[Q] wifi problems - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

hi everyone....used to be a regular on here when i had my captivate, but then the s3 and my current s4 i never modded in any way......anyway...my att s4 will not keep my home wifi info and loses connection at times....is there any way to fix this?

If it only happens on your home Wi-Fi it's an issue with it. Try upgrading the firmware on it.

no
it has to be phone side becausee there are numerous things on wifi that are not effected

Few questions first to help,
Is your router a single or dual band router?
Does it drop and than reconnect, or is it dropping and not finding?
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it drops and then i have to retype the password
i think it is dual band

WiFi has been crap on my s4 since day one. Constantly drops or slows significantly on N or AC or G networks. I tried 3 routers and I have dozens of other devices with no problems. Countless times a day I have to toggle WiFi on and off to restore speed for another 5,10 or 15 minutes. YouTube is the worst. It just hangs when the phone drops to 1-3 Mbps down from 30. This happened on stock and all stock like ROMs. WiFi is this phones tragic flaw. The problem gets no attention online because people think it only pertains to dlink routers which is completely untrue.
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well
well i figured out my problem i think...it may be your problem as well
is yours on att as well?
if so there is a app called att smart wifi...this is what was causing my issues....however the phone(even stock) will let you remove this app

I am on att, I don't have it. I have something frozen called ATT hotspots. But nothing called Att smart WiFi.
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Related

Anyone else experiencing slow download speeds?

So me and both of my friend had trouble loading a YouTube video, it was so slow and kept pausing. We both have the Nexus 4 and were on wifi by the way. So we tried using another friends S III and it loaded the video fine. When I ran a side by side speed test he got a 19 mbs download and I could only pull 2. Is this happening to anyone else?
Edit: we were on the same wifi
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Did you try turning off Wi-Fi optimization in settings?
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outz said:
Did you try turning off Wi-Fi optimization in settings?
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Click to expand...
Click to collapse
No I kept it on but earlier in the day I was getting perfectly good speeds. Like sometimes my speed is fine and then sometimes it's slow.
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Ngo93 said:
So me and both of my friend had trouble loading a YouTube video, it was so slow and kept pausing. We both have the Nexus 4 and were on wifi by the way. So we tried using another friends S III and it loaded the video fine. When I ran a side by side speed test he got a 19 mbs download and I could only pull 2. Is this happening to anyone else?
Sent from my Nexus 4 using xda app-developers app
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Me too I just switched from vzw iPhone 5 and I have T-Mobile now.... I cant even download my apps from the market and I have to get hot spot from my girls i5
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It obviously shouldn't be that way. Since this is wifi, try a mix of different networks. Lord knows, this wouldn't be the first phone with wifi issues with certain network security types right out of the gate (or wifi problems in general).
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Ajfink said:
It obviously shouldn't be that way. Since this is wifi, try a mix of different networks. Lord knows, this wouldn't be the first phone with wifi issues with certain network security types right out of the gate (or wifi problems in general).
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Click to expand...
Click to collapse
Yeah I switched to another network and it went fast again. Was just wondering if anyone knew the cause of the sudden slowdowns though.
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On T Mo, I have had it flip from H+ to 3G but all in all in my speed test without changing anything APN wise I consistently get around 16mbps down. You tube and such flies (HQ) and even on wifi on Xfinitys basic package on a G band router I have no issues at all with wifi and YouTube in HD. Sorry, I'm no help but I haven't had an issue.
Oh my bad, I forgot to mentioned that we were on the same WiFi.
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Yeah I have that problem on my WiFi as wells slow speeds. Have to switch to hspa to download apps, rediculous
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I've also had this on WIFI, thought it was my router, may have to play with router settings a bit to see what's happening.
Its only really noticeable when I try to play a youtube video, although had it other times too.
Also switching to mobile data for youtube as its faster!
phil001 said:
I've also had this on WIFI, thought it was my router, may have to play with router settings a bit to see what's happening.
Its only really noticeable when I try to play a youtube video, although had it other times too.
Update!!! I figured it out its googles servers they are overloaded this is what makes me think that. Play store loads slow as well as YouTube! Not our phones!
Also switching to mobile data for youtube as its faster!
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I think something is wrong with our WiFi radios. Might need an update. Its happening to a lot of us.
Sent from my Nexus 4 using Tapatalk 2
I'm seeing this issue as well and it's occurring on 2 completely different wireless networks: at home and in the office. I've tried tweaking wifi settings on both my Nexus 4 and on my router at home but nothing has fixed the slow wifi speeds. And none of my other Android devices are experiencing this issue (Nexus 7, Galaxy Nexus, Motorola Xoom).
I called Google Play support just now and they didn't have any info to offer on whether or not this is a known issue, they just asked if I'd tried restarting my phone and/or done a factory reset. After I verified that I'd already done both things and neither action resolved the issue they said I could exchange the phone, so that's what I decided to do.
If this problem is indeed being caused by faulty hardware in the phone, hopefully the replacement phone will be in a better state and work properly. <crosses fingers>
It's the router that needs to be updated, not the phones. Obviously if you're is broken though that is irrelevant.
Can't say why that is, but I read a thread awhile back detailing it, I will try and locate it.
http://forum.xda-developers.com/showpost.php?p=34260682&postcount=25
Seemonsters said:
It's the router that needs to be updated, not the phones. Obviously if you're is broken though that is irrelevant.
Can't say why that is, but I read a thread awhile back detailing it, I will try and locate it.
http://forum.xda-developers.com/showpost.php?p=34260682&postcount=25
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That makes no sense seeing as everything else works fine on my Wi-Fi
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i did the same thing. as it was mentioned, turned on and off "data" " data roaming" and "2g" after that Kaboom! went from 3-7mpbs to 12-15mpbs
remydlc said:
i did the same thing. as it was mentioned, turned on and off "data" " data roaming" and "2g" after that Kaboom! went from 3-7mpbs to 12-15mpbs
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Click to collapse
So you just unchecked and checked?
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remydlc said:
i did the same thing. as it was mentioned, turned on and off "data" " data roaming" and "2g" after that Kaboom! went from 3-7mpbs to 12-15mpbs
Click to expand...
Click to collapse
horr1blek1tten said:
So you just unchecked and checked?
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Click to collapse
I think remydlc is referring to download speed over a cellular data connection, and not WiFi (which is what this thread's topic is really about). At least that's the way I read it...
Is this related... I have noticed compared to my old S2 and iPad my nexus has fewer bars and the signal can drop if held in the left hand. The connection speed can be much less too.
Not good.
could it possibly be trying multiple networks? I have a dual band 5 and 2.4 but they have different ssids - my initial set up was to the 5 ghz but when the google restore happened it populated my 2.4 ssid and pw. I found I had to "forget" all my configured access points and just set up my 5 ghz one and everything was smoking
glenroebuck said:
could it possibly be trying multiple networks? I have a dual band 5 and 2.4 but they have different ssids - my initial set up was to the 5 ghz but when the google restore happened it populated my 2.4 ssid and pw. I found I had to "forget" all my configured access points and just set up my 5 ghz one and everything was smoking
Click to expand...
Click to collapse
I don't think this is causing the issue (at least for my phone). I've had the slow WiFi speeds on 2 completely different networks, with one being the campus network of the university I work at. Also, I've tried using my Nexus 4 on 2 different routers at home, one of which can do both 2.4/5.0 ghz and when I tried manually setting the phone to just use either the 2.4 ghz or the 5.0 ghz network it made no difference; the phone's WiFi speed was still very slow.
I'm feeling pretty convinced at this point that it's something faulty with the phone. I pretty much tore down and rebuilt my home network yesterday and tried all different types of settings to test the result on my Nexus 4 and nothing made the WiFi speed any better on the phone.

[Q] wifi & mobile network grey bars

I recently bought my wife a nexus 4 abs she's been having a problem where when she disconnects from wifi her mobile network won't connect, it says 4g but it's greyed out. I know she should still have connection but she doesn't, everything just times out. Only thing that fixed it was a reboot, anyone else experience this issue? And she's on stock rom, not rooted.
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No worries it'll reconnect to the servers.
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This only happens to me when my WiFi connection decides to disconnect! Both my Service and WiFi gray out when my WiFi does not work. I have a terrible at&t internet service! But other than that it works properly.
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Does it just never turn blue after turning off wifi? Its supposed to turn off mobile data when wifi is on to save battery. It could just be an issue with your carrier
Well like I said a reboot does fix it, from what I understand it's just when disconnecting from wifi. The time interval was about 10 minutes and her mobile data still wasn't connected. We're on tmobile btw. I thought it might just be an n4 issue, I don't experience that issue on my one.
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Slow Wi-Fi on MF3?

Here are my specs:
Phone
16gb galaxy s4
At&t
Not rooted
Touchwiz
Android 4.2
MF3 baseband
Router
Apple airport extreme
Auto channels
WPA password protected
I have seen some threads with the s4 running slow on dlink WiFi, but I have an airport extreme base station at home. My phone rings perfectly on 4g/LTE, but nothing seems to work on Wi-Fi. YouTube is slow as hell, play store takes forever to load. A few weeks ago, everything was working great over Wi-Fi too, so I wanted to ask if anyone else is currently having this issue?
My wife's iPod touch works fine on the same Wi-Fi, as well as a thinkpad and macbook air.
I've already tried disabling Wi-Fi power saving mode, but haven't touched any other settings. Any thoughts on what to do? I was thinking about taking it to best buy and switching out the phone, maybe a bad phone? (Not likely because it was working fine a few weeks ago)
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I've attached a picture of my speed test too
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Try adding your device to the DMZ. If that fails, get rid of the Apple junk. ;P
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I'm interested in any option that doesn't require me to buy another router. Like I said, wifi working fine for everything else. I appreciate your suggestion, but I'd love to hear other options or approaches.
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Aaaaaaand back to 1 mbps with "network errors"

4.3 keeps dropping internet connection?

Hi, I've had my nexus 4 for about a month now, when I got the phone I automatically updated to 4.3.
Since the very first day I've had it, it has kept dropping internet connection randomly multiple times everyday? The signal bars will go from blue to grey and stay like that until I either reboot the phone or turn on airplane mode then turn back off again.
Its becoming a constant hassle trying to use the internet because it keeps hanging.
Has anyone else come across this problem? If so what did you do to fix it?
Thanks alot
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Do you mean WiFi or carrier data? And how good is your carrier signal? You can try flashing a different baseband.
For WiFi, try turning off Wifi Optimization.
Its the carrier data that keeps dropping, I also get full bars most of the time.
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dazza_84 said:
Its the carrier data that keeps dropping, I also get full bars most of the time.
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Its surely a baseband problem..nothing to worry..
Just try different basebands and test them and see what works for you,but for that you need to be rooted..
Before you asking or creating a new thread refer to efrants thread for unlocking and rooting.:good:

Wifi issues do I need to switch while I still can

I just got the s4 and its total stock but it keeps dropping on and off wifi. In fact in settings it sometimes says I have poor wifi conection. But I know my router is good and my wifes g2 has no problems. I read online there is alot of issues sinve the 4.3 update and even after the patch. I also read samsung is not going to do anything there blaming sprint or your wifi. Should I switch to the g2 while I still can or hold out for a fix or does anyone know a fix?
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Also it took 4 hours to set up phone. Most was the crazy slow download of apps from play store and updates from play store. Small apps would take 10 minutes to download then about 5 to install while on my wifes g2 same app same time downloaded and installed in under a minute
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WiFi switching on and off is probably under wifi settings. Just turn it off and it will stop switching on and off.
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I tried that even did the ##code to get into WiFi and turn off WiFi saver. Nothing worked and then it started saying no mobile data connection but I was on lte and it worked. Plus I was getting that Knox problem so I just went to the g2. Thanks though
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