Samsung S4 I9505 Can't see any wifi networks - Galaxy S 4 Q&A, Help & Troubleshooting

I have a Samung Galaxy S4, GT-I9505, Android Version 7.1.2, using LineageOS 14.1-20180309-NIGHTLY-jfltexx. Baseband version: I9505XXSPQA1. Kernel version 3.4.112-Lineage-ge8d93e0
It has worked fine for months. But on the 1st of July, while a friend was borrowing it, it was all of a sudden unable to see any wifi networks. My friend doesn't know what he did to it as he was just trying to connect his wifi. Now I can't find ANY wifi networks. None at all! All other devices in the house can find and connect to wifi networks and to the home wifi network.
I've tried the following:
1) Restarting the phone
2) Turning on airplane mode and looking for wifi networks.
3) Restarting the router
4) Factory resetting the phone
5) Flashing the same Lineage OS version from the SD card using TWRP.
6) Removing the battery for 1 minute and putting it back in and restarting the phone.
What happens normally?
I go into wifi settings by pressing and holding down on the wifi icon in the notification tray. When I get there, there is a blue moving bar near the top which makes it seem as if it is searching for a network. I still attempt to turn on the wifi using the switch to the top right. There's a message in the middle of the screen saying "Turning Wi-Fi on …" And then it searches and searches. Eventually the "on" and the wifi switch get greyed out and are unresponsive to any touch, but there is a moving blue bar just under it that makes it seem as if it is still searching, but it sees none. If I wait long enough and the phone screen times out and I turn it back on, in wifi settings, at the top it says "off" but the blue bar under it is still moving as if it is searching. If I press the switch, the same thing happens.
If I got into "Configure Wifi" the MAC address is set to 02:00:00:00:00:00 and the IP address is "Unavailable".
Doing all this gives me the impression that it is a hardware issue, not a software one.
But I'm wondering if there are any solutions that I haven't tried, or is there agreement that it is most likely a hardware issue.
My wife took it to a local market to see if they could fix it. The guy went to the TWRP app that was installed and claimed that somehow it had been used to delete the wifi software. It didn't seem right or likely. I don't think he knew what he was talking about.
Can anyone help at all please?

get a new phone lol serranoltexx is old

@amenyahu
Hello, If you have any FULL Backup include EFS, preload etc. Restore. If you don't have backup, you can try flash STOCK ROM using for ex. samfirm - https://forum.xda-developers.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647
Also you can use one of thread https://forums.oneplus.com/threads/...-02-00-00-00-00-00-after-3-5-5-update.480733/
Let me know if there is any progress.

Related

ELFIN wifi broken but working. Can't find help.

I have an elfin now for almost 2 years. My problem started about a week ago. I tried to turn on wifi to surf the web but wifi just won't play. If I open up comm manager and press on wifi icon, the rotating busy icon comes up and in a few seconds, goes away and wifi icon stays white. If I try turning wifi on from the settings menu nothing happen either. After doing a hard reset, all is fine again and working.
I want to fix the problem without losing all my programs and save myself the hassle of reinstalling everything but nothing I try works.
If anybody has any suggestions, I would appreciate it very much. My phone is still under warranty so flashing is out of the question too.
Something I have noticed is that under the connections tab under settings, the wifi icon is not listed the same but has a new name of Network Cards. All network cards are still listed there.
help me !
I am in the same trouble. After up rom version "a touch of HD", my fone isn't able to use wifi anymore. I failed to make it recover again !

[Q] WIFI not working anymore.

Hi guys.
first my wifi became unreliable, it disconnected, didn´t reconnect sometimes etc...
now, it´s not working anymore at all.
when i go to wi-fi settings it says turning on, then the red arrow appears, then immediately it says turning off. down there comes a message "unable to scan for networks"
i searched the whole forum, but didn´t find a simlar problem.
i reseted it to factory, didn´t help.
it can´t be a router problem, ´cause all the other devices on the wifi work, even my friends myt4G.
any tricks or ideas anyone?
i got this form a friend in the states, bought last december, he ment, in the US they have mostly only 90 days warranty, in germany we got 2 years.. is this true..?
stock rom. 2.3
Try chaning the channel on your Wifi Router. Most of the new routers you can go to routerlogin.net from a computer that is connected to the router and change the settings. I had the same problem and it appeared all of my neighbors were using the same channels i was. I move to a different one and haven't had a problem since. It will not affect the SSID or the password So all of your login it stuff will stay the same. Any WAN connected device just might lose signal for a second or two while the router changes channels.
thx. channel was on auto. changed it to 11 out of 13. didn´t help. also, i have only 3 wifis in my neighbourhood, i can get with my pc. on the htc, it shows only mine + the direct neighbour..
it seems that wasn´t he prob here...
could it be a hardwareprob? anyone any knowhow on american warranty?
the wi-fi button is almost not responding anymore.. when i turn it off, it turns itself on again, when i go into wifi settings, ist keeps truning on and off again in an endless loop....
edit: tethering does also not work anymore. when i click on portable wif hotspot, it says error...
hardwarefailure?
i found these guys who have the same problems.
http://community.htc.com/na/htc-forums/android/f/101/p/11557/49097.aspx#49097
seems to be a gingerbreadissue... perhaps i´ll try downgrading first.
so i downgraded to 2.2.1 and it worked. got to bed, woke up, not working anymore "unable to scan for networks" again

[Q] Nexus 4 with AOKP won't connect to Wifi, "WPS failed" error

My Nexus 4 isn't connecting to wifi. More specifically, if I am connected to a remembered network, my phone does not automatically reconnect when I leave the range then come back into it.
Now, there are 2 wifi networks in the apartment and I've tried both. I actually just "forgot network" on the last remembered network on my phone because I was trying to connect to the better one.
Since I've done that, I am unable to connect to wifi at all, because the only way for me to connect to wifi before was to restart my phone and have it automatically connect to the remembered network.
Now that I don't have a remembered network, I cannot connect to anything, and my Wifi page on my phone will not show any wifi networks available and it won't even give the option to turn on wifi or to refresh the list. I have to reboot my phone, making sure the wifi is off first (using the toggle on the dropdown notification menu), then I can at least refresh the empty list. When I refresh the list, it gives me an error, "WPA failed. Retry in a few minutes."
I need this fixed. I live in a basement apartment and my cell signal is usually unavailable while I'm home.
I was running the AOKP 4.3 milestone when I started having the problem, then went back to stock, put on a 4.4 nightly ROM, had the same problem, then went back to the same 4.3 milestone. Unfortunately, I didn't leave my phone on stock 4.4 long enough to see if the problem persisted there.
Is there anything I can do at this point before going through the process of bringing my phone back to stock again?
Thanks
Update: After restarting my phone some 20 or more times, I was eventually able to see the list of networks and put the password in for the new network. So I at least have wifi now because my phone automatically connects.
However, all the problems stated above are still the same. I lose connection and cannot automatically reconnect when I go out and back into range of the signal, and can only regain the connection when I restart my phone and it automatically connects to the one known network on reboot.
If there's any information or anyway to try to fix it, I'd love to know.
Thanks

S5 Keeps Disconnecting WIFI

Hey there,
Got an S5 i bought in april and so far loving it but just recently about a day or 2 ago my phone keeps disconnecting and connecting when im at home on my WIFI which never happened before, has anyone had this issue before?
appreciate the help people
Godmyster said:
Hey there,
Got an S5 i bought in april and so far loving it but just recently about a day or 2 ago my phone keeps disconnecting and connecting when im at home on my WIFI which never happened before, has anyone had this issue before?
appreciate the help people
Click to expand...
Click to collapse
I do not have the issue, but maybe you can try this.
1. Open phone dialer (Phone App)
2. Dial *#0011#
3. The ServiceMode screen will be open. When it is open. Tap on menu button on top right.
4. Select "WiFi"
5. Find "WiFi Power Save Mode"
6. Press the "ON" button to turn the "WiFi Power Save Mode" off. (It will show as "OFF" if it is off)
7. Your WiFi will be off and on again.
8. Try to reconnect to the Wifi.
This didnt work still the same
Godmyster said:
This didnt work still the same
Click to expand...
Click to collapse
You haven't got smart network switch turned on? (under WiFI settings) it'll do that if it thinks you WiFI connection isn't stable.
Godmyster said:
This didnt work still the same
Click to expand...
Click to collapse
Set Google public DNS in your router
Ok i just found out its only doing it at home, i tried wifi and my work and it works perfectly doesnt disconnect and connect, but at home it does, though it never did it before and i didnt change or do anything to my router or my phone which i find very strange.
thanks for the help guys i appreciate it a lot, does anyone know what i can do?
have you found a fix to this yet? I'm having the same issue and getting ready to just return the phone and buy something else. My home network is fine, the other tablets, phones, laptops are having 0 issues, Yet my GS5 is either dropping or something, it seems to run horrible slow and things just time out.
Godmyster said:
does anyone know what i can do?
Click to expand...
Click to collapse
No, and the reason that we don't know is that you didn't provide any useful details about your situation.
If you think that someone can do more than make a random guess implies that you think that there are only one or two possible causes. But most issues, including this one, have hundreds of possible causes. So random guesses are not terribly useful. Nor are we psychic, so the only way to efficiently narrow it down is to look for anomolies in your configuration. Which you haven't described.
You should be providing as much technical detail as possible, e.g. what is your home router model & it's firmware version and configuration details, phone firmware version, any specific error messages, any observed pattern, a logcat if you can and anything else that seems relevant.
Godmyster said:
Hey there,
Got an S5 i bought in april and so far loving it but just recently about a day or 2 ago my phone keeps disconnecting and connecting when im at home on my WIFI which never happened before, has anyone had this issue before?
appreciate the help people
Click to expand...
Click to collapse
Have you tried changing the channel on your router?
Sent from my Nexus 7 using Tapatalk
Change the router channel
Change the router SSID
Default the router comfiguration
Change the router operating mode
Update the router firmware
Move the router to a different location
Use a different router
Unplug your neighbours new 50,000 watt pirate radio station
Update your phone firmware
Buy a different phone
Sacrifice a piece of triple chocolate gnocche cake to the pagan God of chocolate and wifi
All random guesses with roughly equivalent (and small) chances of success.
Or one could try troubleshooting the issue methodically.
.
Solution
Godmyster said:
Hey there,
Got an S5 i bought in april and so far loving it but just recently about a day or 2 ago my phone keeps disconnecting and connecting when im at home on my WIFI which never happened before, has anyone had this issue before?
appreciate the help people
Click to expand...
Click to collapse
Hey guys,
I had this problem before, This is an issue with your samsung device and your ISP. They aren't compatible with each other.
Solution:
You must just block clients3.google.com in your modem/router. You can use Block Web Sites section in your modem/router.
Every thing has a solution.
Enjoy your device WIFI.
IranDev said:
Hey guys,
I had this problem before, This is an issue with your samsung device and your ISP. They aren't compatible with each other.
Solution:
You must just block clients3.google.com in your modem/router. You can use Block Web Sites section in your modem/router.
Every thing has a solution.
Enjoy your device WIFI.
Click to expand...
Click to collapse
I have teh same issue on my S5 Cricket. The WIFI does NOT disconnect. Its connected however I don't have internet connection. Turning the WIFI on and OFF fixes the issue, for a short while until it happens again in an hour. Sometimes I slick on a link and wait and wait just to find out the darn WIFI is not connected to the internet. (probably not even connected to my router properly eg, I cant see my laptop shared drives for example).
This has something to do with saving battery or somthing. WIFI internals shut down, even though the icon on top of the screen still shows I'm connected.
Smart Network Switch
Godmyster said:
Hey there,
Got an S5 i bought in april and so far loving it but just recently about a day or 2 ago my phone keeps disconnecting and connecting when im at home on my WIFI which never happened before, has anyone had this issue before?
appreciate the help people
Click to expand...
Click to collapse
Your phone thinks that your WiFi is unstable and dumps the connection to go back to 4g. Why exactly, who knows, but it's easy to turn off the "smart" network switch. Simply hold down the WiFi icon for 2 seconds to get into the connections section. Right there at the top is the smart network switch section ... just uncheck the selection box. Easy.
Lastly, people like fffft need to get over themselves. The fix for the original poster's question was easy, but since fffft didn't know it, he decided to instead attack in order to make himself feel superior. How sad and pathetic does someone have to be to troll forums looking for opportunities to attack and belittle someone else?
minin0la said:
I do not have the issue, but maybe you can try this.
1. Open phone dialer (Phone App)
2. Dial *#0011#
3. The ServiceMode screen will be open. When it is open. Tap on menu button on top right.
4. Select "WiFi"
5. Find "WiFi Power Save Mode"
6. Press the "ON" button to turn the "WiFi Power Save Mode" off. (It will show as "OFF" if it is off)
7. Your WiFi will be off and on again.
8. Try to reconnect to the Wifi.
Click to expand...
Click to collapse
The issue is resolved simply by going to the advanced settings in Wifi and disabling 'Always allow scanning'.
Hope this helps.
same issue with my s5
Airax said:
You haven't got smart network switch turned on? (under WiFI settings) it'll do that if it thinks you WiFI connection isn't stable.
Click to expand...
Click to collapse
I had the same issue. I just tried the suggestion, turning of smart network switch in the wifi-advanced menu. Seems to be working so far!
Thanks!
Well I know that Smart Network is turning off wifi.. problem is that i have a fiber at home!! So what kind of problem smart network finds on my broadband?? ?
solution to wifi disconnect problem
I was looking for an answer to a different wi-fi question when I saw this.
I'm on AT&T with my S5.
Under the Wi-Fi settings I have an option for "Smart Network Switch" which says it Automatically switches between Wi-Fi and mobile networks to maintain a stable internet connection. Anytime a computer says it automatically does something for me; I typically say no thanks. I don't typically like my devices making assumptions of what I like, don't like or want to do. So I have that option unchecked. I never have an issue with the network stability once I've connected to a specific wi-fi connection.
Not sure if that will help you all or not. But thought I'd share.
so under Settings --> Quick Settings --> Wi-Fi you will find a check box option named "Smart network switch", untick it, this should take care of the problem.
leon.
Same problem
Hi, I have the same problem. Here some info:
- Device: Samsung Galaxy S5 (SM-G900F), Stock, not rooted
- Android version: 5.0
- Kernel version: 3.4.0-5640614 (2015-09-01)
- 'Smart network switch' is turned off
- 'Always allow scanning' is disabled
The problem started 2-3 days ago. When I turn on WiFi/WLAN the phone constantly turns it back off and on again. Didn't happen before, didn't change anything on the router (I have no access to it ) and didn't install a new app (as far as I can remember). I don't know if it only happens on this access point.
I made a log file (adb logcat) but am not sure if it contains sensitive information, is it save to share online?
The logcat doesn't contain any sensitive passwords.
816-8055 said:
Hi, I have the same problem. Here some info:
- Device: Samsung Galaxy S5 (SM-G900F), Stock, not rooted
- Android version: 5.0
- Kernel version: 3.4.0-5640614 (2015-09-01)
- 'Smart network switch' is turned off
- 'Always allow scanning' is disabled
The problem started 2-3 days ago. When I turn on WiFi/WLAN the phone constantly turns it back off and on again. Didn't happen before, didn't change anything on the router (I have no access to it ) and didn't install a new app (as far as I can remember). I don't know if it only happens on this access point.
I made a log file (adb logcat) but am not sure if it contains sensitive information, is it save to share online?
Click to expand...
Click to collapse
I'm have the exact same problem.
Samsung Galaxy S5 (SM-G900T)
CyanogenMod (13.0-20151203)
Android 6.0 (Marshmallow)
Baseband (G900TUVU1ANE6)
Smart network switch: disabled
Always allow scanning: disabled
What's happening is as soon as my Wi-Fi finishes authenticating and connects, it is immediately disconnected and tries again. No other devices in my house are having any issues, so that eliminates the router. When I factory reset my phone the Wi-Fi begins to work again, so that eliminates my phones hardware. The confusing part is that I installed a bunch of apps such as AdGuard that could possibly cause an issue but everything worked and this started out of nowhere. Also, I factory reset my phone AGAIN and AGAIN, everything worked and out of nowhere while I was looking at my screen while idling, I watched as the Wi-Fi connection dropped and began the disconnect/reconnect loop...
I'm assuming it has to be a software issue because it only started when I updated to a newer Cyanogen. I'm about to test if other Wi-Fi networks have this problem and I'm also going to look through and post a log.
If anyone has any questions or suggestions that may lead to a fix, PLEASE help!
Thanks
Well I factory reset again, this time wiping the internal storage and everything is now fine. I did look at my logcat and there were Wi-Fi errors but I forgot to post them...

Is my wifi chip (hardware) broken? (Lenovo A7600-F)

Hey,
I recently got a used Lenovo A7600-F tablet from my office because they weren't using it anyways.
Everything seems to work perfectly fine - except the wifi connection.
Code:
Model: Lenovo A7600-F
Android: 4.4.2 (no further update available for that model)
Kernel: 3.4.67
Build: A7600F_A442_000_029_150401_ROW
Here is the thing:
I disable/enable wifi
I click my home network and enter the password
Nothing happens for ~2 seconds
"Failed to connect to network" (no "connecting" or similar)
To make sure my WPA2 security isn't the problem, I made an unprotected hotspot on my phone. Absolutely identical problem.
One thing I noticed: The tablet is able to find all the networks around me and updates their signal strength in the list without any problems. As soon as I try to connect to one, it takes around 2 seconds until it says "Failed to connect to network". If I then try again, the message pops up instantly with no delay for all networks. From that moment on, the list also stops updating and can't be refreshed until I turn my wifi off and on again.
I downloaded "Wifi Analyzer" and I can see all the networks' strength values moving. I can close the app, do something else or go to standby and come back to see the values still updating. But as soon as I try to connect to a network, it will give that error again, stop updating the list in the wifi section and Wifi Analyzer will not be able to find any more signals. If I close that app and bring it back up now, the list of networks will remain empty. Same with the networklist on the wifi settings. Turning wifi off and on again resets the whole thing.
In short: My tablet sees all networks around me and updates them, but gives an error ("Failed to connect to network") as soon as I try to connect. Then no more wifi updates until i disable/enable it again.
Factory reset did not help, I let the battery drain and charged it back up - no success! I also tried an app called "Wifi Ruler", which was mentioned to fix a similar problem in a post I found on another forum. Connecting through that has exactly the same effect.
Does anybody have an idea about what is going wrong and what else I could try to fix this?

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