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Old July 3rd, 2012, 09:21 PM   #1 (permalink)
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Default Samsung galaxy s3 WIFI problem?

Hello. Since I bought my Samsung galaxy s3 I cannot connect to my router. My carrier is sprint. My dad's phone is also from sprint but it is a different phone. Both phones attempt to connect and fail. They keep trying to connect.

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Old July 3rd, 2012, 09:48 PM   #2 (permalink)
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Hi and welcome to the forums!

First, I'd like to inquire if you've been able to connect other devices to this wireless network? If so, has anything changed besides the new s3?

If you are using WPA2, make sure you've got the settings correct in the wireless setup...

These are just some of the more "Slipped my Mind" errors that sometimes happen.

If that's not the case, I'm sure someone can help you out further... those are just my quick thoughts on the matter.

Best of luck!
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Old July 3rd, 2012, 09:53 PM   #3 (permalink)
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Yes I have tried. I even changed the router settings from WPA2 to WEP and that still didn't work.
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Old July 3rd, 2012, 11:18 PM   #4 (permalink)
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silly question but what type of router, and have you tried rebooting the router?

with the fact that two different phones refuse to connect..it is unlikely that it is an issue with the phones
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Old July 3rd, 2012, 11:28 PM   #5 (permalink)
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I have tried rebooting it and that didn't make a difference. It is a 2wire router from att.
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Old July 4th, 2012, 01:03 AM   #6 (permalink)
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Have you flashed an updated firmware to the router?
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Old July 4th, 2012, 11:26 AM   #7 (permalink)
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I too have the new S3 (sprint) and have been experiencing issues with connecting to some routers. Latest one was at a favorite restaurant. Everyone else at table could connect. My device would not. Signal strength was good too.

Router was a Belkin, dual mode 2.4 and 5 GHZ model. Would not connect to either band.
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Old July 4th, 2012, 02:33 PM   #8 (permalink)
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No I haven't. I don't know how.
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Old July 6th, 2012, 11:19 AM   #9 (permalink)
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Hey guys please help, I got S 3 international version on 25th June, my WiFi gave some probs but started working on its on the next day after few failed attempts, so i didnt pay much attention, then i updated phone over OTA few days later via wifi, and the very next day my phone did not start, I submitted my phone to Samsung Service center, they reset the phone, installed the default firmware version and phone is working fine again, but now its not connecting to Wifi, kies is showing me that firmware update is available, please suggest me what to do, in my wifi settings, after i enter the password, it shows "connecting", "authenticating..." and then i get message "stored,saved" then it connects again, this keeps on happening.. please help..
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Old July 6th, 2012, 11:57 AM   #10 (permalink)
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Have you tried changing the channel your router uses? I had all sorts of problems connecting my old gs2 to my wifi and it turned out that my house phone was using the same frequency as the router and was interfering. After changing the channel from 7 to 11i I haven't had any problems either with the s2 or s3
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Old July 6th, 2012, 04:03 PM   #11 (permalink)
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I have had a similar problem. I can make a connection but within 5 minutes, I lose the wi-fi connection. I have an Android tablet that has no issues with the same router connection, providing very stable and consistent Wi-fi to all our wireless devices.
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Old July 7th, 2012, 08:54 AM   #12 (permalink)
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I have a very similar problem.

My router
HW Revision 1.1 VENDOR Thomson
BOOT Revision 2.3.0 SW Revision STBA.01.50
MODEL TWG870U Software Version STBA.01.50

Standard Wifi settings (auto channel select)

I have constantly problems with the Samsung and I am tempted to believe that it's an issue with the WiFi module because I don't have any other issues with any other WiFi device. I use 2 iPhones 2 Laptops and sometimes a tablet all over the same hotspot and neither of them are showing the behaviour like the SGS3 does.

I can connect to the AP and have full bar (sitting directly next to the router) and don't have a connection to the internet. SGS3 status shows connected and IP address 192.168.0.18 but the router shows me 10.56.4.79 under the same MAC address. Now you might think that this is router config problems but why is this not happening with any other device?

I will now try to change the band and play around with the router settings but to be fair, that very much looks like a strange DNS/wifi module problem inside the SGS3.

In addition to the above, when I am in the next room, the iPhone has lets say 3 bars, the sgs3 has baaaaaaaaaaarely 1 bar.

Does anyone have similar problems? Would be interested whether Samsung acknowledged this problem already or whether I just have a "monday" device...

Cheers guys
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Old July 7th, 2012, 09:27 AM   #13 (permalink)
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I also had a wifi connectivity issue with my G3. My E4GT connects easily to wifi and doesn't drop the connection. The G3 scans and finds the router but won't authenticate. It continues scanning and then displays and authentication error message. I use wifi a lot and this is a deal killer for me, in addition to a couple of other issues, with the G3. Read somewhere that someone changed their router setting and turned on Dynamic Routing which made their wifi work.

I upgrade my phone every year so I've had several smartphones. This is the first new phone I've had that has so many glitches. I don't expect a new phone to be perfect, but I only had the G3 for a few hours and was disappointed quickly with some features. My E4GT has been a great phone for me. It's a business phone and gets heavy use with email, text, internet, scanning docs, navigation, camera, etc.

I had Sprint reactivate my E4GT. The G3 is going back to Sprint. I can wait a little longer so the bugs can be worked out on the G3.
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Old July 7th, 2012, 11:16 AM   #14 (permalink)
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heres the fix. Got it from a uk website but worked perfectly on my sprint s3

1 open phone dialer
2 dial *#0011#
3 when u see servicemode screen click on fixed menu button bottom left
4 select wifi
5 itll be in wifi power save mode. Click that off
6 thats it. If u have a router saved choose forget then reconnect so it refreshes
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Old July 7th, 2012, 09:41 PM   #15 (permalink)
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@hammer...thanks for the tip. I received my G3 on July 2. When the phone wouldn't connect to wifi, I googled G3 wifi and found many others were experiencing the same wifi issue. I called Sprint tech support and the tech hadn't received any calls about it. He really wanted to help so he also googled the issue while I was on the phone with him. He saw there is a problem with G3's wifi. He actually provided me with the tip you provided but it didn't work. I've read other people tried the fix but it didn't work for them either. Sprint said the wifi issue is with Samsung so he connected me with Samsung tech support. The Samsung tech couldn't fix it either. She wanted me to send the phone back for repair, but I told her I was going to return it to Sprint. I got the impression that Samsung knows there is a problem with G3's wifi.
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Old July 7th, 2012, 10:19 PM   #16 (permalink)
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There's a few posts on this problem over in XDA too. I am having the issue as well (AT&T phone).

I called Samsung, and they said "Google will have to fix it. It is a software issue. WE do the hardware". uh...like it couldn't be a hardware issue.

Anyway, someone else in one of the threads there says they have had several conversations with Samsung, and that they are aware of it and working on it. Who knows though...

I sure hope it gets fixed.
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Old July 8th, 2012, 01:15 AM   #17 (permalink)
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Possible solution from XDA go into your router settings for QoS then enable WMM. Please let me know if this works, as I would love this to be the solution for the wifi issues.
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Old July 8th, 2012, 01:20 AM   #18 (permalink)
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I own a BELKIN router N+ and FYI, if you have a personal firewall on your computers, I would suggest you disable the firewall on the router, as it caused me HUGE amounts of headaches.. I have been using belkin routers for years and never have I had a problem with them besides the firewall..

I run a 25MB line and have 2 laptops, 1 desktop, 2 Ps3s, 1 Wii, 2 blackberrys and now my Galaxy S3 all connected to the router, no problem at all..

if disabling the firewall makes you uneasy, just hide the SSID broadcasting, that way if somebody doesn't know the name of your network, they can't connect or wouldn't know it even exists..
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Old July 8th, 2012, 07:44 AM   #19 (permalink)
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We have tried all the SGS3 "solutions", but nothing works.
The problem is a poor WIFI signal comming out of the SGS3.
Even if the WIFI router signal is ok, the connection cannot be made, because of
the poor signal (works about 2 - 4 meters) of the SGS3.
How to check it:
- set SGS3 to WLAN-Hotspot
- install "Wifi Analyzer" (from Play Store) on another android phone
- now we can check the signal of the rooter, and the SGS3

Still waiting for a solution. Or is it a hardware problem
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Old July 8th, 2012, 10:29 AM   #20 (permalink)
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Quote:
Originally Posted by hammer00223 View Post
heres the fix. Got it from a uk website but worked perfectly on my sprint s3

1 open phone dialer
2 dial *#0011#
3 when u see servicemode screen click on fixed menu button bottom left
4 select wifi
5 itll be in wifi power save mode. Click that off
6 thats it. If u have a router saved choose forget then reconnect so it refreshes
We received 2 Verizon s3s yesterday. One was fine, the other had WiFi issues,it would site connected to our hone network, but mail and facebook wouldn't load. This fixed the problem. Thanks

Well, it turns out that it works for a while, but once it loses the wifi connection (leave the house) my husband has to do it all over again when we get back. IT IS NOT the router. We have 2 identical S3's (32GB), and mine has no troubles. We'll be calling Verizon tomorrow.
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Old July 9th, 2012, 11:12 AM   #21 (permalink)
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Well, seems to me that this is a fairly common problem, but maybe not a high percentage of folks. Not seeing enough complaints. Although I am certain that if it just disconnects, then reconnects, many people won't even know they have the problem.

At any rate, one person over on XDA exchanged his phone, and he says the new one is fine.

I'm going to give that a try.
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Old July 9th, 2012, 11:41 AM   #22 (permalink)
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Quote:
Originally Posted by ewingr View Post
Well, seems to me that this is a fairly common problem, but maybe not a high percentage of folks. Not seeing enough complaints. Although I am certain that if it just disconnects, then reconnects, many people won't even know they have the problem.

At any rate, one person over on XDA exchanged his phone, and he says the new one is fine.

I'm going to give that a try.
The problem is that it doesn't reconnect. It disconnects and then you don't have wifi until you follow the *#0011# process. Very frustrating. This is not all the phones, but it is across carries so who knows. Unfortunately we are on Verizon, so they wont be at the stores until Wed, and I don't know if they will even have any 32GB at the stores. So an exchange may not be a quick fix for us.
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Old July 12th, 2012, 03:53 PM   #23 (permalink)
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Thanks everyone for your help. After hours of trying to get it to connect I ended up buying another router and it works now.
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Old August 28th, 2012, 07:22 AM   #24 (permalink)
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Unhappy Its the S3 thats the problem

I bought the S3 about three months ago, first it work perfectly, but after som firmware upgrades the wifi starts to bugg.

And how do i know it's the S3 thats the problem:
- I noticed i couldnt connect to some routers(tried several) but on the same routers i've mananged to connect with other phone(S), and my laptop.
- I cant find the networks, dispite my laptop have full strength, however if i get within 1m range to the router i find the network but it's really bad connection-strength, and i loose the connction often.

I dont know whats causing this problem but it's obviously the S3 device thats the problem, And the problem first occured after the firmware upgrades. Dont know if I should turn it in for repair, or downgrade.
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Old August 31st, 2012, 02:28 PM   #25 (permalink)
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this is a known bug...but on jelly bean. Weird you are seeing it. In jellybean the wifi icon just turns gray after a few minutes and stops transmitting. You have to disable/enable wifi for it to work again. Worse part is it only happens on some routers so its harder to debug.

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Old September 3rd, 2012, 04:52 PM   #26 (permalink)
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I had the same problem with my SGS3 - same as the video where it continuously tries to connect and authenticate then comes back with authentication error. It would work with some routers but not mine at home. I spent hours trying all the posted fixes. I changed settings in the router including turning all security off. I also tried manually inputting the MAC address and many other suggestions such as disabling wifi and removing the battery.

Finally, when I tried it again selecting WPS security and entering the wifi PIN from the router it decided to work. I know I had tried that several times before with no success but for whatever reason it worked this time and seems to disconnect and reconnect with no problem. Arrgh! Seems to be something temperamental with the phone.
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Old September 4th, 2012, 07:14 PM   #27 (permalink)
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Quote:
Originally Posted by ewingr View Post
Well, seems to me that this is a fairly common problem, but maybe not a high percentage of folks. Not seeing enough complaints. Although I am certain that if it just disconnects, then reconnects, many people won't even know they have the problem.

At any rate, one person over on XDA exchanged his phone, and he says the new one is fine.

I'm going to give that a try.
Quote:
Originally Posted by coleoptera1 View Post
The problem is that it doesn't reconnect. It disconnects and then you don't have wifi until you follow the *#0011# process. Very frustrating. This is not all the phones, but it is across carries so who knows. Unfortunately we are on Verizon, so they wont be at the stores until Wed, and I don't know if they will even have any 32GB at the stores. So an exchange may not be a quick fix for us.
Quote:
Originally Posted by boom10ful View Post
Thanks everyone for your help. After hours of trying to get it to connect I ended up buying another router and it works now.
Quote:
Originally Posted by Naquden View Post
I bought the S3 about three months ago, first it work perfectly, but after som firmware upgrades the wifi starts to bugg.

And how do i know it's the S3 thats the problem:
- I noticed i couldnt connect to some routers(tried several) but on the same routers i've mananged to connect with other phone(S), and my laptop.
- I cant find the networks, dispite my laptop have full strength, however if i get within 1m range to the router i find the network but it's really bad connection-strength, and i loose the connction often.

I dont know whats causing this problem but it's obviously the S3 device thats the problem, And the problem first occured after the firmware upgrades. Dont know if I should turn it in for repair, or downgrade.
Quote:
Originally Posted by Tagsfordroid View Post
this is a known bug...but on jelly bean. Weird you are seeing it. In jellybean the wifi icon just turns gray after a few minutes and stops transmitting. You have to disable/enable wifi for it to work again. Worse part is it only happens on some routers so its harder to debug.

-tagsfordroid.com
Quote:
Originally Posted by paulmcc88 View Post
I had the same problem with my SGS3 - same as the video where it continuously tries to connect and authenticate then comes back with authentication error. It would work with some routers but not mine at home. I spent hours trying all the posted fixes. I changed settings in the router including turning all security off. I also tried manually inputting the MAC address and many other suggestions such as disabling wifi and removing the battery.

Finally, when I tried it again selecting WPS security and entering the wifi PIN from the router it decided to work. I know I had tried that several times before with no success but for whatever reason it worked this time and seems to disconnect and reconnect with no problem. Arrgh! Seems to be something temperamental with the phone.
try this: LINK Look at POST #9

basically you need to set your router up for "dynamic routing"

fixed it for me, you don't need to buy a new router or do those other stuff
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Old September 21st, 2012, 05:44 PM   #28 (permalink)
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OK, I was having the same problem with a new 'replacement' S3 I just received today. None of the above fixes worked for me, but this did:

When you are on the main WiFi screen (available networks listed) tap the Menu key.
Tap Manage networks
Tap your home network (the one that won't connect)
Tap edit
Reenter your password here and tap connect

OK, but... I tried doing this again to write up this post and got the authentication error again.

So if that doesn't work for you, try forgetting your network, selecting it again, and retyping your password. I had originally used copy/paste to enter my 26 character password. When I entered it using the keyboard, it connected and stayed connected, even after a reboot.

Good luck!
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Old September 29th, 2012, 04:57 PM   #29 (permalink)
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Default "wrong" subnet causes GS3 no internet

I was having the problem. GS3 said it was connected. Strong signal. All the other devices happily talking to the internet. GS3 would not.

I had been messing with rebooting my switch and DSL modem and generally getting back up to speed after mistakenly resetting the switch to factory defaults. DHCP had given everything a 192.168.x.x address. After some reboots everything had 10.0.0.x.

Noticed the misbehaving GS3 was still coming up with 192.168.x.x from DHCP for some reason. Switched it to static with a 10.0.0.x address and bingo! Problem solved. Network accessible.
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Old September 30th, 2012, 11:16 AM   #30 (permalink)
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Well, that worked yesterday. Today no joy. My GS3 once again is connected with strong signal but can't get to the internet. DNS?
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Old September 30th, 2012, 11:50 AM   #31 (permalink)
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Sorry if this posts twice. Didn't know I was logged out last time.

I found that my first DNS server was still set to 192.168.x.x so I changed it to 10.0.0.1. I also changed the second DNS server from 4.4.4.4, which doesn't ping, to 4.2.2.2 on a recommendation from Raj elsewhere. Not sure which fixed it (both?) but I'm back on the web now.
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Old September 30th, 2012, 12:16 PM   #32 (permalink)
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Quote:
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Sorry if this posts twice. Didn't know I was logged out last time.

I found that my first DNS server was still set to 192.168.x.x so I changed it to 10.0.0.1. I also changed the second DNS server from 4.4.4.4, which doesn't ping, to 4.2.2.2 on a recommendation from Raj elsewhere. Not sure which fixed it (both?) but I'm back on the web now.
I normally use Google's public DNS servers in my router since TWC's DNS servers are horrible and Google's are always up.

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Old September 30th, 2012, 07:21 PM   #33 (permalink)
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Quote:
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Thanks everyone for your help. After hours of trying to get it to connect I ended up buying another router and it works now.
This turned out to be my wifi issue.

If you search under my username you will me saying my wifi speeds connecting to my home wap at less than 1 Mbps.

Now I have a few other wifi devices from laptops, PS3 even my previous android phone. All connect and have no problem with speeds.

So I assumed it was the phone so i went back to my local att store and swapped out for a brand new one.

Went home and sure enough... same. Crappy speed.

I had an older N wifi wap so I booted that up. Connected and viola!!!! Normal speeds!!!

Connected back to the newer linksys wap. Crappy speeds. So I returned it back to factory defaults. Again... same crappy speeds.

So I just left the older wap running with the newer wap. Others in the house had no issue. Then I set the older N wap to run or accept N clients only. The Linksys willaccept all clients.

Problem solved... so bottom line. Try a different wap...
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Old October 4th, 2012, 05:52 AM   #34 (permalink)
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Thumbs up Galaxy S3 router connectivity solution

Like many others I have had problems with my S3 dropping the connection to my wireless router and refusing to connect again.

Having searched various forums I tried the generally suggested solution of keying *#0011# to reach the service area, hitting 'menu', selecting 'WiFi' and then switching off Wi-Fi Power saving. Didn't work for me.

Before I moved to returning my phone, I thought I'd have a poke around my router's internal management functions. (My router is a BT Homehub) Logged into the router and eventually found the router's list of connected devices.

What I discovered there was that my S3 certainly appeared in the list - but duplicated dozens of times. The other devices in the list, including 3 PCs, a Samsung tablet and my wife's Galaxy S3 all appear just once.

I then deleted the instances of my S3 in the list. I found that by deleting the first one and clicking 'Refresh', the whole lot went. (It may be different on another model router)

Then I tried reconnecting my S3 and, lo and behold, it connected. (By the way, it stays connected even with WiFi Power Saving 'On').

What I have noticed is that WiFi keeps scanning, even when I'm connected to my router. I don't know if this is normal or correct or not.

What I am seeing, however, is after a few minutes the router device list is again showing multiple iterations of my S3, with two of them showing as 'connected'. The connection is still up on my S3. If it goes again I now at least seem to know what to do and it's presently only a minor inconvenience/irritation.

Of course, I'm not sure whether all this is the fault of the S3 or the router. If anyone has any thoughts on this multiple device listing I'd be interested to know.

Hope this might help somebody else.
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Old October 31st, 2012, 12:09 PM   #35 (permalink)
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I think this is not just a Galaxy S3 problem but a Samsung problem. I had purchase a Samsung Note which had S H I T reception so I sold it and just bought the new Samsung Note 2 4g or LTE as some call it out of Hong Kong. Get back home to connect via wifi and find that it only manages to find and hold a connection 4-5 feet away. Any further and forget it. I have a new high end wifi router from Asus model #RT-AC66U. My x201s Thinkpad connects from any part of the house along with the iPhone 5 and the new iPad 3 except for these Samsung smartphones? What gives???

At my shop I have the high end Apple wifi router and same thing there as well. 4-5 feet and you are good but step away any further and no connection? WTF?? My employee also has a Samsung Note so I borrowed her phone to try out as well and the results were the same
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Old November 9th, 2012, 10:55 AM   #36 (permalink)
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I ran into a similar issue when I got a new router with my Galaxy II Skyrocket. I fixed the issue by disabling Enhanced interference management under wireless advanced settings. This may help you if your router has a Broadcom chip, mine has a Broadcom BCM4331
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Old December 18th, 2012, 01:16 AM   #37 (permalink)
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Default Dual Channel Routers Are The Cause

A known issue and is possibly being looked at by Verizon. It's the 5Ghz band that GS3 VZW phones cannot do and cause a problem.

I used wifi analyzer (an app in the market) to get the best channels to use on both 2.4 and 5.0 Ghz. Seemed to work for both phones (GS3).

The auto feature maybe the issue and our phones cannot deal with it but not all GS3 models have this issue. Appears Verizon does not have the option to accommodate 5.0 Ghz. It was suggested that it's ability to utilize the 5.0 Ghz band would interfere with the LTE frequency. I dunno, but hopefully they fix it soon.
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Old January 3rd, 2014, 10:32 PM   #38 (permalink)
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Laugh I fixed my connection issues.

I was finally able to get both my Galaxy S 3 and my Samsung Note tablet to connect to a Belkin N1 Wireless Router. Just in time too, because I was about two seconds away from buying a new router in disgust.

Here's what I did:

1. When connecting to the network on your phone or tablet, click the box that will show you advanced options.

2. In stead of connecting with DHCP use a static IP Address.

3. To Choose my IP Address I had to go into my router management software with my laptop and see the ip adress pool of numbers it was assigning other computers and devices. I picket the top two numbers (in my case XXX.XXX.X.100 and XXX.XXX.X.99) and punched them in. I picked the top two because my router assigns the lowest free numbers to new devices, so the highest numbers won't conflict.

4. Now I can connect and surf the web just fine and don't have to buy a new router, and the router continues to dynamically assign IP adresses to my other devices (laptop, other family member phones, etc.)

Let me know if this helps you out.
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