Issue with the Wi-Fi - Galaxy S III Q&A, Help & Troubleshooting

Basically my GS3 regularly drops the Wi-Fi connection in my house, however I'm not too sure weather its the phone or the router.
I've only actually seen it happen whilst using the Wi-Fi, I've been texting and it doesn't happen but then browsing Facebook will cause it to disconnect. It disconnects for about 5 seconds then reconnects, when connected the speed is fine.
I recently changed routers, I had a BT Home Hub 3 Rev 1 I now have the Rev 2 (Model B) and the connection was not dropping on the first one so its either a convenient coincidence or the router. I do, however, have a laptop, iPad, iPod and Nexus 7 that flawlessly work with the Wi-Fi.
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Try change the kernel.
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I'm operating on the stock latest GB international firmware.
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is latest ICS, not GB anymore
try turn off wi-fi saving mode ?
go phone > type *#0011# > menu > wi-fi > choose off

Sorry by GB I meant Great Britain not Gingerbread, I've turned that Wi- Fi saving mode off to see how it goes, thank you.
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Related

Atrix wifi switches off

Ever since I've had my Atrix, the wifi randomly switches off. My question is: should I exchange my Atrix, or is there a way to fix this?
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I am on the ATT network with no modifications done to my Atrix.
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Have you got any power saving stuff enabled?
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Unless it was enabled by default; no.
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I think the Atrix's WiFi radio is just weak. My mom's iPhone gets 3 bars of WiFi across the house from my router, but my Atrix drops to two bars if I just go into the next room. My Atrix struggles to hold one bar across the house. It sucks, but then again, I am using the crappy router that comes with U-Verse.
I exchanged some PMs with a moto dev about this a few weeks ago. I have a weak wifi signal at work and it will drop if I start using marketplace or facebook extensively. Part of his/her PM:
The "bars" shown by the UI have pretty big margin of error but RSSI reading less then -80 pretty much puts link at the lowest end of the budget. Also that does not account for interference really because Wifi is simple technology. So if you are at -80 at a workplace that has tons of 2.4 RF you will have disconnects and many retransmissions. This is why using of the market place probably triggers something in IC because you have lots of data and error counters go up a lot.
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If you're talking about a weak signal, there is nothing to do for that unless you increase your router's transmit power. If it drops, then go to wifi settings > menu capacitive button > wifi sleep policy > never.
I changed the wifi sleep policy and it still switches off randomly. The wifi will still switch off randomly even if I'm sitting right next to my wifi source.
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Bump?
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What battery settings are you using? Is it power saver? Set it to performance, if so.
Yeah the wifi still dies
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For the sake of testing, try disabling all security to see if the wifi connection is ok or not while sitting next to your wireless router. Also, could you let us know what kind of wireless router you are using (make and model#), and the type of securtiy you aare using, e.g. WEP/WPA/WPA2&TKIP, etc?
I have tried on 3 different modems, the current one I'm using is a wireless router WGR614 V9 with wpa security, I tried switching it off and I still had the same problem. The other 2 where in encrypted and still disconnected me. I also have the problem at ATT hotspots.
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that's not good. If you're up for it, reflash with stock and try wifi with nothing installed. If you still get the disconnects then get a replacement.
What does reflashing to stock entail? Is it as easy as ODIN?
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download from moto here. I haven't done it, but it looks more safe/less painful than an SBF flash.
I'm already at the latest version, through all the updates I've always had the same problem. I'm not seeing a stock firmware download.
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WiFi acting up

Ever since I bought the evo3d I have had issues with WiFi staying connected at home(haven't tested other networks). While I'm on my WiFi network browsing the internet and threads my WiFi icon will disappear and I lose connectivity. 3g will kick on for about 30 seconds then WiFi will pop back up and connect. It tends to happen every 5 to 10 minutes. No other device, including my og EVO, has this problem. Ideas? Troubleshooting? Replace phone?
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I had this issue with WiFi after original EVO got gingerbread. Change the channel on your router, I had to call Verizon, but been good since
Try turning off always on mobile data and mobile data when your on wifi. If you have automatic sync on I'd recommend turning it off as well when your on wifi. A quick way to achieve this is to use the htc data widget.
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"" Shooter on Deck""
You can try going to wifi settings, then hitting menu and advanced to turn on wifi performance mode. And you can change wifi sleep mode as well (one of the settings is fifteen minutes, so who knows)
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I'll give these a shot and see what happens. Thanks guys
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Well none of those settings helped but I have been on a different router for a little bit now and don't have any problems. So it must be a setting within my main router... Time to mess around with that yippy :/
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cctaylor410 said:
Well none of those settings helped but I have been on a different router for a little bit now and don't have any problems. So it must be a setting within my main router... Time to mess around with that yippy :/
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Like I said, just change the channel.
Ya ill give that a shot. Thanks
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Why is my works WiFi is fso slow when I have good signal?

It Works ok if im less than 5 meters away from server. But anything over that and its unusable. I work about 10 meters from the server. And I get at least 2 - 3 bars of signal out of 4. And I can't even post a comment on here. The speed is very fast for about 30 seconds and then ridiculously slow. It also struggles to connect. Tries about 3 or 4 times before it connects. I'm running cm10 on s3 but have this problem on stock, omega and checkrom. I had simular problems with the s2 aswell but not s1. I don't want to use wifi kill as its my work and it might not solve the problem. Is this the s3 working on networks with multiple apns? Is there a code I can call to turn off power saving ?? Can't force to 5ghz either.
Some advice would be massively helpful. I am getting very frustrated.
Thanks in advanced
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Any ideas anyone?
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The s3 q&a is far more helpful than this whole community?
Thanks to d4seeker and jje
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Ive fixed mine!
http://forum.xda-developers.com/showthread.php?t=1805572
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I believe the problem lies in network or in the wifi router. Maybe it's overloaded, try on-off cycling the router and see if it works then?
I kinda doubt that the issue is in the phone
I've fixed it now mate. Well chuffed. Don't know what it was really. But the method I used in above thread worked. It all started when I first rooted and flashed omega. Cm9 got rid of the authentication error (so it seems Sammy is at fault there) as for the WiFi range of about 3 meters and no connectivity after that distance. I'm not sure. Perhaps a problem deep in the settings I could not find. But completely wiping all settings worked. Not ideal. But confirmed working all day at work. So maybe a omega fault I don't know. Jus happy to have fixed it
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slking1989 said:
It Works ok if im less than 5 meters away from server. But anything over that and its unusable. I work about 10 meters from the server. And I get at least 2 - 3 bars of signal out of 4. And I can't even post a comment on here. The speed is very fast for about 30 seconds and then ridiculously slow. It also struggles to connect. Tries about 3 or 4 times before it connects. I'm running cm10 on s3 but have this problem on stock, omega and checkrom. I had simular problems with the s2 aswell but not s1. I don't want to use wifi kill as its my work and it might not solve the problem. Is this the s3 working on networks with multiple apns? Is there a code I can call to turn off power saving ?? Can't force to 5ghz either.
Some advice would be massively helpful. I am getting very frustrated.
Thanks in advanced
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It can be many problems! Maybe the ROM that you are runing has poor Wi-Fi support or maybe the phone is just "getting old" or maybe its the Wi-Fi set that sends you the signal!
I got a s3 which is not old but I've fixed it now. Thanks
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what the hell is going on with wifi after jellybean

How could they screw it up so badly. Ics no problem at all. Jb cant find wifi cant connect cant download from play store an so on and on.
Damn it.
My wifi is really good. Even far away from the router
endrit9 said:
My wifi is really good. Even far away from the router
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I am having trouble even finding wifi not to mention I am unable to connect to a couple wifis I used to use on a daily basis before.
Which router
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weird. mine is working fine, at least you know its something that can be fixed.
WiFi working on all my devices running Android 4.1.+
Try forgetting and rescan and reconnect. Sometimes that will help
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As above.....also router security settings might be causing a problem, I had that, in fact most Wi-Fi problems with the S3 seem to be router side from my observations, but that is just my humble opinion
On my old HTC HD2 after a Rom upgrade it wouldn't detect WiFi networks on channel 13. Our router was just on that channel. In the phone's WiFi settings go to Advanced and you should see something like channel range. Best of luck
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Wi-Fi analyser can be handy for seeing what's going on channel-wise

[Q] Wifi is terrible on b/g/n but okay on a

So, last week my Note started dropping wifi on my home 802.11g wifi. It was really bad, constant dropping, and when I was connected browsing was futile. The note said it had high signal strength, though.
I opened it up, and disconnected and re-connected the long antenna on the power button side. Didn't help.
I replaced that antenna and the rear cover with a "new" one off ebay. Didn't help.
I did find that I can connect to the work Wifi on 802.11a fairly well. 12-18 Mbs connection.
I also connect to the home wifi just fine if I'm within 2 feet of the AP. So, I presume that the note just can't transmit very well.
What should I do? is there another board or antenna that I should replace? Should I get a new motherboard? if so, where can I find one?
No one, eh?
Does Wi-Fi work in other areas than your home?
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cliefan said:
Does Wi-Fi work in other areas than your home?
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It works at my work. But only on 802.11a
I bought a dual band wireless router so I can run 802.11a at home, so now my frustration is only limited to stores and places that on run 802.11b/g
I still want to fix this. I may have to sell the phone and buy a new one.
Interesting... You didn't say whether you've tried a factory reset yet... But I would definitely try that. Also would try using Odin and going back to stock. Does it make a different whether Bluetooth is disabled (b/n and BT are very close in wireless spectrum)?
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cliefan said:
Interesting... You didn't say whether you've tried a factory reset yet... But I would definitely try that. Also would try using Odin and going back to stock. Does it make a different whether Bluetooth is disabled (b/n and BT are very close in wireless spectrum)?
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I have done a factory reset. no help. Bluetooth setting doesn't change a thing.
And I'm already stock, well verizon stock.

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