WiFi glitch with WiFi extender - Samsung Epic 4G Touch

Hi, I am using Calkulin's 2 v1.6 ROM, with FE22 modem.
I noticed that WiFi on the phone keeps crashing, when I am trying to access internet via WiFi extender. When I am connecting via router no problems at all.
My friends also have E4GT, with stock EL29 firmware and modem, and they don't have any issues connecting over WiFi extender.
I tried other devices (iPhone 4S, iPod, laptops, netbook, etc.) those have no issues over WiFi extender either.
I tried just flashing the modem to EL29, FF02, FF18 and the results are the same as with FE22 (WiFi crashes and restarts on the phone).
Any remedy or anyone else having similar issues?

WiFi extender?? Are you talking about a repeater or an app?
I saw an app on the market claiming to 'extend' the wifi range of your phone. Obviously a bunch of bs. Hopefully that's not what you're talking about.

lindros_nyr said:
Hi, I am using Calkulin's 2 v1.6 ROM, with FE22 modem.
I noticed that WiFi on the phone keeps crashing, when I am trying to access internet via WiFi extender. When I am connecting via router no problems at all.
My friends also have E4GT, with stock EL29 firmware and modem, and they don't have any issues connecting over WiFi extender.
I tried other devices (iPhone 4S, iPod, laptops, netbook, etc.) those have no issues over WiFi extender either.
I tried just flashing the modem to EL29, FF02, FF18 and the results are the same as with FE22 (WiFi crashes and restarts on the phone).
Any remedy or anyone else having similar issues?
Click to expand...
Click to collapse
I have been on any number of roms/modems... In addition to my main one I have 3 routers flashed over to dd-wrt and used as repeaters throughout the house (yes, my wifi signal strength is EXCELLENT, EVERYWHERE!). I have never had any wifi connectivity problems nor have i seen this issue elsewhere on the forum before. Is it possible that a simple mistake is causing it, like a mistyped password saved as default?

lindros_nyr said:
Hi, I am using Calkulin's 2 v1.6 ROM, with FE22 modem.
I noticed that WiFi on the phone keeps crashing, when I am trying to access internet via WiFi extender. When I am connecting via router no problems at all.
My friends also have E4GT, with stock EL29 firmware and modem, and they don't have any issues connecting over WiFi extender.
I tried other devices (iPhone 4S, iPod, laptops, netbook, etc.) those have no issues over WiFi extender either.
I tried just flashing the modem to EL29, FF02, FF18 and the results are the same as with FE22 (WiFi crashes and restarts on the phone).
Any remedy or anyone else having similar issues?
Click to expand...
Click to collapse
What kind of wi-fi extender are you using? And is it possible that it's the wi-fi configuration that is causing the problem?
Reason for asking is I have seen odd behavior with my work network on occasion, but the configuration is correct.

garwynn said:
What kind of wi-fi extender are you using? And is it possible that it's the wi-fi configuration that is causing the problem?
Reason for asking is I have seen odd behavior with my work network on occasion, but the configuration is correct.
Click to expand...
Click to collapse
I have the Diamond Multimedia WR300N WiFi Extender. The network is configured with WPA2 AES encryption (I tried using WPA & WEP as well).
Seems that only my E4GT has issues, like I said. My friends' pair of E4GTs with stock ROMs (EL29 and modem is also EL29) don't have any issues using my extender.

cp320703 said:
I have been on any number of roms/modems... In addition to my main one I have 3 routers flashed over to dd-wrt and used as repeaters throughout the house (yes, my wifi signal strength is EXCELLENT, EVERYWHERE!). I have never had any wifi connectivity problems nor have i seen this issue elsewhere on the forum before. Is it possible that a simple mistake is causing it, like a mistyped password saved as default?
Click to expand...
Click to collapse
No mistakes for sure, as I get the IP address on the smartphone, get max strength indicator on the phone. Tried WiFi Analyzer, it shows connected, and no problems (verified MAC address of the extender).
Again, the only time I am having the problems are when connected to the WiFi extender.
Could it be that the hardware for the phone's WiFi is older than my friends'? I got the phone back in November, through Walmart's subsidiary (they had a much cheaper price). Could it be that the phone itself is of "early" releases, and may have earlier hardware that Samsung switched away from later on?
Basically, I am trying to figure out if it's a hardware issue, and if it is, I can try to get it fixed/exchanged via Samsung's 1-year warranty or through Sprint.

KCRic said:
WiFi extender?? Are you talking about a repeater or an app?
I saw an app on the market claiming to 'extend' the wifi range of your phone. Obviously a bunch of bs. Hopefully that's not what you're talking about.
Click to expand...
Click to collapse
Diamond Multimedia WiFi extender WR300N, basically wireless repeater.

lindros_nyr said:
No mistakes for sure, as I get the IP address on the smartphone, get max strength indicator on the phone. Tried WiFi Analyzer, it shows connected, and no problems (verified MAC address of the extender).
Again, the only time I am having the problems are when connected to the WiFi extender.
Could it be that the hardware for the phone's WiFi is older than my friends'? I got the phone back in November, through Walmart's subsidiary (they had a much cheaper price). Could it be that the phone itself is of "early" releases, and may have earlier hardware that Samsung switched away from later on?
Basically, I am trying to figure out if it's a hardware issue, and if it is, I can try to get it fixed/exchanged via Samsung's 1-year warranty or through Sprint.
Click to expand...
Click to collapse
The driver changed with ICS so it could be a driver issue. It was a pain for me at work because I had to retweak my custom settings to get it to work again.
Here's a good test to verify: If your friends get the OTA and still can get on it's likely your phone. The only other thing you could try is the country code tweak in my wpa_supplicant.conf guide, which does seem to help sometimes.

garwynn said:
The driver changed with ICS so it could be a driver issue. It was a pain for me at work because I had to retweak my custom settings to get it to work again.
Here's a good test to verify: If your friends get the OTA and still can get on it's likely your phone. The only other thing you could try is the country code tweak in my wpa_supplicant.conf guide, which does seem to help sometimes.
Click to expand...
Click to collapse
Thanks for pointing it out. Just tried updating the wpa_supplicant.conf with ap_scan=2 and country=US. Saved it, tried to turn on WiFi radio, it wouldn't turn on. Tried restarting the phone, trying to enable WiFi radio, it won't come on. Finally deleted the file, was able to turn on the radio and OS basically rebuilt it, but of course without country code.
So, for this phone still no internet access via WiFi extender, but works like a charm with the router.

lindros_nyr said:
Thanks for pointing it out. Just tried updating the wpa_supplicant.conf with ap_scan=2 and country=US. Saved it, tried to turn on WiFi radio, it wouldn't turn on. Tried restarting the phone, trying to enable WiFi radio, it won't come on. Finally deleted the file, was able to turn on the radio and OS basically rebuilt it, but of course without country code.
So, for this phone still no internet access via WiFi extender, but works like a charm with the router.
Click to expand...
Click to collapse
For your case you may just want to try adding the country and not the ap_scan=2.
I need that for the old RADIUS configurations at work and is known to be twitchy at times.

garwynn said:
For your case you may just want to try adding the country and not the ap_scan=2.
I need that for the old RADIUS configurations at work and is known to be twitchy at times.
Click to expand...
Click to collapse
Yeah, I tried just country as well, and the WiFi radio wouldn't come on with it in the conf file.

lindros_nyr said:
Yeah, I tried just country as well, and the WiFi radio wouldn't come on with it in the conf file.
Click to expand...
Click to collapse
Hmm. That in itself shouldn't cause the wifi to fail on startup...
Can you please copy and paste your wpa_supplicant.conf information when you have time?
(Please remove any specific SSID, IDs and passwords though)
If you would feel more comfortable doing this by PM that's OK too.
Just have an odd feeling that there is something else at play here.

garwynn said:
Hmm. That in itself shouldn't cause the wifi to fail on startup...
Can you please copy and paste your wpa_supplicant.conf information when you have time?
(Please remove any specific SSID, IDs and passwords though)
If you would feel more comfortable doing this by PM that's OK too.
Just have an odd feeling that there is something else at play here.
Click to expand...
Click to collapse
After deleting the conf file, and enabling WiFi, the OS rebuilds it.
Basically this its' content...
Code:
update_config=1
ctrl_interface=wlan0
eapol_version=1
ap_scan=1
fast_reauth=1
p2p_listen_reg_class=81
p2p_listen_channel=1
p2p_oper_reg_class=81
p2p_oper_channel=11

lindros_nyr said:
After deleting the conf file, and enabling WiFi, the OS rebuilds it.
Basically this its' content...
Code:
update_config=1
ctrl_interface=wlan0
eapol_version=1
ap_scan=1
fast_reauth=1
p2p_listen_reg_class=81
p2p_listen_channel=1
p2p_oper_reg_class=81
p2p_oper_channel=11
Click to expand...
Click to collapse
Ok, I went back to GB EL29 stock rooted, reflashed modem to EL29, same problem - no internet connectivity via WiFi extender.
Flashed FF18 Sfhub's OTA rooted (with FF18 modem), installed Agat's emmc recompiled kernel. Still no internet connectivity via WiFi extender.
Anything else that I can do/try, or should I just get on Sprint's/Samsung's case and try to get it replaced by either Sprint (although I don't have insurance plan) or go through Samsung's warranty (had the device for about 7 months)?
Thanks!

Shot in the dark here, MAC filtering enabled somewhere?
Sent from my SPH-D710 using Tapatalk 2

dberend said:
Shot in the dark here, MAC filtering enabled somewhere?
Sent from my SPH-D710 using Tapatalk 2
Click to expand...
Click to collapse
No MAC filtering. Tried with Static IP and DHCP...
WiFi works when connected to router, when I move to the WiFi extender, it hops on to WiFi extender, full bars, WiFi analyzer confirms the signal strength. IP address and the rest of the network settings are correct. but no internet connectivity on the phone.

lindros_nyr said:
No MAC filtering. Tried with Static IP and DHCP...
WiFi works when connected to router, when I move to the WiFi extender, it hops on to WiFi extender, full bars, WiFi analyzer confirms the signal strength. IP address and the rest of the network settings are correct. but no internet connectivity on the phone.
Click to expand...
Click to collapse
Does the extender have a separate IP address or could it somehow be still trying to reach the router directly? You could try some ping tests to see how far that gets you, but if the repeater doesn't have a separate IP to route through I'm not sure it will get you anywhere.

garwynn said:
Does the extender have a separate IP address or could it somehow be still trying to reach the router directly? You could try some ping tests to see how far that gets you, but if the repeater doesn't have a separate IP to route through I'm not sure it will get you anywhere.
Click to expand...
Click to collapse
The WiFi extender basically is an access point to the router. Its' DHCP is off, but the phone gets IP address from the router.
Again my friends' E4GTs don't have any issues getting to the internet via my extender.

lindros_nyr said:
The WiFi extender basically is an access point to the router. Its' DHCP is off, but the phone gets IP address from the router.
Again my friends' E4GTs don't have any issues getting to the internet via my extender.
Click to expand...
Click to collapse
Well if you're able to connect and obtain an IP address then I can't think of any reason why the traffic would not go through instead of a potential routing issue - at a hardware level it is communicating. Higher up in the process I could see a potential issue with routing if it is trying to route directly to the router and not through the extender.
I would try this test if you're wiling - enable DHCP on the extender, treat the extender as a subnet. This should require the repeater to get its IP address where you may be able to do a ping test and see where the traffic is being stalled. You could also try changing the SSID when contacting via the extender if it would allow. Honestly, any way for it to know more clearly which is which may help resolve your problem.

garwynn said:
Well if you're able to connect and obtain an IP address then I can't think of any reason why the traffic would not go through instead of a potential routing issue - at a hardware level it is communicating. Higher up in the process I could see a potential issue with routing if it is trying to route directly to the router and not through the extender.
I would try this test if you're wiling - enable DHCP on the extender, treat the extender as a subnet. This should require the repeater to get its IP address where you may be able to do a ping test and see where the traffic is being stalled. You could also try changing the SSID when contacting via the extender if it would allow. Honestly, any way for it to know more clearly which is which may help resolve your problem.
Click to expand...
Click to collapse
Thank you for providing assistance with this issue. I did the setup as you mentioned to no avail. Everything works fine as long as it's not in the repeater mode. Can't do a repeater configuration with a different SSID, though.
Also, tried turning the router off, and hooking up the extender via LAN cable to the cable modem, and configuring the WiFi extender as a "WiFi router". Everything was working again.
I came to the conclusion, that it's either the driver or the hardware, although the driver alone shouldn't be an issue, as I mentioned, we tested it with 2 other E4GTs on the same firmware & modem versions, and they didn't encounter any issues.
I went to Sprint store, paid $35 and should be getting a replacement phone under warranty shortly.
Will let you know how I make out.
Again thank you for all of your help!

Related

[Q] Wifi issue with HTC Desire

Hi guys,
I`ve been using an HTC Desire the last couple of weeks and to avoid overloading my dataplan when I am at home I use my WiFi. It worke just fine `till today , when the phone connects as always but it cannot load any Internet pages or open any apps that use the Internet. If I switch to 3G it works just fine, when I go back to Wifi it stops working again.
The phone shows up on the DHCP Lease List in the Router Admin page. I can ping with no loss of data. I`m clueless to what might have happened.
Please help.
Thank you
Try changing channels on your router.
Remember seeing a post about this awhile back.
Moscow Desire said:
Try changing channels on your router.
Remember seeing a post about this awhile back.
Click to expand...
Click to collapse
it worked just fine. THANKS A LOT. although i don`t really get why it worked till today. thanks again.
Not a problem. Just remember to help others when you can.
I'm having the same issue, WiFi connects fine but there's no data. Tried it all, different radios, changing WiFi channels on my router, different ROMs, etc. but nothing worked. Meanwhile an old Nokia E71 works like a charm with the same router... what can this be?
In your Wifi Advanced settings, you can select number of channels in Regulatory Domain. Also, check your WiFi sleep policy, and set it to Never.
Might help
soylentorama said:
I'm having the same issue, WiFi connects fine but there's no data. Tried it all, different radios, changing WiFi channels on my router, different ROMs, etc. but nothing worked. Meanwhile an old Nokia E71 works like a charm with the same router... what can this be?
Click to expand...
Click to collapse
Only other suggestion I can think is to change your RIL.
There is a thread here:
http://forum.xda-developers.com/showthread.php?t=902752
Do you have good 3G, calls signal etc?
I use the latest (17) radio any the Nexus (1001G) RIL and have no issues.
Moscow Desire said:
In your Wifi Advanced settings, you can select number of channels in Regulatory Domain. Also, check your WiFi sleep policy, and set it to Never.
Might help
Click to expand...
Click to collapse
It was already set to 'Never' but I fail to see the Regulatory Domain opition?!
00droid said:
Only other suggestion I can think is to change your RIL.
There is a thread here:
http://forum.xda-developers.com/showthread.php?t=902752
Do you have good 3G, calls signal etc?
I use the latest (17) radio any the Nexus (1001G) RIL and have no issues.
Click to expand...
Click to collapse
Tried different RILs...
This is the thing, just went to my office and it works fine with a router over there. It fails to work at home, where it DID work in the past as well. All other devices I have are working fine with my home router except for Desire... Any ideas?
CM7, RC3 Rom has this option.
Can't think of any other issue with a home Wifi setup.
I dunno if my problem is wifi related, but when using K-9 Mail, Yahoo and Gmail always returns unsent, with the "Message not sent, connection reset by peer" error always appearing. It wasn't like this before, and my wifi works okay with my laptop. Market on my phone works flawlessly too. Anyone got an idea of what might've gone wrong?
soylentorama said:
It was already set to 'Never' but I fail to see the Regulatory Domain opition?!
Tried different RILs...
This is the thing, just went to my office and it works fine with a router over there. It fails to work at home, where it DID work in the past as well. All other devices I have are working fine with my home router except for Desire... Any ideas?
Click to expand...
Click to collapse
Tricky....
Logic - on the day the problem occurred, something changed on a) your router, b) your hanset. Did you do any updates, flashing etc. or were there any updates to your router ISP? New tariff or anything, maximum number of connections?
00droid said:
Tricky....
Logic - on the day the problem occurred, something changed on a) your router, b) your hanset. Did you do any updates, flashing etc. or were there any updates to your router ISP? New tariff or anything, maximum number of connections?
Click to expand...
Click to collapse
I did flash LeeDroid 3.03, coming from 3.02... then rolled back to 'fix' the issue but it persisted. I tried then flashing _most_ available radios, RILs and ROMs so I think it's router related. Now, why would this be the case if all other devices connect just fine to the same router? Does Desire have some issues with 802.11N routers?

Anyone else having WiFi issues?

I'm having issues with WiFi staying connected in my house.
Anyone have an idea on what I can do?
Just tossing this out there...
Alot of wireless routers provided by cable companies are limited to 5 devices... my provider actually has 5 listed in their tos..
Sent from my Droid using XDA App
And that would make sense, but it's also when I'm on my work's WiFi
What firmware?
Mine works fine. I use wifi sync with winamp and did my initial sync overnight without any errors.
nimdae said:
What firmware?
Mine works fine. I use wifi sync with winamp and did my initial sync overnight without any errors.
Click to expand...
Click to collapse
2.3.3 Stock, no root
I've been having wifi issues too. It's connected, but there is no data being sent/received. It's happened on sense, cm7, omfgb. I've tried reseting the phone and the router but nothing has helped. Has anyone found out how to remedy this issue?
I'd love to investigate further but I can't reproduce this problem
Can you describe your wifi setup (router and phone) so I can try to replicate the conditions?
nimdae said:
I'd love to investigate further but I can't reproduce this problem
Can you describe your wifi setup (router and phone) so I can try to replicate the conditions?
Click to expand...
Click to collapse
I have an old linksys srx200 router connected to the router Comcast gave me (the black box that runs phone and internet). My phone is a recently gb s-off rooted inc2. I tried sense (stock and virtuous), omfgb, cm7 and they all have the problem so I'm thinking its either my phone or router...
A few posts above talks about having too many computers connected to the router being the problem, which could possibly be my case but hasn't been a problem until a few days ago... I have up to 2 desktops and 2-4 laptops connected at once (yes, I have a big family). I hope all this info helps
Sent from my ADR6350 using XDA App
My first step would be to update the firmware on your router. You also states that your linksys srx200 is connected to a Comcast "router" . Do you mean modem or is it a gateway (modem with built in router ) because if the latter, then the dual Nat setup may be causing issues. But with some info we can tackle it.
Dalamar1320 said:
My first step would be to update the firmware on your router. You also states that your linksys srx200 is connected to a Comcast "router" . Do you mean modem or is it a gateway (modem with built in router ) because if the latter, then the dual Nat setup may be causing issues. But with some info we can tackle it.
Click to expand...
Click to collapse
It's a Comcast modem that also hooks up the home phone line, sorry about the confusion. I have updated the firmware, but linksys has only come out with one firmware update in the years that I have had the router. The update hasn't helped much and the open firmwares like ddrt (if I remember correctly) isn't supported for the modem.
Sent from my ADR6350 using XDA App
I have problems with wifi dropping out in my house, too.
Comcast modem, old D-link 524 router, all other electronics have no problems staying connected, down to my old Palm TX.
On the Dinc2, it drops frequently.
I was just noticing this last night.
I'm staying in a hotel and in my room I get 60% signal with my laptop, however on my phone it shows 10% signal and intermittently drops out
anyone else having issues with poor wifi signal?
Never had a problem with intermittent WiFi, would update your firmware.
Sent from my Incredible 2 using xda premium

WIFI connection issue

I am unable to connect to my WIFI at home, I have tried everything I can think of, which is quite a bit. All I get is obtaining IP loop and then says poor signal and quits trying, (I have tried sitting right next to the router) My router shows that DHCP has handed the phone an IP, but the phone does not seem to take.
Tried adding a network manually
Tried advanced settings, and giving a static IP address, I can get it to show its connected but can not get any internet, data etc.
Tried the *#0011#
Tried a master reset, and tried to connect to wifi before installing anything.
I am at a loss, would not be a big deal but the 4G at home is sketchy, cuts in and out a bunch, plus for what I paid for the phone the wifi should at least work.
Tmobile tech support is not much help, neither is Samsungs.
Any help is appreciated!
boncvibe said:
I am unable to connect to my WIFI at home, I have tried everything I can think of, which is quite a bit. All I get is obtaining IP loop and then says poor signal and quits trying, (I have tried sitting right next to the router) My router shows that DHCP has handed the phone an IP, but the phone does not seem to take.
Tried adding a network manually
Tried advanced settings, and giving a static IP address, I can get it to show its connected but can not get any internet, data etc.
Tried the *#0011#
Tried a master reset, and tried to connect to wifi before installing anything.
I am at a loss, would not be a big deal but the 4G at home is sketchy, cuts in and out a bunch, plus for what I paid for the phone the wifi should at least work.
Tmobile tech support is not much help, neither is Samsungs.
Any help is appreciated!
Click to expand...
Click to collapse
Does your phone's wifi work on other networks? (Coffee shop, neighbor's, etc..)
What type of authentication is your router using? Try disabling authentication and see if it works.
What model is your router? Does it have up to date firmware?
vinvam said:
Does your phone's wifi work on other networks? (Coffee shop, neighbor's, etc..)
What type of authentication is your router using? Try disabling authentication and see if it works.
What model is your router? Does it have up to date firmware?
Click to expand...
Click to collapse
Yes it connects to my work wifi.
WPA/WPA2
Its a Belkin router, not sure of the model off the top of my head, I know its somewhat newer cause it has the N protocol.
I would really suspect the router if I did not have other devices that work fine on the network, 2 kindle fires, 3 laptops, 1 S,Captive, Wii, and Xbox, and my Vibrant worked fine till I got this phone. Not everything is on at the same time, but I am sure that would not matter cause I have never had an issue when it all was connected at the same time.
Have you flashed a kernel lately? I have issues connecting to my router flashing some kernels. Just a thought.
Sent from my SGH-T999 using xda premium
Or if you are on a custom rom, reflash the same rom again.
Sent from my SGH-T999 using xda app-developers app
same issue
I have the same issue, but my Wifi wont connect to any network and actually show throughput if I set the wifi power **** to off with the *#0011# menu.
I was stuck on stock roms because akop based (cmx) dont have that service menu.
I recently flashed to Uvalh2 stock rooted and the wifi works as it should for the 1st time ever. I flashed back to ulvem and it needs the 0011 **** again...
my home router is also a belkin with b/g/n, but my wifi never worked anywhere without the menu trick;
ANY help to troubleshoot if this is radio/kernel/rom based or what setting the menu changes so we can possibly set it manually in terminal..
thanks for this thread
Best I can think of real quick is to try different kernels and modems. (Check out the Modem Flasher in dev, makes it really easy)
Sent from my SGH-T999 using xda app-developers app
Just hate the fact I have to try other kernels and modems after paying an arm and a leg for this phone, should not have to.
And seeing I have never done that before it makes me heisatate even more, I am sure I can do it, just that whole what it.
I just dont get why if I give the phone a static IP then it will connect, but can not move data, I went to the *#0011# and was able to ping the router and laptop on the network etc. I am at a loss
Anyone have any other suggestions on this issue???
You're on the stock 4.0.4?
psykhotic said:
You're on the stock 4.0.4?
Click to expand...
Click to collapse
Yes I'm on 4.0.4 no root or anything.
Baseband ver. UVLH2
Anyone out there have any more Ideas? I was hoping JB might have fixed it, but it did not.

Galaxy Note 2 constantly loses wifi?

I never had problems with my Galaxy note 2 when it came to wifi until I stayed over my mother's house.
My Galaxy Note 2 constantly kept disconnecting, and reconnecting to her router.
I clicked forget network to monitor the signal strength. There was full bars and the signal never got lost.
So I did what a normal user would do. GOOGLE. And I saw A LOT of people experiencing this issue.
Yet there was no solution to the problem! Everyone is hoping to see an update and blah blah.
So I decided to try to figure the problem out myself.
I thought about it. What's different between my mom's optimum wifi vs my Verizon FiOS wifi.
My router has one network name.. Wait my mom has two? Hmmm...
DX20PR.. *disconnects*......... DX20PR 5G *connects*
WALAH! No more disconnecting and reconnecting.
Moral of the Story: If your Galaxy constantly loses wifi signal, check if your router has a '5G' signal, connect to that instead.
Why this works? idfk. But it solved my problem, and hopefully this will solve someone else's problem :good:
If you have AT&T Smart Wifi installed on your phone then that's been known to cause problems also. I had constant wifi connect/disconnect problems until I uninstalled it.
wifi issues set router to use one channel only
I had disconnects a lot as well until I changed my router setting to use only one channel.
I've seen this problem on multiple phones that I've had. A quick restart on the router always fixes it. Lead me to believe it's the router
Sent from my GT-N7105 using xda app-developers app
Make sure you mom's router isn't set to lower then 50 DHCP Address: EX. 192.168.0.50
Sign into the router usually 192.16.0.1 or 192.168.1.1 from web browser. Go to DHCP Setting and make sure you see 192.168.0.XX (XX being the amount of device that can obtain a ip address to get access to internet). If it lower then 20 change to 50 or little higher.
Hope this helps
If my WIFI security is using WPA2 my GN2 will lose internet connectivity after some time of the screen being off. The only way to get it back is by turning off WIFI on my GN2 and turning it back on. I don't have this problem using WEP security in the router. However, using WEP security is less secure and severely limits WIFI speeds (can't use N speeds).
[Updated on 01/29/13]
I just want to provide a follow-up to this. I recently learned about the ARP table in my router which is responsible for mapping the IP address to its MAC address. If my GN2 doesn't access the internet for a certain period of time its IP address is removed from the ARP table and I have to toggle the WIFI on my phone to gain internet access again. I found that manually adding the IP/MAC address of my GN2 to the ARP table solved this problem. In a 24-hour period I've lost internet access 1 time after about 7 hours of inactivity (I was sleeping) and I gained internet access after a few minutes without having to toggle WIFI. I'm only sharing my own personal experience with this issue in the hopes it will help others. Below is the command I used to manually add a static entry into the ARP table of my router (model: Buffalo WZR-HP-G300N, firmware: DD-WRT):
arp -i br0 -s 192.168.0.101 38:AA:3C:85:1F:7C
I have WAP 2 and I don't lose internet connection. Yes I have a small delay when the SN2 wakes up but it connects right away. Go to your wifi setting and hit forget this network and re enter your pass key and see if this might help. You might have another device using the same ip address.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Jrockttu said:
If you have AT&T Smart Wifi installed on your phone then that's been known to cause problems also. I had constant wifi connect/disconnect problems until I uninstalled it.
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This did the trick for my father-in-law who was in town with is AT&T Galaxy Note II. His wifi kept turning off/on and disconnecting from my router and I couldn't save the network connection. My router is setup with an N network and a B/G network both with WPA2 , and he couldn't connect to either without the issue (everything other wifi device had no problems). I didn't uninstall the "AT&T Smart Wifi" just went into Manage Applications, stopped the services/application it was running and disabled the application. Immediately the phone was able to connect and keep connection with no problems. I didn't need to restart the router or do anything else.
Jrockttu said:
If you have AT&T Smart Wifi installed on your phone then that's been known to cause problems also. I had constant wifi connect/disconnect problems until I uninstalled it.
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Click to collapse
Was starting to have a panic attack at work as it would not connect at all to my WPA2 network and i just bought this phone of craigslist. Your advice of removing that crappy program fixed everything! Thank you!

Cannot connect to WiFi

Is anyone else having issues connecting to wifi? When I try to connect to wifi at my house, I get a pop-up error saying "AP currently not in use. Internet connection slow." If I click retry, it comes up again. If I click cancel, it says "Failed to obtain IP" and is not connected.
I have tried restarting my model/router with no luck. My Note 3, laptop, and other devices have no problem connecting to this wifi network...
I had a problem with wifi,but sounds different then your issue.Mine would just disable after obtaining ip.Samsung rep at best buy reflashed phone.That saved all data and apps.AND,it fixed wifi.If you can't work thru your issue,go to best buy or att store and get it reflashed.Cant hurt.
Good luck.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
OK, so went to the ATT store today and they reflashed my phone. Got home just now and tried to connect to wifi, same issue
Is anyone else having this problem?
Fixed it.
SOLUTION: I changed my router encryption type from WEP to WPA and now it works no problem
Try rebooting your router, I had the same issue the first day I got mine and a reboot fixed it.
zaures said:
Try rebooting your router, I had the same issue the first day I got mine and a reboot fixed it.
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Click to collapse
GReddySetGO said:
I have tried restarting my model/router with no luck. My Note 3, laptop, and other devices have no problem connecting to this wifi network...
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Click to collapse
This is a forum, please read. At the very least, read the OP if you're going to post something....
Anyway, already solved.
GReddySetGO said:
Fixed it.
SOLUTION: I changed my router encryption type from WEP to WPA and now it works no problem
Click to expand...
Click to collapse
Your neighbors are going to be pissed. They can't steal your wireless any more.
Seriously... You did yourself a favor... WEP = ROFL stupidity for wireless networks.
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Sent with my Galaxy Note 4
GReddySetGO said:
Fixed it.
SOLUTION: I changed my router encryption type from WEP to WPA and now it works no problem
Click to expand...
Click to collapse
No go for me I just Got my N4 from Verizon last monday and having the same issue u had. I changed my encryption from wep to wap and still same problem. Ima go to a verizon store and see if the "reflash" the phone like some suggest here. Might help my problem
Hi all,
I also experience the same issue from time to time. I have this happen on both my home network (WPA2-Personal) and work (WPA2-Enterprise). My fix is to either reboot the phone or activate Airplane Mode for about 20 seconds and then disable Airplane Mode. After doing that, wifi picks right up for me. YMMV.
I can try to get the exact error log messages from our networking technician at work if it would be helpful to anyone.
Out of curiosity, do any of you have other peripherals connected at the time you experience the issue (Pebble Watch, etc.)?
Same issue
With my GN4, I can connect to my home WIFI no problem and my GF's WIFI no problem but when I go to my Dad's, I CANNOT connect to his WIFI (Netgear WTG624v3) but both of my sisters with a Samsung Tab 3 and Samsung S4 CAN connect to my Dad's WIFI. It's really aggravating. Basically, when I try to connect, it says "connecting" "saved" Then it says "scanning", and says "connecting" "saved" again and again ..... But never connects.
I have tried changing just about every WIFI setting on his router including resetting the router. Tried removing the encryption making an "Open" network and STILL can't connect... and tried every encryption type provided and still nothing. I set the dynamic address range from .4 to .254 (on router) so I could try connecting with a static address to 192.168.1.2 / .3 and still nothing. I tried removing my GN4 browser cache, and setting it to airplane mode(20 secs)... nothing.
I'm at a loss.. given that both of my sisters with two different devices can connect to my Dad's WIFI but I can't with my GN4? But I can connect my GN4 to other WIFI networks, no prob.
UPDATE: Next, I will try downgrading the firmware version on the router to an earlier version. Hopefully, that's the solution. I will report my findings here.
Downgrading or using an older Firmware version for this Netgear WTG624v3 router DID THE TRICK!
If anyone else is having the inability to log into a WIFI router, try installing an older router Firmware version. I got the idea from here:
https://discussions.apple.com/thread/4564251?start=0&tstart=0

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