Wednesday, September 5, 2012

Samsung Galaxy S3 WiFi Connection Problems - FIXED

If you have a Samsung Galaxy S3 phone and are having trouble with the WiFi connection not staying connected to your wireless router then here is a simple and quick fix until Samsung offers up a fix via firmware (a Verizon rep says this should happen by mid September 2012, other rumors points to it being fixed by Oct 1, 2012).

Note: This is intended to fix issues where you can connect to your WiFi but the connection keeps dropping and/or you have very limited range. This assumes you were actually able to connect to your wifi router initially.

Until it is fixed for good via a firmware update, you need to open your phone dialer on the S3 and "dial" *#0011# and as soon as you hit the last # symbol you will see this screen below:


You are now in Service Mode on your S3. Next, click the "menu" button on your phone (lower left corner) to bring up the Service Mode menu screen as shown above. Then select the WiFi option, once you do you will see this screen:


Right above the Ping Test button you will see another button, in your case it will read "ON". Click that button and it will turn to OFF instead. This turns off the wifi power saving ability which is the cause of the dropped wifi connection. Once you do this you should stay connected to your wifi and have far better range while doing it.

It's hard to say if this drains the battery more, but my initial testing seems to show very little (if any) extra drain in this mode versus leaving it ON. The real benefit is that it makes the Galaxy S3 WiFi actually work like it should.

11 comments:

  1. UPDATE 9/7/2012: I got a new (replacement) Galaxy S3 from Verizon and on the new box was a sticker that read "updated" and on the phone itself was another "updated" sticker.

    It's been almost a full day using the new "updated" S3 and it works just fine on wifi. It connects to wifi and stays connected without dropping to 4G. The wifi bars remain unusually low (1 to 2 bars) in parts of my house when laptops, tablets, and old ThunbderBolts have full wifi bars but at least it stays connected.

    Checking version info from old S3 to new S3 shows that the Baseband Version went from 1535VRLF2 to 1535VRLG1 and the Kernel Version went from 3.0.8-618049 with a June 2012 date to 3.0.8-743127 with a July 2012 date.

    It looks like this is the newer kernel that was released via an OTA update in July. But for some reason the old S3 wasn't getting that update.

    A friend pointed out this link...

    http://forum.xda-developers.com/showthread.php?t=1788313

    ...which shows a newer leaked version as well which could be the next update I heard about from the Verizon rep in the store.

    Either way, if you can get one of these S3's that are marked "updated" on the box (sticker in lower left corner) it may solve your wifi dropping issues.

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    1. was having same problem ... updated router linksys n750 dual band router ...... problem now solved whew ... never dropped off wifi ever since... was running gband router previously

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  4. I face a similar problem, but its not because of the network strength. I tried your suggestion, but it does not work on my Galaxy S3.

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  5. I too tried this fix suggestion and it did not work. I was also in the same room as my router and it had full signal but it keeps disconnecting.... Very frustrating! Galaxy S3 on sprint is what I am using.... The router is a Netherlands WNDR3400 duel band router and I usually have it connected to the 5GHz, but it disconnects on both 2.4 and 5GHz... I have my phone up to date with all the latest updates. HELP! PLEASE!

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    1. Lol damn autocorrect the router is a NETGEAR

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  6. Had the same problem for months then I disabled the firewall on the modem and updated its firmware and it has been perfect ever since. Its great.

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    1. how do I disable firewall and update the firmware on my modem?

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  7. Doesn´t work, wifi keeps disconnecting on ANY wifi connection.

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  8. It's extremely frustrating. I have to reset my router to get the wifi back on my galaxy 3. The above suggestion did not work for me. I have never had a phone to do this before. I have switched from Sprint to Verizon yet my Sprint never did This.

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