GHz/ 5 GHz (if this is even possible). 5 GHz is the preferred one, but this one seems to be out of range sometimes and it switches to mobile data. The 5 GHz is then out of range, while the 2.4 GHz is not. Very strange.

Ive found the Xperia Z has held on to a 5GHz Wi-Fi signal better than any other device I've used before, but the 2.4GHz can often disappear...
Very odd, although at home I am quite happy that 5GHz works better as there's far less interference from local neighbours. Perhaps that's causing the problem - in that the XZ isn't so well set up to cope with other routers on the same Wi-Fi channels??

The reach of my 2.4 GHz is at 75%, while 5 GHz is at 50%??? Strange.

I would always expect 2.4GHz to carry further, and so I am surprised by my experience too.
In my case, there's only 1 5GHz router visible other than mine, but countless 2.4GHz ones. Not sure why that would make the XZ drop (and sometimes even lose) the connection - but that's what seems to be happening.

Xperia Z no wi-fi without SIM
I have a different wi-fi issue with my Xperia Z. It does not connect to my home wi-fi when there is no SIM in the phone. It just says that the network is out of reach. When I pop in the SIM card, it connects automatically. Actually, all the hi-end Sony phones I tried recently do this (Ion, T and more). I've been looking for a solution here on the forum, but didn't find any helpful topic. But maybe I was looking wrong. Does anyone know, what to do?

lvoky said:
I have a different wi-fi issue with my Xperia Z. It does not connect to my home wi-fi when there is no SIM in the phone. It just says that the network is out of reach. When I pop in the SIM card, it connects automatically. Actually, all the hi-end Sony phones I tried recently do this (Ion, T and more). I've been looking for a solution here on the forum, but didn't find any helpful topic. But maybe I was looking wrong. Does anyone know, what to do?
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Click to collapse
I think the obvious answer is put a SIM in there... and if that means getting any old SIM and cutting it to size, even if it's not registered on any network, then do that.
I wonder if it the phone is looking at the SIM to identify the country, and therefore what channels can be used? I say this because when I first used the phone (without SIM) I also had problems [router not showing up in a scan], and my router is on channel 13. I then put in a SIM and at some stage did another scan and it found my router.
Is your router perhaps on channel 11, 12 or 13?
I know it's a long shot, but who knows?

jonmorris said:
I think the obvious answer is put a SIM in there... and if that means getting any old SIM and cutting it to size, even if it's not registered on any network, then do that.
I wonder if it the phone is looking at the SIM to identify the country, and therefore what channels can be used? I say this because when I first used the phone (without SIM) I also had problems [router not showing up in a scan], and my router is on channel 13. I then put in a SIM and at some stage did another scan and it found my router.
Is your router perhaps on channel 11, 12 or 13?
I know it's a long shot, but who knows?
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Interesting point, will try to investigate with the channels. And I may also try to dig out some inactive SIM, thanks for the tip... The only thing I found is, that the problem obviously appears only with the WPA2-PSK security. With WPA, its all a-OK...

If you look inside the build.prop
The wifi.channel is not assigned,maybe this can gives you an idea guys.
Sent from my C6602 using xda premium

My 2.4GHz has autochannel and 5Ghz is @ 44.

Wifi connecting... saved... obtaining ip address... saved

I'm wondering if anyone running either cm 10 or Pac roms is having issues after a few weeks, of wifi attempting to connect then saying saved and doing that over and over again and not connecting. I know other people not necessarily using this phone have had this issue before but, I can't seem to find any solutions to the problem. I am currently running Pac all in one Rom and it was working great until today but, I have had these issues on cm 10 before and the only thing that seems to fix is to flash a new Rom and I like this one and don't want to re-flash.
Sent from my MB886 using xda app-developers app

Mine was doing that but a dirty flash fixed it and I still have all my settings.
Sent from my PACMAN MATRIX HD MAXX

For me It is doing this on stock sometime.
Sent from my MB886 using xda premium

Hogman500 said:
I'm wondering if anyone running either cm 10 or Pac roms is having issues after a few weeks, of wifi attempting to connect then saying saved and doing that over and over again and not connecting. I know other people not necessarily using this phone have had this issue before but, I can't seem to find any solutions to the problem. I am currently running Pac all in one Rom and it was working great until today but, I have had these issues on cm 10 before and the only thing that seems to fix is to flash a new Rom and I like this one and don't want to re-flash.
Sent from my MB886 using xda app-developers app
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Click to collapse
I always get this issue on custom ROMs
Sent from my MB886 using xda premium

I've been having this issue as well, again and again.. I've had about a 50/50 success rate with dirty flashing. Anyway, I believe the problem has something to do with the dhcp assigned ip addresses from the router. It's something on the phone side of it because changing dhcp settings,lease times etc., on the router have no effect. When you lose WiFi and it goes into that loop and won't connect, go into WiFi settings, and forget your network. Then select your network again and enable the advanced settings. Change from dhcp to static and then assign yourself a local IP. I have a Linksys router so I entered 192.168.1.8 . so I believe a netgear router would be 192.168.2.?? , the ?? or 8 being whatever is unused on your network. If you haven't already, enter your password and connect. I connected immediately after that. I understand this isn't really a "fix" because won't help you when trying to connect to networks that you can't assign your own IP, like say Starbucks or somewhere.. But hopefully this may point someone who knows more about this stuff in the right direction to actually fix whatever is off in the phone. Drivers maybe? Hope this helps!
Sent from my MB886 using xda premium

Thank you for the explanation I tried a dirty flash and that solves it for about 12 hours. I am getting faster at flashing and restoring everything and am now flashing a new Rom every couple of days so it's not that big of a deal I'll just take it as a sign I should try a new Rom I'm now running the unofficial aokp Rom and I'm liking it next time it happens I'll just try another. Thanks for all the help glad to know the issue isn't because I've done something wrong.
Sent from my MB886 using xda app-developers app

MrGrinch88 said:
I've been having this issue as well, again and again.. I've had about a 50/50 success rate with dirty flashing. Anyway, I believe the problem has something to do with the dhcp assigned ip addresses from the router. It's something on the phone side of it because changing dhcp settings,lease times etc., on the router have no effect. When you lose WiFi and it goes into that loop and won't connect, go into WiFi settings, and forget your network. Then select your network again and enable the advanced settings. Change from dhcp to static and then assign yourself a local IP. I have a Linksys router so I entered 192.168.1.8 . so I believe a netgear router would be 192.168.2.?? , the ?? or 8 being whatever is unused on your network. If you haven't already, enter your password and connect. I connected immediately after that. I understand this isn't really a "fix" because won't help you when trying to connect to networks that you can't assign your own IP, like say Starbucks or somewhere.. But hopefully this may point someone who knows more about this stuff in the right direction to actually fix whatever is off in the phone. Drivers maybe? Hope this helps!
Sent from my MB886 using xda premium
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Sadly it doesn't work for clear wireless modems/routers.
Sent from my MB886 using xda premium

TTLayland said:
Sadly it doesn't work for clear wireless modems/routers.
Sent from my MB886 using xda premium
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Click to collapse
having same problem from same router

chiikko561 said:
having same problem from same router
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Is there anyway to fix this issue yet?

@TTLayland said exactly what I'd say...static IP. I'll add the the Devs are working on updated WiFi drivers for the kernel. When that's ready hopefully that'll work for ya'll. I haven't had any WiFi issues for the past few weeks. Connected to my House, McD's, and the hospital.
Post the actual make & model of your router and I/we'll see what can be found for it.
Also, try setting the phone to 2.4 Ghz only...my old router was 2.4ghz and the auto setting would randomly kick me. New router broadcasts in both 5ghz and 2.4ghz, I connect to the 5ghz one and use auto without issue.

skeevydude said:
@TTLayland said exactly what I'd say...static IP. I'll add the the Devs are working on updated WiFi drivers for the kernel. When that's ready hopefully that'll work for ya'll. I haven't had any WiFi issues for the past few weeks. Connected to my House, McD's, and the hospital.
Post the actual make & model of your router and I/we'll see what can be found for it.
Also, try setting the phone to 2.4 Ghz only...my old router was 2.4ghz and the auto setting would randomly kick me. New router broadcasts in both 5ghz and 2.4ghz, I connect to the 5ghz one and use auto without issue.
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Click to collapse
a lot of the times I have to log into my router and turn the security completely off and then log on with my phone get a connection and then log back into my router turn the security back on and then I'm good to go.
Kinda like the flashing back to ICS to get a GPS lock to work on custom jb ROM's
Sent from my MB886 using xda premium

skeevydude said:
@TTLayland said exactly what I'd say...static IP. I'll add the the Devs are working on updated WiFi drivers for the kernel. When that's ready hopefully that'll work for ya'll. I haven't had any WiFi issues for the past few weeks. Connected to my House, McD's, and the hospital.
Post the actual make & model of your router and I/we'll see what can be found for it.
Also, try setting the phone to 2.4 Ghz only...my old router was 2.4ghz and the auto setting would randomly kick me. New router broadcasts in both 5ghz and 2.4ghz, I connect to the 5ghz one and use auto without issue.
Click to expand...
Click to collapse
Ok, I didn't realize Devs were working on it. I have statics set for my home, but being a Network Admin I travel to many different networks and because of the way our network transverses settinig an ip is not an option as the same SSID is used for about 95 different sites. So DHCP is a must.
I just thought it was strange that the Carbon rom I am using was working for about 2 weeks correctly then stopped connecting, sometimes a reboot will get it to connect.
Thanks.

I wish it would work I just gave up on wifi on ahd if using custom rom
Sent from my MB860 using xda app-developers app

LeGenDz R3DeaDz said:
For me It is doing this on stock sometime.
Sent from my MB886 using xda premium
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*shivers* I remember that.... What I used to do is just reboot my phone.
Sent from my PACman Atrix HD using XDA Premium

WiFi Problems, help!

So for about a week now, I've been having horrendous wifi issues on my device running CM 10.1 nightlies. My problem being that my phone will remain connected to wifi but no actual connection is present. It's very sporadic and highly annoying. After the problem occcurs, it still says i am connected but i can't actually access the internet.. Temporarily disabling wifi and re enabling fixes it for a couple minutes then it happens again. I'm pretty sure it's not a hardware issue as i can use my school wifi for an entire day without disconnects or anything but i can't get mine to work. I've tried carbon rom, diff nightlies, clear data+ cache but nothing works. This also happened on an xperia running CM (my dads). Any solution??

juanacevedo said:
So for about a week now, I've been having horrendous wifi issues on my device running CM 10.1 nightlies. My problem being that my phone will remain connected to wifi but no actual connection is present. It's very sporadic and highly annoying. After the problem occcurs, it still says i am connected but i can't actually access the internet.. Temporarily disabling wifi and re enabling fixes it for a couple minutes then it happens again. I'm pretty sure it's not a hardware issue as i can use my school wifi for an entire day without disconnects or anything but i can't get mine to work. I've tried carbon rom, diff nightlies, clear data+ cache but nothing works. This also happened on an xperia running CM (my dads). Any solution??
Click to expand...
Click to collapse
So the issue is on the router side, do you have a dual band router? if so make sure 5ghz is up and running. If you have a single band router thats capable of 5ghz, make sure all you wireless devices are capable of 5ghz freqency and if so switch it over.
Also Ive fixed this/ or similar issues on networks by disabling QoS in the router settings, id recommend disabling it and see if it helps

JoinTheRealms said:
So the issue is on the router side, do you have a dual band router? if so make sure 5ghz is up and running. If you have a single band router thats capable of 5ghz, make sure all you wireless devices are capable of 5ghz freqency and if so switch it over.
Also Ive fixed this/ or similar issues on networks by disabling QoS in the router settings, id recommend disabling it and see if it helps
Click to expand...
Click to collapse
The strange thing is I haven't changed any router settings at all and before last week I've had absolutely no issues with wifi. Now it seems I can't keep a connection for more than a couple minutes max. Also, sometimes (not always) I'll try connecting to a different router or access point and it'll connect and the next second it'll instantly disconnect. I'll try your suggestion and hope it works
Sent from my LG-P880 using xda app-developers app

Didn't work. Anyone else?
Sent from my LG-P880 using xda app-developers app

juanacevedo said:
Didn't work. Anyone else?
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
Just restarting the device works for me, using eternity project kernel stock version, I don't know for CM though, try installing latest nightly and install a custom kernel, most of them are better than stock CM kernel

ottomanhero said:
Just restarting the device works for me, using eternity project kernel stock version, I don't know for CM though, try installing latest nightly and install a custom kernel, most of them are better than stock CM kernel
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Click to collapse
The problem went away after a week. Weird issue with the router or something.
Sent from my LG-P880 using xda app-developers app