Samsung Galaxy S7 Won't Find Any WiFi Networks - Samsung Galaxy S7 Questions and Answers

So just last night at around 5AM my Galaxy S7 was working perfectly in terms of WiFi (don't ask why I was up at 5AM lol). But I fell asleep and I wake up at around 3PM and it won't find any networks at all. If I go into the WiFi settings and turn WiFi on, the page where it's supposed to list nearby WiFi connections is blank. All it says is "Scanning for WiFi networks..." but nothing pops up. This isn't my home connection because there are TONS of nearby WiFi connections, and I know because I've seen them on the list before, And my laptop is working fine so it's only my S7 that's acting weird. I restarted it multiple times to check it that was the problem but it didn't fix it. Can anyone help?

Is the S7 Stock? What ROM is it running? did you have auto updates enabled? have you wiped and reset it yet?

same problem here
kikimota said:
So just last night at around 5AM my Galaxy S7 was working perfectly in terms of WiFi (don't ask why I was up at 5AM lol). But I fell asleep and I wake up at around 3PM and it won't find any networks at all. If I go into the WiFi settings and turn WiFi on, the page where it's supposed to list nearby WiFi connections is blank. All it says is "Scanning for WiFi networks..." but nothing pops up. This isn't my home connection because there are TONS of nearby WiFi connections, and I know because I've seen them on the list before, And my laptop is working fine so it's only my S7 that's acting weird. I restarted it multiple times to check it that was the problem but it didn't fix it. Can anyone help?
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I have galaxy s7 edge. it won't find any networks at all. I need to fix this. I had a similar problem with my last LG G3. I removed the battery and boot the phone when ever I got this problem. But with the s7 edge the battery can't be removed. I need help with this.. anyone???

kikimota said:
So just last night at around 5AM my Galaxy S7 was working perfectly in terms of WiFi (don't ask why I was up at 5AM lol). But I fell asleep and I wake up at around 3PM and it won't find any networks at all. If I go into the WiFi settings and turn WiFi on, the page where it's supposed to list nearby WiFi connections is blank. All it says is "Scanning for WiFi networks..." but nothing pops up. This isn't my home connection because there are TONS of nearby WiFi connections, and I know because I've seen them on the list before, And my laptop is working fine so it's only my S7 that's acting weird. I restarted it multiple times to check it that was the problem but it didn't fix it. Can anyone help?
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Try booting into recovery and clear the caches, reboot and see if it works

*Detection* said:
Try booting into recovery and clear the caches, reboot and see if it works
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Click to collapse
I did, it still doesn't work. I contacted Samsung support and they said it may be a physical problem. I did drop my phone and it cracked the screen, but I don't really see how it could be that. But the problem did start a day after I dropped my phone, so maybe.

kikimota said:
I did, it still doesn't work. I contacted Samsung support and they said it may be a physical problem. I did drop my phone and it cracked the screen, but I don't really see how it could be that. But the problem did start a day after I dropped my phone, so maybe.
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Sounds very possible that dropping your phone from enough height to crack the screen could also damage internal hardware
Could be something as simple as a cable coming loose, but could also be physically damaged

I have the same problem, my wifi also cant find available networks, but when i try to connect it via WPS it connect and then it also show all available networks as well, but when the light goes or wifi disconnect due to some reason it once again cant find it and i have to connect it via WPS , also it cand find my office wifi

Related

Atrix 2 known wifi problems?

I have an Atrix 2. It has been replaced twice by AT&T due to this problem. I have factory reset each phone and tried every battery mode, data saver, sleep policy and wifi channel.
The problem:
The wifi turns off by itself! not sleep, off! As in the checked box is unchecked. The phone does it during use and when not being used. The timing between instances is random. The wifi sometimes stays on for hours. Other times it wont last five minutes. I have 4 other wifi devices connected by wifi to my secured router.
Note: I travel across the country for work and the problem occurs at airports, hotels, mcdonalds, ect.
I have called Motorola and their only option is to send it to the with no replacement. I could use some help. I have been searching online and others with this problem dont persist, they simply state that unsecuring their router fixed the problem. That is not an option for me as the routers are not mine.
Any input will be greatly appreciated.
Hi, I recently noticed this problem started after I installed the ATT Smart Wi-FI app. Mine will connect then turn off, wait a second turn back on then I get the WIFI networks avail message and I check it and it's not connecting to the network til I tell it too then it will stay connected all day.
I"ve had my atrix 2 for about a little over a month. It's doing the same thing. Wifi will randomly shut off. I have to go into the settings to turn it back on. It will work fine for a little while then just shuts off again. Does anyone know if this seems to be hardware or software related. I've tried different apps and WiFi sleep settings to no avail. I really like the atrix but this is kind of annoying.
I have the same issue also, except I have top reboot my phone for wifi to work again.
Sent from my MB865 using XDA App
i have the same problem, it's not my wifi connection, but the actual wifi setting turns off whenever i turn off my screen and yes, i've set the wifi sleep policy to "never", so that's not the problem. i've also tried "never when plugged in" and "when screen turns off" and i still get the same problem. i was thinking about going to at&t and asking them about it but decided to come here first.
(a white iphone 4 is looking better and better ) can anyone help?
I had this problem but after I disabled the power saver option under battery and data (set it back to performance) it went away and Wi-Fi works perfect.
Tried different battery saver settings as well, nothing changed.
Sent from my MB865 using XDA App

[Q] Wifi issue ! (Lollipop 5.1)

Hi All,
I got the Lollipop 5.1 OTA 2 days ago and installed it - everything went smooth and the phone working fine...
But I noticed that if I reboot my router (or turn it off / on again) the Wifi don't reconnect unless I turn on the screen (the second I turn on the screen the wifi connect normally).
I didn't have this issue with Lollipop 5.0.1
P.S.
I know that this is happening because I have a led on my router telling me if any of my Wifi devices is connected or not. And to make sure I also entered the router settings to see if my phone is connected or not.
Anyone noticed that issue with the new lollipop 5.1 ?
Cheers,
I think that your problem is not switching off the router. The problem is when your phone goes to suspension (screen off) and then it drops the wifi off.
My Nexus 5 with 5.1 is doing the same
skorzo said:
I think that your problem is not switching off the router. The problem is when your phone goes to suspension (screen off) and then it drops the wifi off.
My Nexus 5 with 5.1 is doing the same
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Click to collapse
I've got some similar behaviour here, both when updated from 5.0, and with a fresh install from the factory images. When I arrive at a place with known WiFi, the phone only connects once I turned on the screen. After that, it stays connected until I move out of range and back again.
It's probably a matter of responsiveness/battery life. The more it polls for networks, the more battery it uses. It should connect, even with the screen off, within a few minutes.
That being said, I have my wifi set to always stay connected, and I've seen it not connected when I turned the screen on, then connect a couple seconds later. So, there's that. Curious how often it does that.
Aerowinder said:
It's probably a matter of responsiveness/battery life. The more it polls for networks, the more battery it uses. It should connect, even with the screen off, within a few minutes.
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That's what I suspected. Sometimes, the waiting game works, but I've had my N5 lying on my desk – where it usually gets full WiFi bars – for about 40 minutes the other day, still it did not connect until I turned the screen on.
Edit: Just now, my phone disconnected from WiFi when the screen turned off, which leads me to believe that this is all caused by the WiFi sleep policy. Could it be that Google messed up something there?
dadrc said:
That's what I suspected. Sometimes, the waiting game works, but I've had my N5 lying on my desk – where it usually gets full WiFi bars – for about 40 minutes the other day, still it did not connect until I turned the screen on.
Edit: Just now, my phone disconnected from WiFi when the screen turned off, which leads me to believe that this is all caused by the WiFi sleep policy. Could it be that Google messed up something there?
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My "research" has led me to believe this is the case.
Anything in terms of a workaround?
I came across those settings in the developer options (see screenshot), especially the "Always allow WiFi Roam Scans" looked promising. Been playing with them, but so far no luck.
Hi All,
exactly the same issues as yours guys are happening since I received the OTA 5.1 and installed it !
I Guess something messed up with this new update in regard of the wifi... as you mentioned.
If you come across a workaround or a confirmation from "Google" please share.
Cheers,
(With almost everyone nowadays having data ..it is difficult to notice such a behavior due to the fast wifi/data switching)
I have seen this happen as well. My battery graph will even show a missing area for WiFi indicating it turned itself on and off twice within a few hours and then stayed on after that.
Google just now released LMY47I, has anyone had a chance to see if that version fixes our problem? Once I'm off work (in about 8 hours), I'll give it a whirl and report back.
Tasker will help you
OsBuilder said:
Tasker will help you
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Click to collapse
Could you please elaborate on that? I'm familiar with Tasker, but I can't think of a way of dealing with this, since I'm not sure what actually happens with the WiFi. The settings appear untouched.
dadrc said:
Could you please elaborate on that? I'm familiar with Tasker, but I can't think of a way of dealing with this, since I'm not sure what actually happens with the WiFi. The settings appear untouched.
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I'm sorry, but my phone is now in the service center , and press that I do not remember specifically . The idea is that when you disable wifi, a time interval is forced to connect to a particular network . Look presence on the internet , here is full of instructions.
dadrc said:
Google just now released LMY47I, has anyone had a chance to see if that version fixes our problem? Once I'm off work (in about 8 hours), I'll give it a whirl and report back.
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Click to collapse
http://www.androidpolice.com/android_aosp_changelogs/android-5.1.0_r1-to-android-5.1.0_r3-AOSP-changelog.html
Almost all of the changes on these different builds are SIM related for specific carriers.
LMY47I was only released to LGD821 devices with SIM cards from Indian and Australian carriers
Same problem here. I am slowly losing faith in Google. Get the frickin basics going guys!!!
Back to my 5.0.1 build.
I've gone back to 5.0.1, too. Pity, except for this I was pretty happy with 5.1. Maybe 5.1.1 will actually be usable.
Do you think it can be related to Issue 163350? code.google.com/p/android/issues/detail?id=163350
I have just reported that, but I'm still trying to understand if it just happens to me or what.
fabiastik said:
Do you think it can be related to Issue 163350? code.google.com/p/android/issues/detail?id=163350
I have just reported that, but I'm still trying to understand if it just happens to me or what.
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I think the solution is "use vibrate mode on". Get your device to vibrate mod and test it.
I am waiting for your feedback.
MindLeader said:
I think the solution is "use vibrate mode on". Get your device to vibrate mod and test it.
I am waiting for your feedback.
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This trick didn't work.
I have this proble too

Nexus 5 WiFi Crashing Phone

Hi all. I have a weird issue that after Googling it doesn't seem anyone else has had.
The issue started earlier today, in the morning. I was using my phone on the WiFi and it was working phone, then my phone crashed, restarted itself.
I noticed it wasn't connected to the WiFi, went to the WiFi settings and where it usually says the list of networks it said "Turning on WiFi" and the slider at the top was greyed out so I couldn't turn it off.
I tried airplane mode and that didn't help. But the phone was working fine on my mobile data so restarted.
Now the weirder part starts. I basically have an issue where, if I turn on the WiFi, my phone crashes, or doesn't act like it's turning the WiFi on.
Even going Settings and then pressing on the WiFi option freezes the phone.
The problem started when I was still using 4.4.4 however since the problem developed I've used my mobile data to download the updates and now have 5.1.1 I think.
The problem persists even after updating to the most recent version and doing a factory restore. The phone is currently completely stock with nothing downloaded on to it. All I did is go through the first time setup for the device.
The WiFi currently is off, and the phone is working however it won't connect to my data, it has the signal bars and then an ! instead of a 4G icon.
If I try to turn the WiFi on it crashes the phone.
The phone is still under warranty so I plan on contacting LG on Monday however it's currently 3:34 AM on a Sunday so I have a day until I can call them and was hoping for a solution in that time.
Thanks in advance. I have the phone to hand so anything you want me to test I'm able to.
There is some information I didn't type as I don't know what is important was trying to avoid a wall of text so if you have any more questions I'll answer I best I can.
Thanks for reading, I hope you can help!

Galaxy S7 T-Mobile (Android 7.0) WiFi disconnects as soon as screen is off

Hey there, I have this S7 that would just disconnect from WiFi as soon as the screen goes off. When I try to make VoIP calls as soon as I put the phone to my ear and the screen goes out, the WiFi drops. I also confirmed this by running a continuous ping, soon as screen is off, WiFi drops.
Now this only happens at work. At home all is fine and dandy. At work we have open WiFi APs with guest logon pages. Being on the IT team I did create an SSID that was WPA2 locked to test this, but the problem still persists. I tried 5 GHz and 2.4 GHz, Ijumped through every possible solution I could find in the internet, but nothing seems to work! My old Xiaomi worked just fine, what is it with the Samsungs? anyone got an idea?
I don't think that will solve your problem but as nobody replied you, maybe you could try to see in your Galaxy S7, in parameters, then Connections, then Wifi, then at the top right corner, clic on "advanced", and there you have some parameters for the wifi like the one to put Wifi Off when phone is asleep.
Also, check if you have installed any battery saver app that would interact with your Wifi and turn it off while phone is asleep, or something like a Greenify app that would put asleep the wifi service (if there is one).
In the end, if your problem is only at work and not at home, then I would say the problem comes from your router at work. Something in the settings maybe disconnects devices when they're under certain percentage of use or something like that.
I hope that will help you, or at least help you find other things to look for to identify your problem ; )

Wifi on but not connected most of the time?

So i know this is a widespread problem because im on my 3rd pixel 3 and i have exactly the same problem on every one.
When im at home wifi is on but half the time it isnt connected, but as soon as i poke about on the wifi settings it connects. Its like its in some kind of sleep mode or something. I end up using all my mobile data whilst indoors a few meters away from the router! Ive had a pixel 3 since it came out and just cant seem to fix this problem.
Please tell me its a well known problem and some one has worked out a fix
I have not had that problem, but you may be able to reduce the mobile data usage by turning off "Switch to mobile data automatically" in Settings, Wi-Fi preferences.
gords78 said:
So i know this is a widespread problem because im on my 3rd pixel 3 and i have exactly the same problem on every one.
When im at home wifi is on but half the time it isnt connected, but as soon as i poke about on the wifi settings it connects. Its like its in some kind of sleep mode or something. I end up using all my mobile data whilst indoors a few meters away from the router! Ive had a pixel 3 since it came out and just cant seem to fix this problem.
Please tell me its a well known problem and some one has worked out a fix
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Click to collapse
This is no a known issue and if you're on your 3rd pixel i don't think had anything to do with the phone. It's most likely an issue on your router side. Have you tried resetting it?
Are you by chance using WiFi which is configured as hidden network? This is typically done by checking the checkbook next to "do not broadcast SSID" checkbox.
If you are connecting to such network, there is a setting you have to check while setting up that WiFi connection. It is hidden in normal dialog and so it is easy to miss. This was the root cause for similar issue I have seen on my Android devices including Pixel.
Im not using a hidden network. The weirdest thing is whenever i notice its not using wifi as soon as i pull down on the screen at the top it will connect. like its been caught out lmao. was using the phone just now, an alert comes up to tell me ive used 2gb of data. so i pull down on top of screen and theres an x on the wifi icon, its on but theres an x (probably means not connected to anything) then a second later it connects. i dont click on anything it just connects whenever i pull the top bar down to check. its been happily eating my data while on sat in doors but as soon as i check that status it connects! its damn crazy!
This is exactly what it does every time without fail whenever i notice there is no wifi.
Fix your router bro
gords78 said:
Im not using a hidden network. The weirdest thing is whenever i notice its not using wifi as soon as i pull down on the screen at the top it will connect. like its been caught out lmao. was using the phone just now, an alert comes up to tell me ive used 2gb of data. so i pull down on top of screen and theres an x on the wifi icon, its on but theres an x (probably means not connected to anything) then a second later it connects. i dont click on anything it just connects whenever i pull the top bar down to check. its been happily eating my data while on sat in doors but as soon as i check that status it connects! its damn crazy!
This is exactly what it does every time without fail whenever i notice there is no wifi.
Click to expand...
Click to collapse
The x on the wifi icon means you are connected to the router, but the router is not connected to the internet. Like everyone else, I think you have a router problem. Rebooting the router may help, but it may be time to replace the router.
Where are you located? It could be that your internet is unable to ping google servers. I have that issue whenever I clean flash, but I am in China so that is why.
This is not a widespread issue and as almost everyone has said, you have a router issue. It's possible that your router "sleeps" when nothing is trying to use it but that's just a guess. My suggestion, get a new router.

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