Wifi obtaining ip address loop - Galaxy S III Q&A, Help & Troubleshooting

Hello since I update my samsung galaxy SIII to 4.2.1 when I try to connect to my wifi network my device keeps telling me "obtaining IP address" and nothing more, never conects to my network. that is weird because it was working before the update. There is a way to fix this? I dont want to set and static IP address it seems stupid to me. I need help to fix this please. Thanks you and pardon my english (its not my native language).

I had the same problem with a Galaxy Tab, I'm not sure if this'll fix it, but if your phone's rooted, if you go in to the main root, misc, dchp and delete the DHCP list, that may well fix it.

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Galaxy S2 is able to connect to wi-fi router but can't access Internet ??

hi,
I've linksys wi-fi router model WRT54GH in my home & it has a good amount of signal strength to cover entire area.
My recently bought galaxy S2 is able to identify linksys wi-fi access point & connects too with the IP assigned to it, also at wi-fi settings connected being displayed.
Now when I try to access Internet (any url google/FB), it doesn't connect at all.
I tried almost everything about router configuration, restart etc. but with no success
can someone plz help on this ?
shantanu_d said:
hi,
I've linksys wi-fi router model WRT54GH in my home & it has a good amount of signal strength to cover entire area.
My recently bought galaxy S2 is able to identify linksys wi-fi access point & connects too with the IP assigned to it, also at wi-fi settings connected being displayed.
Now when I try to access Internet (any url google/FB), it doesn't connect at all.
I tried almost everything about router configuration, restart etc. but with no success
can someone plz help on this ?
Click to expand...
Click to collapse
In my case the problem was with frozen "WiFi sharing" in combination with juicy defenders "Location" fearure. It seems such combination is dangerous. Solutin (in my case):
1. defroze
2. remove all wifi networks
3. reboot (for "clean" frozing)
4. make WiFi sharing frozen
5. reboot again just for fun
Try to check your router's MAC address restrictions. In my router, as security, I have to add MAC addresses of each device to share internet. They take IP's, connects etc. but does not have accesses to internet
as above, check that there is no MAC filtering set up.
one other thing it may be is the security settings, if you have a WEP Key to access the router it may need the Hex conversion of your key depending on what level of security you have (64bit or 128bit for example)
shantanu_d said:
hi,
I've linksys wi-fi router model WRT54GH in my home & it has a good amount of signal strength to cover entire area.
My recently bought galaxy S2 is able to identify linksys wi-fi access point & connects too with the IP assigned to it, also at wi-fi settings connected being displayed.
Now when I try to access Internet (any url google/FB), it doesn't connect at all.
I tried almost everything about router configuration, restart etc. but with no success
can someone plz help on this ?
Click to expand...
Click to collapse
Try setting up a static IP address for your phone, I presume your network is a 192.168.1.0, go into router settings and LAN setup, give your phone the address in a static DHCP assignment of 192.168.1.5, or any other address in the same subnet your in. Some SGSII's have problems with dynamic DHCP for some reason, some NS had the same problem too,
Sent from my Sammy Galactic S2 Beastly Device
I have a similar problem and I fix mine temporarily by turning my wifi off, then in wifi settings > advanced, I change wifi sleep policy from 'never' to 'only when the screen is off'. However I have to do this every time I want to use wifi so it can become quite annoying sometimes.
So I can get through however only for a short period of time as it seems as long my Galaxy S2 keeps turning off my wifi even though it's on :/
I had exactly the same issue on Linksys E4200 with my laptop, could connect to network, even to router's attached storage, but not to internet. Restart helped
On SGS2, I couldn't connect to the router at all at first, but fixed this by switching from WPA2/WPA mixed mode access protocol to WPA2 private. But I guess this is not exactly your issue.
SiSL said:
Try to check your router's MAC address restrictions. In my router, as security, I have to add MAC addresses of each device to share internet. They take IP's, connects etc. but does not have accesses to internet
Click to expand...
Click to collapse
Thanks for the suggestion but MAC restriction is already disabled at router
Robsso said:
I had exactly the same issue on Linksys E4200 with my laptop, could connect to network, even to router's attached storage, but not to internet. Restart helped
On SGS2, I couldn't connect to the router at all at first, but fixed this by switching from WPA2/WPA mixed mode access protocol to WPA2 private. But I guess this is not exactly your issue.
Click to expand...
Click to collapse
Yes, you are right this is not an issue for me.
In fact my SG2 being assigned with an IP address from 192.168.1.xx subnet.
Also at a same time my laptop connected with an IP from same subnet able to ping SG2.
OccasionalDroid said:
Try setting up a static IP address for your phone, I presume your network is a 192.168.1.0, go into router settings and LAN setup, give your phone the address in a static DHCP assignment of 192.168.1.5, or any other address in the same subnet your in. Some SGSII's have problems with dynamic DHCP for some reason, some NS had the same problem too,
Sent from my Sammy Galactic S2 Beastly Device
Click to expand...
Click to collapse
My SG2 being assigned with an IP address from 192.168.1.xx subnet.
So I think IP addressing may not be an issue.
Also another thing I tried was, at a same time my laptop connected with an IP from same subnet able to ping SG2.
So wi-fi router may not be an issue here, whats say ???
Even I am facing the same issue at my office network. I am able to connect to the wireless network but if I try to access any app I cannot browse. This is really frustrating looks like some issue with the modem drivers.
I was able to browse on another wifi created virtually by mobile tethering. This looks like a major bug with the current firmware. Another interesting thing to note is that the Wifi network has a hidden SSID and uses WPA2 auth scheme.
I have seen a Galaxy S able to connect to the same n/w without any issues.
Has anyone figured out a solution to this one ?
Hi, thanks for your reply.
I am yet to figure out a solution for this
Even I am also agree on the probable issue with modem driver.
I've D-link modem.
Are you aware of anything about this modem that can be reconfigured to get this worked ... ?? pl let me know
The wifi router at my office is Cisco Aironet 1200 Series, anyone else facing this issue ?
I'm having the same problem at work connecting my SGS2 with v2.3.3 Official Firmware (customized for Orange service provider) to a Cisco Aironet 1130 AP. I can see that the Galaxy authenticates with the AP correctly and gets IP from the DHCP server, but it cannot send or receive any traffic, although the phone stays connected and authenticated. At home, I use an Atheros based Fonera with DD-WRT without any problem.
As I'm the company's network administrator, I will try to further investigate this problem, but it seems like some kind of incompatibility between the devices or misconfiguration ....
Basuk said:
The wifi router at my office is Cisco Aironet 1200 Series, anyone else facing this issue ?
Click to expand...
Click to collapse
try turn off the wifi, turn off the mobile data and turn on the wifi again
It seems the SGS2 sometimes has problems with DNS.
Try a static IP and use 8.8.8.8 as second DNS server, which is a free Google DNS server.
This fixed MY problems
I rooted my SGS2 and voila wifi worked at my office finally I have been able to find a solution.. love my SGS2 the Beast...
I'm having this same problem..
I think I've tried all the solutions above, but one (Sorry - noob question):
Rooted?
is there a firmware patch or something that I should know about?
Anyone got any other ideas?
ETA:
I can connect to hotspots (DHCP) and at home (Have to set it to static tho)
No internet
AP works - Laptop and i8910 (had to set static and advanced settigs etc). I've rebooted it a few times, set DHCP on and off. DHCP seems to be running on the router
viqles said:
I'm having this same problem..
I think I've tried all the solutions above, but one (Sorry - noob question):
Rooted?
is there a firmware patch or something that I should know about?
Anyone got any other ideas?
Click to expand...
Click to collapse
This is an issue with SGS2 with wifi server using authentication protocol TPIK, if you use AES as encryption then it will work without any issues.
That should be a setting in my AP? I can't see it...
If I get a new non-crappy AP is that likely to solve my problem?
ETA:
Ah - that's a WPA thing? Mine only seems to do WEP - is that right?

[q] pl help! Wifi connectivity problem - sii

Hi,
I have just bought a SGS-II today and i cannot connect to my Home Wifi.
When i press connect , the following happen : Connecting -> Obtaining IP Address -> Remembered -> Disabled, Secured with WPA2 PSK.
This all happens in a second.
It detects the network but does not connect.
I have a Cisco Linksis WRT120N Router with WPA2 [AES] Security. I can access the internet form all my other Laptops , Mobile Phone , PC , but SII cannot.
It has 2.3.3 Stock ROM . I dont think there is any problem with my router as i can connect on all my other devices.
It is very annoying because without WiFi there is no fun in the SII.
Pl help me solve this serious problem as the SII is a wonderful device.
Any Help will be appreciated !
I am having this SAME EXACT Problem. Is there anyone that can help with this? Perhaps this is more of a widespread issue since I have this same issue as well.
Anyone experience this at all?
I'm with SGS2 and I connect without problems to a WPA2/PSK (AES) WiFi, so the phone should work.
How have you loaded the configuration of the WiFi?
In my case since is hidden, I've added it manually (maybe you could try to do so if you configured automatically). Also check the MAC if you have a MAC Filter (maybe is not included and the phone wont connect).
It should work from stock, so maybe the problem is something in the configuration of the device.
I would really like some help as well... Pls somebody help

Issue obtaining ip address - linksys router

Hello there,
I dont know what happened, but suddenly the GT 10.1 stay trying to obtain the ip address. The issue was presented after update the last version to 3.2 rom but no right away, some days after. The router is from home, and i've read the solve is to connect through static ip, but i dont like this option.
Anybody has have this issue.
Thanks in advance
I solved changing the patterns from the router.
Sent from my X10i using XDA App
When ever this happens with me, i just turn off and tun on the wifi in the tab. That works fine for me.

[Q] Samsung Galaxy S2 allocate the device as multiple addresses on wifi

Hi all
I have had this samsung galaxy for about 3 month the fault I am having is that when I am at home my wifi on my samsung galaxy s2 works fine soon as I go to work and connect via wifi it finds an ip address on the network connects via dhcp but randomly it takes other ip on the network like eg. 192.168.1.104 which is a static ip on the network as well as this it takes the static server ip as well could this be a application issue or is this a fault with the phone.
I have got gingerbread 2.3.5 install custom rooted chainfire basic rooted device.
I can try to reset the phone back to factory and see if this helps is there any other suggestion that you would recommend anyone please I'm stuck
thanks in advance cheers
timothyshrimp

[Q] Galaxy Tab 10.1 Static IP Issue

I'm trying to find out how to set a static IP address into my Galaxy Tab 10.1. I've read page after page after page on the net and I can't find a solution. The reasoning behind my question is that I need to connect to a wireless AP that does not hand out DHCP addresses. We use a PPPoE connection. My tab will try to connect to the AP with the WEP key but it just stays at 'Obtaining IP Address'. Well.... I WONT get an IP address from the AP. Since it never truly connects to the AP, I can't connect to PPPoE. Also, I have a rooted tab since to use PPPoE, I need SU control. That much is done. I'm just having problems doing something that I would have thought would be easy.
I long press the AP name and go to 'Advance' and I can choose 'Static IP', but the IP, subnet, gateway and 'Save' are all grayed out. I can't make any changes whatsoever. Please help me...... I'm about to give up since I can't use this thing for what I bought it for......
Thanks for any and all responses I get.

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