WiFi not working. - General Questions and Answers

Hey guys !
I have a Samsung Galaxy S2 But the WiFi is not working.
It worked fine till yesterday but stopped working all of a sudden.
At first i thought it was a software Problem ( : I was running a CM12.1 based Custom Rom) so i reverted back to stock ROM but still not Fixed.
The WiFi does not Turn on.
The icon stays there for a few seconds but does not turn on.
Any help Would be appreciated.
Note: Previously it showed WiFi Mac Address & IP Address Not Available.After reverting to stock ROM it shows Mac Address but no IP Address.
P.S: XDA is not allowing outside links here if you want to see what happens PM me I'll send you the screen shots

Have you tried full wipe?

cix1 said:
Have you tried full wipe?
Click to expand...
Click to collapse
Yes I have tried full wipe as well as rebooted the phone a few times but to no avail !

Try an app called dom diagnostics toll to verify your WiFi adapter is working and the model is correct
Also try phone tester

Bigbossyousef said:
Try an app called dom diagnostics toll to verify your WiFi adapter is working and the model is correct
Also try phone tester
Click to expand...
Click to collapse
It doesnt show any change in the Doms Diagnostic App. It is unable to turn on the WiFi maybe a Hardware problem.
Thanks For Your help though

The first action you should flash the phone.
You must test your software.
If the software is sure that there is no problem
Then the problem is hardware.

Related

I can`t enable internet in MIUI

After installing MIUI I can`t enable data transfer (2g/3g internet). Data transfer is turning on, but there is no 2g/3g logo and internet. This happens after installing all MIUI stock and custom roms. APN settings is correct, before it was ok. I`m installing via Clockwork recovery v5. Device is G2x (P999)
What should I do? How to enable it?
I believe for the g2x you should see an H next to the bars, that is if you are in a good service area.
Otherwise I think it also shows G, and E.
If it doesn't have anything at all, then I'm not sure.
Does the internet work when you go inti the browser?
Sent from my LG-P999 using xda premium
I'm having the same issue....
im using rg2x right now and the only way to fix it is with a hard reboot every time i turn my phone back on
try reflashing the faux kernel it worked for me to fix a problem i had not being able to turn my wifi on it should work for you too
what i have a problem is the backupp app does nto work for me im runing rg2x miui by richie
Yah I have the same problem, I notice it works but when you use WiFi then your done w/ the wifi and shut it off the regular cell data never comes back on - You have to completely reboot the phone...I'm using SINGH-UI - same thing
iCraft said:
I believe for the g2x you should see an H next to the bars, that is if you are in a good service area.
Otherwise I think it also shows G, and E.
If it doesn't have anything at all, then I'm not sure.
Does the internet work when you go inti the browser?
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
No...internet not working when I opening the browser. And EDGE/3G icons also not appear. ((
demarcus99 said:
im using rg2x right now and the only way to fix it is with a hard reboot every time i turn my phone back on
Click to expand...
Click to collapse
Hard reboot? How to do it? Is data working after hard reboot?
Cabronbr said:
try reflashing the faux kernel it worked for me to fix a problem i had not being able to turn my wifi on it should work for you too
what i have a problem is the backupp app does nto work for me im runing rg2x miui by richie
Click to expand...
Click to collapse
Please give me a link to that rom (Richie). How to reflash faux kernel?? I should do it after installing MIUI? Or you mean MIUI Rom with faux kernel? I`ve tried lots of MIUI roms (( Same problem anyway (
jele said:
Yah I have the same problem, I notice it works but when you use WiFi then your done w/ the wifi and shut it off the regular cell data never comes back on - You have to completely reboot the phone...I'm using SINGH-UI - same thing
Click to expand...
Click to collapse
I`ve tried SINGH UI too, as I remember wi-fi is on by defalut, isn`t it? So, I turned it off, and use my phone few days. Rebooted it few times, but data not worked ((
I had this problem before, go to ur APNs and go to authentication and make the authentication "None" instead of "Not set". That will enable ur data
naeem03 said:
I had this problem before, go to ur APNs and go to authentication and make the authentication "None" instead of "Not set". That will enable ur data
Click to expand...
Click to collapse
Thank you! I`ll try =) Tell me please which MIUI rom you tested with? Give me a link to that MIUI buld if it`s possible. Thank you! =)
Solution it works for me
ravshani said:
After installing MIUI I can`t enable data transfer (2g/3g internet). Data transfer is turning on, but there is no 2g/3g logo and internet. This happens after installing all MIUI stock and custom roms. APN settings is correct, before it was ok. I`m installing via Clockwork recovery v5. Device is G2x (P999)
What should I do? How to enable it?
Click to expand...
Click to collapse
Hey go to SETTINGS->MOBILE NETWORKS->ACCESS POINT NAMES-> in here select option button in your android phone, in the menu select NEW APN, you will get the APN settings as seen in this. In the link ACCESS NUMBER = SERVER in mobile.
As I am not allowed to post link for first ten TIMES! will guide you through
google search -> "vodafone apn address" the third result will be GPRS APN Settings with Username and Password - Modem Unlock. Click it and follow the method above mentioned.
Question was asked and answered.
Thread closed

[Q] how to fix Samsung galaxy note 10.1 bluetooth activation proplem

Peace be unto you all. I tried activating or turning on the bluetooth on my note 10.1 but up to now, it still can't come on.
any time I try to activate it, it acts as if it is about to be activated but it always go back to the deactivated mode.
I even reset the system but still no luck.
I also updated the os to jelly bean but still no luck.
the device is a wifi plus 3G model
GT-N8000
I will be very happy if anyone give me an advice on how to fix this issue.
Thanks in advance.
moussa202 said:
Peace be unto you all. I tried activating or turning on the bluetooth on my note 10.1 but up to now, it still can't come on.
any time I try to activate it, it acts as if it is about to be activated but it always go back to the deactivated mode.
I even reset the system but still no luck.
I also updated the os to jelly bean but still no luck.
the device is a wifi plus 3G model
GT-N8000
I will be very happy if anyone give me an advice on how to fix this issue.
Thanks in advance.
Click to expand...
Click to collapse
Dont know what you mean by activate. Mine you just turn on bluetooth it scans for devices and its done.
shaun298 said:
Dont know what you mean by activate. Mine you just turn on bluetooth it scans for devices and its done.
Click to expand...
Click to collapse
what I meant was that the blutooth can not even come on.
moussa202 said:
what I meant was that the blutooth can not even come on.
Click to expand...
Click to collapse
Ok, are you on stock FW? If not, which one do you have?
Is your N8000 rooted?
If so, try to flash another modem.
charly-whiskey said:
Ok, are you on stock FW? If not, which one do you have?
Is your N8000 rooted?
If so, try to flash another modem.
Click to expand...
Click to collapse
My device is on stock firmware and it is not rooted.
moussa202 said:
My device is on stock firmware and it is not rooted.
Click to expand...
Click to collapse
I would try factory reset, not much hope there. Then off to the factory.
shaun298 said:
I would try factory reset, not much hope there. Then off to the factory.
Click to expand...
Click to collapse
Thanks to everyone of you that made an effort on helping me about this problem.
I did a factory reset from setting again and also manually did a hard reset from recovery mode but the bluetooth still doesn't want to come on.
I went to SETTING, ABOUT and STATUS and I saw an available mac address for wi-fi but the bluetooth mac address was Unavailable.
I will really appreciate any help for this bluetooth issue. Thanks in advance.
moussa202 said:
Thanks to everyone of you that made an effort on helping me about this problem.
I did a factory reset from setting again and also manually did a hard reset from recovery mode but the bluetooth still doesn't want to come on.
I went to SETTING, ABOUT and STATUS and I saw an available mac address for wi-fi but the bluetooth mac address was Unavailable.
I will really appreciate any help for this bluetooth issue. Thanks in advance.
Click to expand...
Click to collapse
Just checked mine and with Bluetooth off, the BT MAC Address also shows as unavailable. It only shows up when I turn BT on.
Bulbous said:
Just checked mine and with Bluetooth off, the BT MAC Address also shows as unavailable. It only shows up when I turn BT on.
Click to expand...
Click to collapse
oo ok. but I don't know why my Galaxy note 10.1 bluetooth doesn't want to come on.
moussa202 said:
oo ok. but I don't know why my Galaxy note 10.1 bluetooth doesn't want to come on.
Click to expand...
Click to collapse
send it back its broke.
shaun298 said:
send it back its broke.
Click to expand...
Click to collapse
thanks for the help and effort.

Tab 2 P3110 stuck at "Saved, Secured with WPA/WPA2

So, after I flashed Cyanogenmod 10.1.3 for my Tab 2, it cannot connect to my wifi. I flashed it with the proper procedures, like wiping Data and Dalvik cache, I've installed the Nightly builds to try to eliminate the problem and they kept crashing, so I reverted back to 10.1.3 and still no connection. I've reset my router and made sure that my password was right. Now I have no clue what to do next
Forgive me if this is in the wrong place, I've just signed up today.
Thelitedragon said:
So, after I flashed Cyanogenmod 10.1.3 for my Tab 2, it cannot connect to my wifi. I flashed it with the proper procedures, like wiping Data and Dalvik cache, I've installed the Nightly builds to try to eliminate the problem and they kept crashing, so I reverted back to 10.1.3 and still no connection. I've reset my router and made sure that my password was right. Now I have no clue what to do next
Forgive me if this is in the wrong place, I've just signed up today.
Click to expand...
Click to collapse
Have you tried other ROMs? I've never had any problems connecting to WiFi networks on my p3100 running CM11. I have that issue too on my Ideos X6 phone, but only sometimes, which I think is caused by cheap hardware anyway.
putr4s said:
Have you tried other ROMs? I've never had any problems connecting to WiFi networks on my p3100 running CM11.
Click to expand...
Click to collapse
I'm afraid i also tried Pac-Rom 4.3 and the stock 4.2.2 Touchwhiz rom to no avail.
Does it work with the stock firmware..??
Sent from my GT-I9300 using xda app-developers app
akshaydogra said:
Does it work with the stock firmware..??
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
I've just installed the 4.1.1 firmware and it still does not connect! I might try to install a custom kernel and see if that works.
Thelitedragon said:
I've just installed the 4.1.1 firmware and it still does not connect! I might try to install a custom kernel and see if that works.
Click to expand...
Click to collapse
I've installed This kernel: http://forum.xda-developers.com/showthread.php?t=1661800 Guess what? still doesn't connect. I've run out of ideas. :crying:
Thelitedragon said:
I've installed This kernel: http://forum.xda-developers.com/showthread.php?t=1661800 Guess what? still doesn't connect. I've run out of ideas. :crying:
Click to expand...
Click to collapse
Charge your tab to aprox 70% or more and Try this:
1-download a STOCK firmware file from the internet for your region( the region thing is not necessary, but just for the sake of it )
2- boot into recovery
3- wipe data/flactory reset
4- wipe cache
5-wipe dalvik
6-format /system
7- boot into download mode and flash the STOCK firmware file using ODIN.
i am assuming you have used ODIN before in this case... if you have not, then:
1-download ODIN ( http://samsung-updates.com/Odin307.zip )
2-make sure you have the correct drivers installed
3-connect the device ( in the text box, it should say added)
4- click on the pda option and select the firmware file ( make sure ONLY auto reboot and F.reset time are checked )
5- click on START button to flash the file.
akshaydogra said:
Charge your tab to aprox 70% or more and Try this:
1-download a STOCK firmware file from the internet for your region( the region thing is not necessary, but just for the sake of it )
2- boot into recovery
3- wipe data/flactory reset
4- wipe cache
5-wipe dalvik
6-format /system
7- boot into download mode and flash the STOCK firmware file using ODIN.
i am assuming you have used ODIN before in this case... if you have not, then:
1-download ODIN ( http://samsung-updates.com/Odin307.zip )
2-make sure you have the correct drivers installed
3-connect the device ( in the text box, it should say added)
4- click on the pda option and select the firmware file ( make sure ONLY auto reboot and F.reset time are checked )
5- click on START button to flash the file.
Click to expand...
Click to collapse
Okay, I'll revert to the 4.0.4 stock firmware from http://www.sammobile.com/firmwares/3/?download=5445
Thelitedragon said:
Okay, I'll revert to the 4.0.4 stock firmware from http://www.sammobile.com/firmwares/3/?download=5445
Click to expand...
Click to collapse
It says saved, secured and says connecting with a spinning circle at the top right.
Thelitedragon said:
It says saved, secured and says connecting with a spinning circle at the top right.
Click to expand...
Click to collapse
I don't think its a ROM related issue. There must be some issue with your router itself... try resetting your router and change WPA/WPA2 password once...and reconnect again with new password. give me a feedback so that i can help you further.
lokesh.3440 said:
I don't think its a ROM related issue. There must be some issue with your router itself... try resetting your router and change WPA/WPA2 password once...and reconnect again with new password. give me a feedback so that i can help you further.
Click to expand...
Click to collapse
I reset my router, disabled TKIP encryption and disabled the MAC filter. I live in a house with 5 people so i don't think they would be happy with me doing anything else with the router. I'll try again at my friend's place and see if i can connect to his WEP connection.
Thelitedragon said:
I reset my router, disabled TKIP encryption and disabled the MAC filter. I live in a house with 5 people so i don't think they would be happy with me doing anything else with the router. I'll try again at my friend's place and see if i can connect to his WEP connection.
Click to expand...
Click to collapse
I don't think you would be able to connect to WEP networks..as android versions >2.3.7 does not have access to those networks by default....but you can give that a shot.
Thelitedragon said:
It says saved, secured and says connecting with a spinning circle at the top right.
Click to expand...
Click to collapse
This can be because of the router settings.. And also.. try to use a wifi manager from play store..
akshaydogra said:
This can be because of the router settings.. And also.. try to use a wifi manager from play store..
Click to expand...
Click to collapse
I also changed the my encryption from WPA to WPA2 and used Wifi Manager from an apk. The one from here https://play.google.com/store/apps/details?id=org.kman.WifiManager
It came in a apk that i moved to my tablet to install. Still doesn't work.
I'm losing hope.
I am having the same issue for about a week now. It does not appear to be router related, or software related either.
We have two P3113 tablets in the house, and when mine went wonky - set my daughter's with same software and her's connects without issue.
Rooted, not rooted, stock recovery or custom. Stock software from 4.0.4 to 4.2.2 and custom ROM's as well. Currently running CM 11 on both. One connects while the other does not
I think it may be hardware related
Sent from my iPhone using Tapatalk
bill_in_mtl said:
I am having the same issue for about a week now. It does not appear to be router related, or software related either.
We have two P3113 tablets in the house, and when mine went wonky - set my daughter's with same software and her's connects without issue.
Click to expand...
Click to collapse
Your problem might be related to duplicated mac addreses. Could you check if both tabs have different mac addresses.
This also counts for all others, check if there are no other devices with the same mac.
When I was building CM for both my Xperia L & Tab, they both got the same mac address because they where build on tbe same host.
Tapatalked that sh*t
Joery360 said:
Your problem might be related to duplicated mac addreses. Could you check if both tabs have different mac addresses.
This also counts for all others, check if there are no other devices with the same mac.
When I was building CM for both my Xperia L & Tab, they both got the same mac address because they where build on tbe same host.
Tapatalked that sh*t
Click to expand...
Click to collapse
Mac addresses are different. There is an issue with the IP address on the one that does not connect. It is blank by default, and manually inputting the address does not help
Thanks for the response
sent from my GT-P3113 using Tapatalk HD

No mobile data Connection with correct APN

Hello,
I am using my OnePlus One (64GiB) several days already but today i expierenced a total no data connection. It connects to WiFi and uses the Internet with no problems but if it comes to the mobile data connection it can't connect to the Internet while I have full network shown on the upper right corner. I can call and send SMS with no Problems. This Problem appeared just today and i called my service provider and they say that there is no problem with there network availability and I should check my APN settings which I checked and they are correct. Then the customer consultant said it could be my phone.
I inserted a SIM card from another service provider but it also does not connect to the mobile Internet connection.
So it seems to be that there is some faulty settings on my phone or even an defect. How can I fix that?
Thanks in Advance.
A.R.Cante said:
Hello,
I am using my OnePlus One (64GiB) several days already but today i expierenced a total no data connection. It connects to WiFi and uses the Internet with no problems but if it comes to the mobile data connection it can't connect to the Internet while I have full network shown on the upper right corner. I can call and send SMS with no Problems. This Problem appeared just today and i called my service provider and they say that there is no problem with there network availability and I should check my APN settings which I checked and they are correct. Then the customer consultant said it could be my phone.
I inserted a SIM card from another service provider but it also does not connect to the mobile Internet connection.
So it seems to be that there is some faulty settings on my phone or even an defect. How can I fix that?
Thanks in Advance.
Click to expand...
Click to collapse
Hi, so which ROM are you running?
TheShoxter said:
Hi, so which ROM are you running?
Click to expand...
Click to collapse
Its stock CM11s rom with franco.kernel r7, TWRP, and root
A.R.Cante said:
Its stock CM11s rom with franco.kernel r7, TWRP, and root
Click to expand...
Click to collapse
Ok. So your data connection was working fine with that same build previously? Nothing changed on your phone, it just stopped working?
TheShoxter said:
Ok. So your data connection was working fine with that same build previously? Nothing changed on your phone, it just stopped working?
Click to expand...
Click to collapse
Exactly
A.R.Cante said:
Exactly
Click to expand...
Click to collapse
That's strange! It seems like a very random glitch then, which often seem to fix themselves as randomly as they occur.
Have you tried rebooting your device, turning off/on data? Also, in Settings>Mobile Network Settings, is your preferred network type set to LTE, or the highest that's there?
TheShoxter said:
That's strange! It seems like a very random glitch then, which often seem to fix themselves as randomly as they occur.
Have you tried rebooting your device, turning off/on data? Also, in Settings>Mobile Network Settings, is your preferred network type set to LTE, or the highest that's there?
Click to expand...
Click to collapse
Yes all of it even an Soft-Reset
freight Voitemy
A.R.Cante said:
Yes all of it even an Soft-Reset
Click to expand...
Click to collapse
Ok, and the "Data Enabled" checkbox in Mobile Network Settings is checked? And you are positive APN is all correct?
If yes and yes, then I'm not sure what could be the problem, considering how it WAS functioning previously. I would just suggest to keep rebooting and fiddling with the Network settings, such as turning off/on data, verifying APN settings, checking Network Operator, making sure SIM is properly inserted, etc.
I wish I knew exactly what was wrong, but I'm not sure.
A.R.Cante said:
Hello,
I am using my OnePlus One (64GiB) several days already but today i expierenced a total no data connection. It connects to WiFi and uses the Internet with no problems but if it comes to the mobile data connection it can't connect to the Internet while I have full network shown on the upper right corner. I can call and send SMS with no Problems. This Problem appeared just today and i called my service provider and they say that there is no problem with there network availability and I should check my APN settings which I checked and they are correct. Then the customer consultant said it could be my phone.
I inserted a SIM card from another service provider but it also does not connect to the mobile Internet connection.
So it seems to be that there is some faulty settings on my phone or even an defect. How can I fix that?
Thanks in Advance.
Click to expand...
Click to collapse
I had this problem before. I solved this by doing a factory reset.
jong17 said:
I had this problem before. I solved this by doing a factory reset.
Click to expand...
Click to collapse
A factory reset was my last option. Thank you this did fix it.
Did you resolved? I've same problem. Factory reset didn't work for me!
Hi,
I have the same problem. I only had the phone for three weeks now and two days ago internet stopped working in the middle of browsing/watching you tube video. Did not start since even though I've tried several methods (except factory reset, as I want to leave that one as last resort.
Is there any other way than factory reset to fix it ?
Do you all have franco kernel installed?
Need help
I lost the internet connect when I installed CM12 Nightly -> thought it was a bug in the ROM and sorta lived with it.
But when I reverted to 11-S I realized that the internet connection didn't work on that rom either. I've tried everything factory reset - Soft/Hard - reset -> flash other rom's on it. EVERYTHING!!! -> I also tried a couple of different SIM-cards none of them worked, I tried to contact my ISP, they couldn't help me, they said I had all the right settings so it's most likely something with my phone...
I've got no idea on how I can fix it. and would love if anyone could help me sort this problem out -> I don't have any important data on the phone so we can reset it as much as needed...
Heroicfield said:
I lost the internet connect when I installed CM12 Nightly -> thought it was a bug in the ROM and sorta lived with it.
But when I reverted to 11-S I realized that the internet connection didn't work on that rom either. I've tried everything factory reset - Soft/Hard - reset -> flash other rom's on it. EVERYTHING!!! -> I also tried a couple of different SIM-cards none of them worked, I tried to contact my ISP, they couldn't help me, they said I had all the right settings so it's most likely something with my phone...
I've got no idea on how I can fix it. and would love if anyone could help me sort this problem out -> I don't have any important data on the phone so we can reset it as much as needed...
Click to expand...
Click to collapse
I think you need to flash the CM11s modem again,then flash cmm11s backup or clean cm11s install. I had the same problem with you,once i flash any variant of Lolipop there is no signal,and revert to CM11s no signal eighter,flash CM11s modem again,no signal neighter,then flash CM11s backup,its worked.
Need additional help
maskelisuvari said:
I think you need to flash the CM11s modem again,then flash cmm11s backup or clean cm11s install. I had the same problem with you,once i flash any variant of Lolipop there is no signal,and revert to CM11s no signal eighter,flash CM11s modem again,no signal neighter,then flash CM11s backup,its worked.
Click to expand...
Click to collapse
How do I flash the modem and backup? -- Help needed.
I have the same problem this morning. I'm certain that every settings are correct.
Reply
adesutama said:
I have the same problem this morning. I'm certain that every settings are correct.
Click to expand...
Click to collapse
I did ask One Plus about it, they send me this zip (re-uploaded) http : // www . mediafire . com / download / rmuaie7f8ch5dji / ONEPLUS % 2BONE - StockRecovery - Windows . zip
(can't post links yet) which I then ran to fix the problem. just be aware of that it locks your bootloader again, if you don't want it to lock your bootloader edit the .bat files and delete the line which says "fastboot oem lock" and you should be good to go (worked anyways for me).
Thanks a ton this really was Helpful.. I guess OnePlus One has a glitch 11.1 and now also with 12.1 CM.. Will try Factory Restore and will update.. Same thing happen with my Frnd in India.. who switch between SP's. He had to restore to fix the internet issue.
I have had the same problem on one of my oneplus 2's. One phone works fine. The other phone was working but is not connecting to Internet using data connection. I have checked the settings and they are exactly the same as the other phone which is working fine.

This problem is killing me -- "Not registered on network" -- I've tried everything

This problem is killing me -- "Not registered on network" -- I've tried everything
I have the SM-G920F model S6.
Custom rom initially was XtreStoLite 1.4a with the latest bootloader and modem installed via Odin.
It was working fine for a month or so... Then suddenly I received network connectivity issues (doesn't connect to 3G/4G and I can't make or receive any calls or texts). I thought the sim was damaged, I bought a new one with a new number, still not working.
I upgraded the rom from 1.4a to 1.5 via TWRP (doing a factory reset too).
Still nothing.
I've tried turning phone off and on, clearing the cache for the "phone" app too.
Also checked the IMEI number, it's fine, no mismatch and it's not banned/been blocked either. Tried the whole selecting a specific network/finding network automatically thing too, no dice T_T
Nothing is working.
Anyone help? It's crazy that my phone isn't working despite all these actions I'm taking!
KazuyaXR said:
I have the SM-G920F model S6.
Custom rom initially was XtreStoLite 1.4a with the latest bootloader and modem installed via Odin.
It was working fine for a month or so... Then suddenly I received network connectivity issues (doesn't connect to 3G/4G and I can't make or receive any calls or texts). I thought the sim was damaged, I bought a new one with a new number, still not working.
I upgraded the rom from 1.4a to 1.5 via TWRP (doing a factory reset too).
Still nothing.
I've tried turning phone off and on, clearing the cache for the "phone" app too.
Also checked the IMEI number, it's fine, no mismatch and it's not banned/been blocked either. Tried the whole selecting a specific network/finding network automatically thing too, no dice T_T
Nothing is working.
Anyone help? It's crazy that my phone isn't working despite all these actions I'm taking!
Click to expand...
Click to collapse
ttry with stock firmware, when you have no register on the network are 2 posibilite 1 you phone is reported or 2 is a modem problem and maybe you can fixed with the stock firm.
1
Saafir said:
Settings>System Update>Update Profile
Report back.
Click to expand...
Click to collapse
Hey Saafir,
I don't seem to have that anywhere on my phone. Checked in every single menu in the settings area......
Saafir said:
Ouch. I am unsure then bud. Sorry
Click to expand...
Click to collapse
Maybe you really should try stock ... Or if you managed to root without triping Knox you could unroot and go completely stock and if it works test it for some time and if stock dose not work ... Then at least your phone is stock ( taking in account that Knox is not triped ) go to service and see if they could help you in any way ...
Also if you have warranty at all ...
Sent from my SM-G920F using XDA Free mobile app

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