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[Q] WiFi connection issue after updating p3100 to ICS 4.0.4 ?

I have trouble connecting to WiFi networks (once in 5 iteration) after updating p3100 to ICS 4.0.4. If the problem surfaces, I have to turnoff and turn-on the WiFi couple of times to make it work again.
I have seen this issue consistently with multiple WiFi network with different configurations (WPA, 802.1x, without security).
I am considering downgrading to ICS 4.0.3. Or could this be a hardware issue in my tablet ?
Suggestions please.

My tab 2 (P3100 on 4.0.4 via OTA) have similar behavior sometimes it will connect but other times it just shows connecting until i turn it off and on several times.
But one thing I notice this thing happens when I try to connect to my home router which use 'n' networks while using my mobile 3g router (b/g) it connects easily (that I've tried currently). Does your wifi networks use 802.11n or b/g?

I have the same issue with 4.0.3.I hope it is not hardware related.
http://forum.xda-developers.com/showthread.php?t=1663019

innov said:
My tab 2 (P3100 on 4.0.4 via OTA) have similar behavior sometimes it will connect but other times it just shows connecting until i turn it off and on several times.
But one thing I notice this thing happens when I try to connect to my home router which use 'n' networks while using my mobile 3g router (b/g) it connects easily (that I've tried currently). Does your wifi networks use 802.11n or b/g?
Click to expand...
Click to collapse
My home router supports 'n'. But i have configured it to work only on b&g.
In my case I see this issue with b&g setup as well.

I have been chatting with 3 Samsung agents and none of them are able to fix my tabs,they just want me to fill out the service request form,give me a break,I received the tablets today. What a joke.

shinydesert said:
I have been chatting with 3 Samsung agents and none of them are able to fix my tabs,they just want me to fill out the service request form,give me a break,I received the tablets today. What a joke.
Click to expand...
Click to collapse
I am patiently waiting for a fix..

adix82 said:
I am patiently waiting for a fix..
Click to expand...
Click to collapse
I have an interesting find.
Instead of just turning WiFi off and on, if you do 'forget SSID->WiFi off-WiFi on->Connect" there is no connection issue at all and it connects every time without any issue. Which makes me believe that it is a software issue.
I have got another update last week (P3100DDBLF3) and I am disappointed to see the issue exists yet.

jackscorp said:
I have trouble connecting to WiFi networks (once in 5 iteration) after updating p3100 to ICS 4.0.4. If the problem surfaces, I have to turnoff and turn-on the WiFi couple of times to make it work again.
I have seen this issue consistently with multiple WiFi network with different configurations (WPA, 802.1x, without security).
I am considering downgrading to ICS 4.0.3. Or could this be a hardware issue in my tablet ?
Suggestions please.
Click to expand...
Click to collapse
Removing the SIM card and doing a factory reset will wipe out this issue.
But then again put your SIM card back and try to connect disconnect your WiFi, There you got the problem again
This looks more like WiFi, GSM-Nework co-existence issue. Samsung .......:cyclops:

I reckon that recently samsung re-deploy 4.0.4 update for gt-p3100 and its variant. Does it still have this issue?

i dont think it is because of the hardware. ive used to had this problem. since ive updated my device to 4.1.1 jelly bean. it works fine. connected to the wifi almost immediately after i push the button

Wi-Fi "hidden disconnect" issue

Hey out there.
The other day I flashed AOKP JB Build 4 onto my Nexus S (i9023) and after about one day I got very annoying Wi-Fi issues.
The phone drops the connection every few minutes while the Wi-Fi icon stays blue.
I tried Matr1x kernel in the meanwhile which didn't fix the issue.
Yesterday I had enough of it and tried flashing Codename Android 3.6.6.
At first Wi-Fi was working quite good and I got all hope up but today I'm having the same problem again.
I was on Stock 4.1.1 before and I didn't have any issues like this.
Any help is very appreciated.
land.apfel

Did you try go into Wi-Fi settings and uncheck "avoid poor connections"? That helped me commentary somewhat, but my still disconnects from time to time..
Sent from my Nexus S

Yes, I have

Is this when the screen has turned off or while its on?

eksasol said:
Is this when the screen has turned off or while its on?
Click to expand...
Click to collapse
Both.
It's happening e.g. when I'm watching for a YouTube video. So I gotta disable and enable Wi-Fi to be able to continue watching the video.
But it's also happening when the phone is turned off so that e.g. I don't receive any emails in that time.
land.apfel

I got Wi-Fi Fixer working in the meanwhile and it's just reassociating and reconnecting every minute :/

do you have wifi issues with 4.1.2?

Is anyone having wifi problems when connecting to a wifi network using 4.1.2?on 4.1.1 and below, wifi always worked perfectly. But it has been kinda broken with every 4.1.2 rom i have tried. Am i the only one?i see a lot of people complaining about wifi issues with 4.1.2 but i see no one mentioning this on our device.
what happens with me is that the phone stays in state "obtaining ip adress" for a long time and then proceeds to properly connect. The "avoid poor connections" option is not enabled. anyone know why this is happening?Also, the signal is worse than with previous android versions!

migueldbr said:
Is anyone having wifi problems when connecting to a wifi network using 4.1.2?on 4.1.1 and below, wifi always worked perfectly. But it has been kinda broken with every 4.1.2 rom i have tried. Am i the only one?i see a lot of people complaining about wifi issues with 4.1.2 but i see no one mentioning this on our device.
what happens with me is that the phone stays in state "obtaining ip adress" for a long time and then proceeds to properly connect. The "avoid poor connections" option is not enabled. anyone know why this is happening?Also, the signal is worse than with previous android versions!
Click to expand...
Click to collapse
I've had that, happens only with certain routers and never really knew why. Also happened on GB though AFAIK.

polobunny said:
I've had that, happens only with certain routers and never really knew why. Also happened on GB though AFAIK.
Click to expand...
Click to collapse
but i have the same router as before and it also happens with my university wifi(and it didnt happen on 4.1.1 and below)! Never had any issues(ever!) with GB, ICS and early JB=/. But for some reason this 4.1.2 messes my wifi.
here is a logcat i took. as you can see the wifi "stuff" begins and then stops. Only after 30 seconds or so it displays the message that the phone is now connected

This could be a rom specific problem or even simply a kernel issue.

Mobile Telephone said:
This could be a rom specific problem or even simply a kernel issue.
Click to expand...
Click to collapse
not a rom specific problem and also not a kernel issue. Have tried several roms and many different kernels!

Had this issue. Sometimes it doesn't even detect my wifi. Had to reboot the router for it to work. I think this is android-specific on SOME routers.

ej8989 said:
Had this issue. Sometimes it doesn't even detect my wifi. Had to reboot the router for it to work. I think this is android-specific on SOME routers.
Click to expand...
Click to collapse
i always detect wifi networks. rebooting router does not fix this. Also, it makes no sense that it is related to the router since it happens with both my home wifi and my university wifi (and with 4.1.1 and below it worked properly on both my home wifi and university).
Some change must have been made in 4.1.2 for the wifi to behave this way. Anyone can get anything from the logcat i provided?
Also, the wifi connects properly if i set static ip on my phone but i can only do that at home because i have acess to my router. Is there any way i can restore wifi files from 4.1.1 to 4.1.2 to make it work properly without having to set static ip?

Same issue here
migueldbr said:
i always detect wifi networks. rebooting router does not fix this. Also, it makes no sense that it is related to the router since it happens with both my home wifi and my university wifi (and with 4.1.1 and below it worked properly on both my home wifi and university).
Some change must have been made in 4.1.2 for the wifi to behave this way. Anyone can get anything from the logcat i provided?
Also, the wifi connects properly if i set static ip on my phone but i can only do that at home because i have acess to my router. Is there any way i can restore wifi files from 4.1.1 to 4.1.2 to make it work properly without having to set static ip?
Click to expand...
Click to collapse
I have the same issue. Can you please let me know if you were able to solve this? If yes, then how?

WIFI Problem

Hello, so i have a problem with wi-fi where it either doesn't want to connect, just stays on saved, or it connects and the speed is very slow and it disconnects after a while. This started happening only a week ago i think. It's not my router because other devices work ok. And it wasn't my rom because i had the same rom for a long time, i also tried few other roms and it is the same. I've had baseband 3.0, now i'm on 4.0.1.c7. Can it be the antenna dying or something?

walent said:
Hello, so i have a problem with wi-fi where it either doesn't want to connect, just stays on saved, or it connects and the speed is very slow and it disconnects after a while. This started happening only a week ago i think. It's not my router because other devices work ok. And it wasn't my rom because i had the same rom for a long time, i also tried few other roms and it is the same. I've had baseband 3.0, now i'm on 4.0.1.c7. Can it be the antenna dying or something?
Click to expand...
Click to collapse
https://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-lollipop-t3300907
You can try flashing different firmwares.

Mr.Ak said:
https://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-lollipop-t3300907
You can try flashing different firmwares.
Click to expand...
Click to collapse
Unfortunately that's not it. As i've told it worked up until a certain point on the same firmware. Also i've tried flashing some today, it's the same.
Sometimes it can't connect, stuck on saved, sometimes it's Connected, no internet, sometimes it's connected and very slow internet.
3G works perfectly.

walent said:
Unfortunately that's not it. As i've told it worked up until a certain point on the same firmware. Also i've tried flashing some today, it's the same.
Sometimes it can't connect, stuck on saved, sometimes it's Connected, no internet, sometimes it's connected and very slow internet.
3G works perfectly.
Click to expand...
Click to collapse
Then try clean flashing the ROM again...
It doesn't matter if it was working perfectly fine before,a clean flash can solve many issues.

Mr.Ak said:
Then try clean flashing the ROM again...
It doesn't matter if it was working perfectly fine before,a clean flash can solve many issues.
Click to expand...
Click to collapse
Still not working

walent said:
Still not working
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Click to collapse
Which ROM?

Mr.Ak said:
Which ROM?
Click to expand...
Click to collapse
I was on TugaPower, then hyperUnicorns, LineageOS nightly now back to TugaPower again.
For example at the moment i tried connecting, it was Connected-No internet, then disconnected after 5 secs.

walent said:
I was on TugaPower, then hyperUnicorns, LineageOS nightly now back to TugaPower again.
For example at the moment i tried connecting, it was Connected-No internet, then disconnected after 5 secs.
Click to expand...
Click to collapse
It has been the same WiFi issue with the all the ROMs?

Mr.Ak said:
It has been the same WiFi issue with the all the ROMs?
Click to expand...
Click to collapse
Yes, since it started, it never worked normally, no matter what rom or firmware i use.
I'm guessing it's the hardware then.

walent said:
Yes, since it started, it never worked normally, no matter what rom or firmware i use.
I'm guessing it's the hardware then.
Click to expand...
Click to collapse
Not yet..
Go to the preferred Wifi network showing on your mobile and change the IP Settings to 'Static'. Now go to the settings of your Wifi network provider (on a System) & check the IP address they are using. Insert the same IP address in your mobile & save the settings.
Let me know if this works.

Mr.Ak said:
Not yet..
Go to the preferred Wifi network showing on your mobile and change the IP Settings to 'Static'. Now go to the settings of your Wifi network provider (on a System) & check the IP address they are using. Insert the same IP address in your mobile & save the settings.
Let me know if this works.
Click to expand...
Click to collapse
Works few seconds, then disconnects, connects again, slow speed etc. Same as DHCP
As i was saying, everything worked perfectly up until a point. Idk if i dropped my phone or something.

walent said:
Works few seconds, then disconnects, connects again, slow speed etc. Same as DHCP
As i was saying, everything worked perfectly up until a point. Idk if i dropped my phone or something.
Click to expand...
Click to collapse
https://www.dropbox.com/s/hnhprafmlag98d7/COS12_DHCP_fix_via_CM11s_DHCPCD.zip?dl=0
Try flashing this zip,always make backup.

Mr.Ak said:
https://www.dropbox.com/s/hnhprafmlag98d7/COS12_DHCP_fix_via_CM11s_DHCPCD.zip?dl=0
Try flashing this zip,always make backup.
Click to expand...
Click to collapse
Worked for a while, started disconnecting again, slow speed etc.
At this point i'm pretty sure it's the hardware
Edit: Seems to work after hitting the phone a few times. No further comment on this.

Did something work out ? Mine has been failing for over a week now... The only way to resolve the issue temporarily is to reboot the phone...
To specify the issue, I'd say :
1. Most of the time, my phone is wifi connected to my router, but either speed is slow as hell - or absent
2. Sometimes, the wifi status is "connected, no internet"
3. In short bursts, wifi disconnects, enabling LTE, then connects back to wifi, with issue 1 or 2.

i second this! happens mostly when i lock the phone (yes ive checked my settings and thats not the case), i dont believe its hardware because i remember it being on the COS13 bug list, maybe firmware. (After being on jgcaap and facing too many wifi issues i reverted back to stock yesterday, issue still here)

WiFi Problem

Well, day 2 and first problem. Phone connects to my work wifi but I get no internet connection. My other phone is connected with internet connection at the same time. Both phones have same settings afaik
WHEN YOU GET YOUR NEW PHONE, CHECK WIFI/INTERNET SERVICE ON ALL OF YOUR USUAL NETWORKS.

lollyjay said:
Well, day 2 and first problem. Phone connects to my work wifi but I get no internet connection. My other phone is connected with internet connection at the same time. Both phones have same settings afaik
Click to expand...
Click to collapse
Does your work wifi have any restrictions/security on it?

lollyjay said:
Well, day 2 and first problem. Phone connects to my work wifi but I get no internet connection. My other phone is connected with internet connection at the same time. Both phones have same settings afaik
Click to expand...
Click to collapse
Sounds like a local ip conflict or something else on your router side not a problem on the phone side. Did you follow the basic rule and restart the wifi router?

wtharp2 said:
Does your work wifi have any restrictions/security on it?
Click to expand...
Click to collapse
Just a password

jwis921 said:
Sounds like a local ip conflict or something else on your router side not a problem on the phone side. Did you follow the basic rule and restart the wifi router?
Click to expand...
Click to collapse
1 It is not my router; it belongs to my employer
2 My OnePlus 6 is here too and connected to the internet
3 All of my coworkers' phones are connected to the internet

So the phone works fine on your home wifi? It could still be the router. At my business if it has not been restarted in a while, new devices will not connect as too many ip have been given out since last restart so no more will be able to connect.

jwis921 said:
So the phone works fine on your home wifi? It could still be the router. At my business if it has not been restarted in a while, new devices will not connect as too many ip have been given out since last restart so no more will be able to connect.
Click to expand...
Click to collapse
I did a forget on my op6 and it still connected to the internet

lollyjay said:
I did a forget on my op6 and it still connected to the internet
Click to expand...
Click to collapse
That does nothing as the router has an IP stored for that Mac address currently. It's not renewing it's lease, the router just sees it as the phone has disconnected and reconnected like it does every day you go in. If the phone cant connect to any wifi then it's a hardware issue. Otherwise it is more than likely a network issue with the router.

jwis921 said:
That does nothing as the router has an IP stored for that Mac address currently. It's not renewing it's lease, the router just sees it as the phone has disconnected and reconnected like it does every day you go in. If the phone cant connect to any wifi then it's a hardware issue. Otherwise it is more than likely a network issue with the router.
Click to expand...
Click to collapse
I can connect to any other wifi just not this one

Sooo, I had a similar problem on Wednesday when I got my phone. During setup it wouldn't connect to my WAP (DHCP). No matter what I did on the phone it wouldn't connect. I went into my networking equipment settings (Cisco everything) and reserved it an IP. Worked. Thing is, sometimes I open an app that requires Internet, and it just spins. Or music won't start playing, whatever. I turn off then back on my WiFi and it's fine. I'm going to reboot my networking gear tonight and un-reserve the IP, see what happens. I REALLY hope this isn't a hardware issue on my phone. I'll be pissed if I already have to get a replacement.
Also, restarting the phone doesn't fix my issue with no Internet, only turning off then back on the WiFi. Might be something worth trying.

gettinwicked said:
Sooo, I had a similar problem on Wednesday when I got my phone. During setup it wouldn't connect to my WAP (DHCP). No matter what I did on the phone it wouldn't connect. I went into my networking equipment settings (Cisco everything) and reserved it an IP. Worked. Thing is, sometimes I open an app that requires Internet, and it just spins. Or music won't start playing, whatever. I turn off then back on my WiFi and it's fine. I'm going to reboot my networking gear tonight and un-reserve the IP, see what happens. I REALLY hope this isn't a hardware issue on my phone. I'll be pissed if I already have to get a replacement.
Also, restarting the phone doesn't fix my issue with no Internet, only turning off then back on the WiFi. Might be something worth trying.
Click to expand...
Click to collapse
Thanks but this is my workplace wifi. I can't make them reboot for me

lollyjay said:
Thanks but this is my workplace wifi. I can't make them reboot for me
Click to expand...
Click to collapse
I didn't mean the WAP or router, I mean the WiFi toggle on your phone.

gettinwicked said:
I didn't mean the WAP or router, I mean the WiFi toggle on your phone.
Click to expand...
Click to collapse
Oh yes I tried that too
I spent 20 minutes with a Google tech and nothing worked

The WIFI performance on P3 and XL is not good. My old ass S5 outperforms both by a large margin on 2.4 and 5. My home router is high performance Turris Omnia. The pixels sometimes drop wifi completely in the bedroom 20 ft away (with horsehair plaster walls). In the driveway the S5 and Nexus 10 have solid connections and I get nothing from the P3 XL. This issue might be the last straw. WTF Google?
Check your WIFI connections before return window expires.

lollyjay said:
Oh yes I tried that too
I spent 20 minutes with a Google tech and nothing worked
Click to expand...
Click to collapse
My work it department enacted a rule whereas they want to know every device that is on the network so I have to submit a network address request and give them my Mac address so they can allow my device access to the wifi network again. Maybe your work it ppl are doing the same thing. Maybe work devices are allowed by default.
Also my p2xl wifi reception is weak... I'm about to get a wifi mean network setup so I can get better coverage throughout my house.

My phone seems to be working better the last couple days. I had some problems yesterday, but it ended up just being YouTube Music. Also, my network speeds are great. Even when I was having problems a lot, my link and Internet speeds were up at the top of what my gear offers.
To anyone having, or has had problems, submit feedback on it from your phone. Maybe Google will see it and do something about it. I'm really hoping for a lot of fixes in the November update.

My IT department solved my issue by resetting the system.