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wifi problem after ics update p6200

i'm experiencing the following problems after ICS update:
wifi connects only once after booting the device that too for few minutes then neither connect to any network nor scan, and it shows the wifi network not in range, then need to restart the device in order to connect to wifi again
is anyone experiencing the same problem?
is there anyone have any solution for this?
please help me solve this issue!

sivanick88 said:
wifi connects only once after booting the device that too for few minutes then neither connect to any network nor scan, and it shows the wifi network not in range, then need to restart the device in order to connect to wifi again
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+1
Same here.
I did install ICS 4 times (back to HC even) and had the same problem just like you said.
And CSC change from ZTO (Brazil) to KOR (Korea, I think) as Kies shows.
Tried WiFi Fixer from Google Play but no luck. Keep reseting wifi all the time.

Wifi Problem after ICS update
MaskHere said:
+1
Same here.
I did install ICS 4 times (back to HC even) and had the same problem just like you said.
And CSC change from ZTO (Brazil) to KOR (Korea, I think) as Kies shows.
Tried WiFi Fixer from Google Play but no luck. Keep reseting wifi all the time.
Click to expand...
Click to collapse
it looks like no one have found a solution, i've been trying very hard to fix this issue but no use, still the same

GT-P6200L (Brazil) here.

Don't worry guys! We're working on a fix!

I use WIFI Manager for now and it's working for me.

StrumerJohn said:
Don't worry guys! We're working on a fix!
Click to expand...
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thank you so much ~~~~~~

Hi, search for Wifi Fix at playstore. It solved my problem here.
Sent from my GT-P6210 using xda app-developers app

StrumerJohn said:
Don't worry guys! We're working on a fix!
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Click to collapse
Thank you very much!
Could you tell us what is causing the problem?
Could be 3G band (900 or 850 MHZ "L" model) or who knows 2,5 or 5 GHz wifi ap's frequencies... I'd like to know the diagnosis

I have the same problem... :-(
Sent from my GT-P6200 using Tapatalk 2

MaskHere said:
Thank you very much!
Could you tell us what is causing the problem?
Could be 3G band (900 or 850 MHZ "L" model) or who knows 2,5 or 5 GHz wifi ap's frequencies... I'd like to know the diagnosis
Click to expand...
Click to collapse
That's not the problem, I think, because I have a brazilian model P6200L and it works great, wifi is fine, but some people with the same device are having this problem, I've told them to flash the baseband/modem from a brazilian FW and it still not working.

Same problem here in Malaysia. Wifi doesn't work at all for me and it is a big problem since wifi is my primary internet connection at home. When I switch wifi off and on again it detects my home wifi with full bars and when I try to connect it immediately goes Not In Range. I've tried wifi fixer but all it does is constantly resets my wifi which doesn't help at all. I need to downgrade again..

leviathian said:
Same problem here in Malaysia. Wifi doesn't work at all for me and it is a big problem since wifi is my primary internet connection at home. When I switch wifi off and on again it detects my home wifi with full bars and when I try to connect it immediately goes Not In Range. I've tried wifi fixer but all it does is constantly resets my wifi which doesn't help at all. I need to downgrade again..
Click to expand...
Click to collapse
identical problem... i need some help about downgrade to HC.. How?
Sent from my GT-P6200 using Tapatalk 2

I saw someone commenting about using static ip to solve the problem. As in my house I have two routers and in all of them i did set static ips prior to ics i didn't get that wifi problem.
But using dhcp I can reproduce it.
Sent from my MB525 using Tapatalk 2

Doesnt work with static ip. Flash again ics and doesnt work
Any solutions?
Sent from my GT-P6200 using Tapatalk 2

It seems that our ics version of tab is quite picky on the type of wifi router that it would connect. my temporary workaround is to have the wifi channel at the router fix to 1 channel instead of auto..my router is set to 1, seems to solve the wifi problem..you guys should try it..
Cheers

azmi2003 said:
It seems that our ics version of tab is quite picky on the type of wifi router that it would connect. my temporary workaround is to have the wifi channel at the router fix to 1 channel instead of auto..my router is set to 1, seems to solve the wifi problem..you guys should try it..
Cheers
Click to expand...
Click to collapse
My router was set to channel 6, I change to channel 1 and that no solve the problem. I m open from any sugestion... Router is the dlink 54g.
Sent from my GT-P6200 using Tapatalk 2

petrenj said:
My router was set to channel 6, I change to channel 1 and that no solve the problem. I m open from any sugestion... Router is the dlink 54g.
Sent from my GT-P6200 using Tapatalk 2
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I did something similar, I changed the wireless region from Africa to Europe on my wifi router, it seems to help but my wireless stops working sometimes and then just reboots on its own.

I had similar problem with other device, so this thread helped me out:
http://forum.xda-developers.com/showthread.php?t=1445766
this would be usefull as well:
http://forum.xda-developers.com/showthread.php?t=1436683

After root I will bac to the HC and wifi work ok.Again,I flash Austrian ICS and one diferent is here...my CSC code now is EUR,no more KOR.I hope that is a problem.

Wifi bug - connects to network, but not internet

I'm experiencing a bug on my Nexus 5, when I first unboxed my device and setup this problem arise for the first time, problem is Nex 5 is connected to my home wifi network but no internet connection/data transmission !! at that time I tinkered a little bit like forget network and reconnected it then it was fixed, after that this problem rarely appear. Then comes the real problem yesterday I rooted my phone then it wont connect to internet same as before connection is accepted and have full strength signal but not connecting to internet, I've tried rebooting, forgetting and connecting, troubleshooted PC etc but nothing seems to fix the problem !! I double checked my network like I connected my tab with wifi and it's working perfectly fine.
Is this a common/known bug with Nexus 5 ? Or it's just me ? (h/w issue)
Any known fix other than I mentioned ?
Does rooting caused this problem appear more frequently ?
Any response will be highly appreciated.
Thank you

Try connecting to a different network, it may be a compatibility issue. Also try rebooting your router/wireless. If that doesn't work then try restoring factory image.
If none of those options fix it then there could be a problem with your Nexus 5's hardware

Fallon9111 said:
Try connecting to a different network, it may be a compatibility issue. Also try rebooting your router/wireless. If that doesn't work then try restoring factory image.
If none of those options fix it then there could be a problem with your Nexus 5's hardware
Click to expand...
Click to collapse
I'm now flashing factory images, if that doesn't work I'll do a replacement.

I have this issue too, with different WiFi routers.
(Full stock Nexus 5)

Out of intetrest what countries are you connecting in. When I had a Desire HD I had trouble connecting to Turkish routers. Different frequencies? Have you ever connected to your router with an actual connection?

Have yu tried disabling wifi optimzation?
Sent from my Nexus 5 using xda app-developers app

I did tried with each and every option toggled with but still no way.
Sometimes out of nothing it gets ok then goes bad again.
I'm from India and using Teracom router. Funny thing is my tab here working just fine with my home wifi network, I'll try with another wifi network tomorrow.

albertpaulp said:
I'm experiencing a bug on my Nexus 5, when I first unboxed my device and setup this problem arise for the first time, problem is Nex 5 is connected to my home wifi network but no internet connection/data transmission !! at that time I tinkered a little bit like forget network and reconnected it then it was fixed, after that this problem rarely appear. Then comes the real problem yesterday I rooted my phone then it wont connect to internet same as before connection is accepted and have full strength signal but not connecting to internet, I've tried rebooting, forgetting and connecting, troubleshooted PC etc but nothing seems to fix the problem !! I double checked my network like I connected my tab with wifi and it's working perfectly fine.
Is this a common/known bug with Nexus 5 ? Or it's just me ? (h/w issue)
Any known fix other than I mentioned ?
Does rooting caused this problem appear more frequently ?
Any response will be highly appreciated.
Thank you
Click to expand...
Click to collapse
5GHZ or 2.4?
Sent from my Nexus 7

PhilipTD said:
5GHZ or 2.4?
Sent from my Nexus 7
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Click to collapse
2.4 Ghz on my home router.

albertpaulp said:
2.4 Ghz on my home router.
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Click to collapse
Merely rooting the device would have no effect on the Wifi connection. Did you also install a custom rom or kernel?
Sent from my Nexus 7

PhilipTD said:
Merely rooting the device would have no effect on the Wifi connection. Did you also install a custom rom or kernel?
Sent from my Nexus 7
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Click to collapse
Nope I was on stock kernal/rom. It's just wifi problem is now more frequent.

albertpaulp said:
Nope I was on stock kernal/rom. It's just wifi problem is now more frequent.
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Click to collapse
Yeah, so it's a wifi thing. Did you try changing the channel on the router? You can use inSSider to find the best one.
Sent from my Nexus 7

PhilipTD said:
Yeah, so it's a wifi thing. Did you try changing the channel on the router? You can use inSSider to find the best one.
Sent from my Nexus 7
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Thanks a lot, I'm now working on that.

5GHz networking

Has anyone had trouble with connecting to 5GHz networks with the 2012 GT8010?
I've been unable to. I can see the network but always get authentication issues. This occurred with the original 4.1.2 rooms and now with omnirom after a full reset
My other devices such as a laptop and s4 have no issues...
2.4GHz is just fine even to the same router with the same security settings. Disabling security., dropping g down from ac to a doesn't help nor does switching channel
Sent from my unknown using Tapatalk

planetf1 said:
Has anyone had trouble with connecting to 5GHz networks with the 2012 GT8010?
I've been unable to. I can see the network but always get authentication issues. This occurred with the original 4.1.2 rooms and now with omnirom after a full reset
My other devices such as a laptop and s4 have no issues...
2.4GHz is just fine even to the same router with the same security settings. Disabling security., dropping g down from ac to a doesn't help nor does switching channel
Sent from my unknown using Tapatalk
Click to expand...
Click to collapse
I have not had any problems personally. I'm running stock not rooted. I have heard other guys having problems though. Sorry I can't help

If you're rooted (or even just have a custom recovery) check here. Turns out that the wrong WiFi config file is being used in US-based units so 5GHz DFS channels won't always work.

kcrudup said:
If you're rooted (or even just have a custom recovery) check here. Turns out that the wrong WiFi config file is being used in US-based units so 5GHz DFS channels won't always work.
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Click to collapse
thanks. interesting to see if I have issues in those files, but I am actually in the UK in any case.
I tried copying the *mfg* file to *txt* - manufacturing? default perhaps? this had cc=ALL instead of UK, but I figured why not
No difference.....
So followup question - could any UK users post their files from /system/etc/wifi/nvram_net.txt*

planetf1 said:
thanks. interesting to see if I have issues in those files, but I am actually in the UK in any case.
I tried copying the *mfg* file to *txt* - manufacturing? default perhaps? this had cc=ALL instead of UK, but I figured why not
No difference.....
So followup question - could any UK users post their files from /system/etc/wifi/nvram_net.txt*
Click to expand...
Click to collapse
and yes I know the mac code is in there - skip that

Does anyone ever got more than 150 mbps rate ? I mean the connection rate between the tablet and router, not some speed test result. On 5Ghz I get 150, on 2.4GHz no more than 72 mbps. I tried 3 different routers, never got more then 150 mbps, and 60 up/60 down in speed tests.
Sent from my GT-N8010 using Tapatalk 4

KoRoZIV said:
Does anyone ever get more than 150Mbps rate?
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Click to collapse
No, and I wouldn't be surprised if that's intentionally set via the WiFi firmware; the WiFi chip is connected to the Exynos via a 50MHz bus that's 4 bits wide, so your effective thruput wouldn't ever be higher than ~180Mbit/sec anyway.

WiFi 5 Ghz issues

I've noticed whenever I connect to a 5Ghz network, it's complete garbage. At my house, when I connect to 2.4 Ghz I get a consistent speed of around 75mbps, when I switch to 5 Ghz, I can't get more than 20 consistent. Sometimes it works super quick for a second, and then anything I try to do, web surfing, videos, downloading apps etc.... just suddenly stop as if I have no connection and never start again.

No issues here with 5ghz - can only suggest resetting router and phone, otherwise perhaps you have a faulty handset.

Also no problems here. I find the range off the antennas great.
Did several speedtests and no drop outs.

Just got mine and AC 5ghz works great. Getting 235/23 mbs on my home internet.

I have the same issue. Inconsistent connection and slow speeds on 5ghz, only way to fix is a router restart, but then if i turn off WiFi and re-enable, the problem returns. Possible IP issue?

When I received the phone 2.4ghz was fine (110/110) but 5ghz was not (550/3).
I had to go to setting > WiFi > Advanced (in the "..." menu near the gear on the upper right corner) and uncheck Wi-Fi optimization.
Then I got 550/250mbps
Not sure if it's relevant to your problem, but you could try that.

Good point. Seem to remember something similar on the 10 too. Thanks!

You're welcome Hope it will solve your issue.

Unfortunately, that didn't work. Got a replacement handset yesterday, just to be sure that it wasn't the phone, same problem happens?!
I use a Linksys router, if the op is still on the thread, what about you? Have no issues on other 5ghz networks. Well, the other 2 that I've connected to.

andybg40 said:
Unfortunately, that didn't work. Got a replacement handset yesterday, just to be sure that it wasn't the phone, same problem happens?!
I use a Linksys router, if the op is still on the thread, what about you? Have no issues on other 5ghz networks. Well, the other 2 that I've connected to.
Click to expand...
Click to collapse
I think I remember a bug with some Android phones on 5Ghz if IPv6 broadcasting was enabled in the router. Are you using this? Tried disabling it?

wnp_79 said:
I think I remember a bug with some Android phones on 5Ghz if IPv6 broadcasting was enabled in the router. Are you using this? Tried disabling it?
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Click to collapse
Thanks, i'll give that a try. I've never had this issue with any other phone, it's very odd and actually frustrating. While I can fix it at home, I wont be able to modify router settings when out and about, so if I struggle to get WiFi on the move, i'll be paying a fortune for data, which may force me to return the phone.

Just tested mine with Virgin Media router and WiFi optimisation turned on. Maxed out at 220Mbps

andybg40 said:
Unfortunately, that didn't work. Got a replacement handset yesterday, just to be sure that it wasn't the phone, same problem happens?!
I use a Linksys router, if the op is still on the thread, what about you? Have no issues on other 5ghz networks. Well, the other 2 that I've connected to.
Click to expand...
Click to collapse
I'm noticing issues on a Linksys router as well. My wife's old M8 had an issue that would go away when Bluetooth was turned off.
I messed with settings tonight and it seems more stable. I just made 2.4 and 5 on SSID, and changed all band settings to Auto.
*Shrugs
Sent from my HTC U11 using XDA-Developers Legacy app

If its happening on other connected devices on your wireless network either 2.4 or 5Ghz try changing Router channels.
I've seen this happen on 2.4Ghz. Turns out since I lived in a pretty Wifi congested area the channel my router kept picking as "The best" was actually 6 and all the routers default to that channel. Literally that frequency was so bugged down my internet went from hitting 60-80Mbps down to Kbps. Wifi Analyzer showed all 12 channels were pretty full. I switched to 5Ghz only and immediately saw a difference, but the few channels I do have on my router are getting congested nowadays too.
Nowadays whenever my phones Wifi speeds hit the floor I do speedtest on other wifi devices and Ethernet speeds. If theres a significant difference I quickly use Wifi Analyzer to see if its time to switch channels.

when i got my htc u11 unlocked i had problems with the wifi not connecting at all or if it did it would disconnect. i found that there was a software update so i downloaded it on my mobile data. once installed everything started working correctly. mine will connect at 866mhz to my dlink-879 ACN router

The ivp6 thing or whatever is what I did when I got the m9, it wouldn't connect to my wifi at first and it was 5ghz

Sildran said:
When I received the phone 2.4ghz was fine (110/110) but 5ghz was not (550/3).
I had to go to setting > WiFi > Advanced (in the "..." menu near the gear on the upper right corner) and uncheck Wi-Fi optimization.
Then I got 550/250mbps
Not sure if it's relevant to your problem, but you could try that.
Click to expand...
Click to collapse
I forgot about that option. Had issues with my 10 when it came out a d that fixed it, so far it's working on my 11.

Still having issues with this. Tried above suggestions, not specified a channel, currently set to auto. My M9 and 10 have no issues holding a fast connection. Getting a bored of it now, as trying to stream Le Mans and it constantly cuts signal.

andybg40 said:
Still having issues with this. Tried above suggestions, not specified a channel, currently set to auto. My M9 and 10 have no issues holding a fast connection. Getting a bored of it now, as trying to stream Le Mans and it constantly cuts signal.
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Click to collapse
Yea my problems still exist as well. Were you the one with a Linksys router?
Sent from my HTC U11 using XDA-Developers Legacy app

riggsandroid said:
Yea my problems still exist as well. Were you the one with a Linksys router?
Sent from my HTC U11 using XDA-Developers Legacy app
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Click to collapse
Yep, using Linksys.

XT1955-4 and WiFi calling in the UK

I have the XT1955-4 (hardware version is PVT1 if that means anything to anyone) and live in the UK but I'm having trouble getting WiFi calling on EE. Both Motorola and EE have told me it should work, but I don't get any indicator that it's enabled and when I try to call a number I get an error telling me to connect to a wireless network, even though I am connected to one and have no issues with Internet connectivity.
I spoke to somebody from EE but he was completely stumped. His best guess was that it's because I'm in the process of transferring my number across via PAC but he admitted he was pretty much guessing.
Does anybody have any idea what's going on?

drguildo said:
I have the XT1955-4 (hardware version is PVT1 if that means anything to anyone) and live in the UK but I'm having trouble getting WiFi calling on EE. Both Motorola and EE have told me it should work, but I don't get any indicator that it's enabled and when I try to call a number I get an error telling me to connect to a wireless network, even though I am connected to one and have no issues with Internet connectivity.
I spoke to somebody from EE but he was completely stumped. His best guess was that it's because I'm in the process of transferring my number across via PAC but he admitted he was pretty much guessing.
Does anybody have any idea what's going on?
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Click to collapse
It is the wifi network issues than phone problem.
The TCP port 500/4500 got blocked on your WiFi network.
Sent from my LG-LS997 using Tapatalk

cgigate said:
It is the wifi network issues than phone problem.
The TCP port 500/4500 got blocked on your WiFi network.
Sent from my LG-LS997 using Tapatalk
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Click to collapse
I don't have any ports blocked.

drguildo said:
I don't have any ports blocked.
Click to expand...
Click to collapse
It does seem to be a router issue, though as I can use WiFi calling when connected to other routers.

drguildo said:
It does seem to be a router issue, though as I can use WiFi calling when connected to other routers.
Click to expand...
Click to collapse
It looks the router issue. (Port 500/4500 traffic traversal issue)
Check the router VPN settings allow VPN/ipsec.,
Or simple reboot the router to clear VPN connection to fix the problem
Sent from my moto g(7) supra using Tapatalk

cgigate said:
It looks the router issue. (Port 500/4500 traffic traversal issue)
Check the router VPN settings allow VPN/ipsec.,
Or simple reboot the router to clear VPN connection to fix the problem
Sent from my moto g(7) supra using Tapatalk
Click to expand...
Click to collapse
You're in the right ballpark. It turned out it was because IPsec was enabled in the application-level gateway settings of my Billion 8800NL R2. After disabling it and rebooting I now have WiFi calling.
Thanks for your help.