8.4 Tab S Forgets WiFi Networks On Reboot - Galaxy Tab S Q&A, Help & Troubleshooting

I'm on stock, rooted odex. I believe the issue happened after I rooted. On boot, it forgets all previously connected WiFi networks. The only mods I've flashed was the 4-way boot (which didn't work since I have CWM and not TWRP). I've tried deleting the dhcp files in the dhcp folder and the wpa files in the etc/wifi folder. Neither worked.
Anyone else having this issue?
Edit: Factory wipe didn't rectify the issue. Guess I'll ODIN back to stock. Hopefully this is a hardware issue.

Strange.....mine works fine, rebooted numerous times.

kenkiller said:
Strange.....mine works fine, rebooted numerous times.
Click to expand...
Click to collapse
Figured out the issue. I mistakenly flashed the T800 autoroot instead of the T700 autoroot.

Hi
I am stepping in on this thread, because I encounter this issue.
I just rooted by Galaxy Tab S 8.4 (LTE) - T705 and I followed this site http://theunlockr.com/2014/08/09/how-to-root-the-samsung-galaxy-tab-s-8-4-lte/, used as instructed CF_AutoRoot_Port_T700_BeansTown106.tar with Odin3 v1.85 .
- when rebooted the wifi forgets the password, (as long as you dont reboot the wifi is okay, and i can connect to other network and connect back to the original wifi.)
Do anybody knows how to fix this issue?

lee.n said:
Hi
I am stepping in on this thread, because I encounter this issue.
I just rooted by Galaxy Tab S 8.4 (LTE) - T705 and I followed this site http://theunlockr.com/2014/08/09/how-to-root-the-samsung-galaxy-tab-s-8-4-lte/, used as instructed CF_AutoRoot_Port_T700_BeansTown106.tar with Odin3 v1.85 .
- when rebooted the wifi forgets the password, (as long as you dont reboot the wifi is okay, and i can connect to other network and connect back to the original wifi.)
Do anybody knows how to fix this issue?
Click to expand...
Click to collapse
I think you have to change some sort of file to something to make it remeber it. I cant remeber what the fix was but it was somewhere in the cfautoroot fourm.

lee.n said:
Hi
I am stepping in on this thread, because I encounter this issue.
I just rooted by Galaxy Tab S 8.4 (LTE) - T705 and I followed this site http://theunlockr.com/2014/08/09/how-to-root-the-samsung-galaxy-tab-s-8-4-lte/, used as instructed CF_AutoRoot_Port_T700_BeansTown106.tar with Odin3 v1.85 .
- when rebooted the wifi forgets the password, (as long as you dont reboot the wifi is okay, and i can connect to other network and connect back to the original wifi.)
Do anybody knows how to fix this issue?
Click to expand...
Click to collapse
HI,
Consider also using Skyhigh Kernel, it fixes your issue.
http://forum.xda-developers.com/galaxy-tab-s/orig-development/kernel-skyhigh-kernel-t2870143
Best Regards
J

My nonrooted Tab S forgets WiFi on reboot and when I switch WiFi off and then on.
I found that this probably is a KitKat bug (http://forum.xda-developers.com/showthread.php?t=2685519)

If you are rooted then this is what fixed it for me.
http://zidroid.com/how-to-fix-wi-fi-issue-on-android-4-4-2-kitkat/

tovarish said:
If you are rooted then this is what fixed it for me.
http://zidroid.com/how-to-fix-wi-fi-issue-on-android-4-4-2-kitkat/
Click to expand...
Click to collapse
Unfortunately I have no root, so I flashed the newest firmware (T705XXU1ANH1 – XEH from France) and it fixed Wi-Fi

So, I using mine tab with and 6 on the latest image from Brazil.
It is rooted and with TWRP.
It doesn't save wifi networks. If I turn wifi on and of it looses everything.
Just to be clear, it had this problem before I installed TWRP. It took me quite some time to notice the problem so I don't know if it is related with the root method.
I even flashed a custom kernel, but still no luck.
Does any one know of a solution for this issue on Android 6? Stok?
Thanks

Maheidem said:
So, I using mine tab with and 6 on the latest image from Brazil.
It is rooted and with TWRP.
It doesn't save wifi networks. If I turn wifi on and of it looses everything.
Just to be clear, it had this problem before I installed TWRP. It took me quite some time to notice the problem so I don't know if it is related with the root method.
I even flashed a custom kernel, but still no luck.
Does any one know of a solution for this issue on Android 6? Stok?
Thanks
Click to expand...
Click to collapse
try to flash a diffedent rom. i personally never had this issue but maybe a new rom may help.

Related

[Q] Messed up my Tab S 10.5, no wifi cant flash stock firmware

Not sure where and what I have done wrong.
I wanted to root my Tab S 10.5 (SM-T800), so used Odin v3.07 also tried with 3.10.6 using CF-Auto-Root-chagallwifi-chagallwifixx-smt800.tar and also tried CF_AutoRoot_Port_T800_BeansTown106.tar but rendered my WiFi useless, it just constantly scans, says saved secured, lit in blue signal, tried 2G and 5G, no luck.
Next I tried to put back to stock firmware T800XXU1ANF8_T800XAR1ANF6_HOME.tar but gets so far then just fails.
It is a new UK Samnsung Galaxy Tab S 10.5 UK.
I am novice so please be gentle regarding tech talk lol.
SuperSU v2.01 Chainfire Installed fine
I would prefer rooted with wifi, failing that i want to go back to stock
Any help appreciated
djpleasure said:
Not sure where and what I have done wrong.
I wanted to root my Tab S 10.5 (SM-T800), so used Odin v3.07 also tried with 3.10.6 using CF-Auto-Root-chagallwifi-chagallwifixx-smt800.tar and also tried CF_AutoRoot_Port_T800_BeansTown106.tar but rendered my WiFi useless, it just constantly scans, says saved secured, lit in blue signal, tried 2G and 5G, no luck.
Next I tried to put back to stock firmware T800XXU1ANF8_T800XAR1ANF6_HOME.tar but gets so far then just fails.
It is a new UK Samnsung Galaxy Tab S 10.5 UK.
I am novice so please be gentle regarding tech talk lol.
SuperSU v2.01 Chainfire Installed fine
I would prefer rooted with wifi, failing that i want to go back to stock
Any help appreciated
Click to expand...
Click to collapse
The only thing i can suggest is ironrom 1.8 , its an original stock touchwiz 4.4.2 but rooted plus an amazing kernal at its heart and runs faster and better than the original.....i had a problem whenvflashing roms so tried this as last resort ahd it solved everything.
EDIT
Heres the link http://forum.xda-developers.com/galaxy-tab-s/development/prerooted-stock-touchwiz-rom-t2973107
djpleasure said:
Not sure where and what I have done wrong.
I wanted to root my Tab S 10.5 (SM-T800), so used Odin v3.07 also tried with 3.10.6 using CF-Auto-Root-chagallwifi-chagallwifixx-smt800.tar and also tried CF_AutoRoot_Port_T800_BeansTown106.tar but rendered my WiFi useless, it just constantly scans, says saved secured, lit in blue signal, tried 2G and 5G, no luck.
Next I tried to put back to stock firmware T800XXU1ANF8_T800XAR1ANF6_HOME.tar but gets so far then just fails.
It is a new UK Samnsung Galaxy Tab S 10.5 UK.
I am novice so please be gentle regarding tech talk lol.
SuperSU v2.01 Chainfire Installed fine
I would prefer rooted with wifi, failing that i want to go back to stock
Any help appreciated
Click to expand...
Click to collapse
Any joy fella?
pdolton2000 said:
Any joy fella?
Click to expand...
Click to collapse
wifi started to work again for some strange reason, however did try to update rom twrp with the rom you suggested, but it fails to install.
djpleasure said:
wifi started to work again for some strange reason, however did try to update rom twrp with the rom you suggested, but it fails to install.
Click to expand...
Click to collapse
What error does it give after failing on all these installs...is it "/system" error or does it say something else?
I had problems with twrp refusing every rom...then i got an img file of philz touch and installed that using another app and rebooted and installed a rom from philz touch recovery and boom it actually installed the rom....i can gife you expanded info on dl links and names of software if you want it pal

[Q] Wifi Issue on Canadian SM-N900W8 with New official Lollipop..help

I updated to official Lollipop rom on Canadian Note 3 (SM-N900W8) and hit with big WiFi issue. I searched xda and couldn't find the solution. How can I say, Phone don't remember my WiFi after I reboot phone. I have to re-select the WiFi, re-input password and it connects fine. But next reboot, It won't even remember the WiFi i connected to and have to redo all steps again. Anyone with same issue..pleas help.
WiFi issue, what rom?
raju_xda said:
I updated to official Lollipop rom on Canadian Note 3 (SM-N900W8) and hit with big WiFi issue. I searched xda and couldn't find the solution. How can I say, Phone don't remember my WiFi after I reboot phone. I have to re-select the WiFi, re-input password and it connects fine. But next reboot, It won't even remember the WiFi i connected to and have to redo all steps again. Anyone with same issue..pleas help.
Click to expand...
Click to collapse
So I'm actually a little bit curious, what official n900w8 rom are you talking about. I've been looking for one for some time now and nothing. Please link if you can.
With regards to the WiFi. I have heard of this before. People with S5 have reported almost similar issues and solution was a script edit.
There has been ports of the new N900t lollipop rom that after a proper kernel "lean kernel" and a S5 WiFi fix. All this has worked on the n900w8 however video recording and nfc don't work.
I'm really curious as to what your set up is.
I went back to 4.4 because I use nfc so much and video recording is a must.
Thanls so much
VOLTS
Lollipop released for Canadian Note 3 SM-N900W8. Telus, Bell and virgin mobile release 5.0 two days back. See link http://www.sammobile.com/firmwares/database/SM-N900W8/
Have you fixed this?
I have the same problem. I tried editing the build.prop file as suggested on some posts for the 900T but it seems that my phone is not detecting root correctly, so even editing the file reverts when power cycling the phone
raju_xda said:
I updated to official Lollipop rom on Canadian Note 3 (SM-N900W8) and hit with big WiFi issue. I searched xda and couldn't find the solution. How can I say, Phone don't remember my WiFi after I reboot phone. I have to re-select the WiFi, re-input password and it connects fine. But next reboot, It won't even remember the WiFi i connected to and have to redo all steps again. Anyone with same issue..pleas help.
Click to expand...
Click to collapse
Fix Wifi
Edit build.prop ro.securestorage.support and ro.securestorage.knox from true to false. If they are already false change to true and then back to false. Reboot.
You must fix your root issue first, before you can apply this fix...
Good luck
Äx
Thanks. I went back to custom rom with custom kernel on sm-n900w8. I will try once flash official rom. NFC not working in Custom rom.
Custom rom
raju_xda said:
Thanks. I went back to custom rom with custom kernel on sm-n900w8. I will try once flash official rom. NFC not working in Custom rom.
Click to expand...
Click to collapse
I have the rom installed in my N900W8 and at first I was suffering from the WiFi password not saving. However after a few complete wipes both in twrm and in the data wipe service menu.
Now with 5.0 and with lean kernel my passwords save.
So there is a way for it to save and mine works.
AxAtAx said:
Fix Wifi
Edit build.prop ro.securestorage.support and ro.securestorage.knox from true to false. If they are already false change to true and then back to false. Reboot.
You must fix your root issue first, before you can apply this fix...
Good luck
Äx
Click to expand...
Click to collapse
Actually I am using your vision international ROM, works great. I flashed official rom but was too bloated and slow and video recording was not working. Your rom is awesome and fast and already debloted. Only thing not working is NFC which I don't use anyway. Great work..keep it up.
VoltsLee said:
I have the rom installed in my N900W8 and at first I was suffering from the WiFi password not saving. However after a few complete wipes both in twrm and in the data wipe service menu.
Now with 5.0 and with lean kernel my passwords save.
So there is a way for it to save and mine works.
Click to expand...
Click to collapse
If lean kernel custom kernel? If everything works I. E. NFC, video recording.
raju_xda said:
Actually I am using your vision international ROM, works great. I flashed official rom but was too bloated and slow and video recording was not working. Your rom is awesome and fast and already debloted. Only thing not working is NFC which I don't use anyway. Great work..keep it up.
Click to expand...
Click to collapse
Nice, I was going to say, try a different kernel.:good:

[Q] OTA Weirdness - Tab Pro 10.1

Got a notice of an OTA last night. Figured it was for Lollipop so told it to proceed. Once the tablet rebooted the WiFi radio was disabled. Looked in settings which showed that WiFi was on, but no radio. Went online an saw that Samsung hasn't sent out the Lollipop update for the 10.1.
Question 1 - how do I restore my tablet since I can't get WiFi turned on?
Question 2 - where did this weird OTA come from?
Thanks for any help you can give.
Mike
mikethevol said:
Got a notice of an OTA last night. Figured it was for Lollipop so told it to proceed. Once the tablet rebooted the WiFi radio was disabled. Looked in settings which showed that WiFi was on, but no radio. Went online an saw that Samsung hasn't sent out the Lollipop update for the 10.1.
Question 1 - how do I restore my tablet since I can't get WiFi turned on?
Question 2 - where did this weird OTA come from?
Thanks for any help you can give.
Mike
Click to expand...
Click to collapse
Firmware for SM-T520 http://www.sammobile.com/firmwares/database/SM-T520/ select your country and download.
Instructions
Extract (unzip) the firmware file
Download Odin v3.10.6
Extract Odin ZIP file
Open Odin v.3.10.6
Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons)
Connect phone and wait until you get a blue sign in Odin
Add the firmware file to AP / PDA
Make sure re-partition is NOT ticked
Click the start button, sit back and wait few minutes
Others having same issue
Thought I'd post this as info. Checked over at Android Central and several people appear to be having the same issue. Looks like bad firmware from Samsung. Bad build number is: KOT49H.T520UEUAOD1. Wiping and factory refresh may help temporarily, but eventually the wifi radio will be disabled. I'm going to wait for Samsung to get their act together and flash a fresh build when it's released.
Thanks for the help.
Mike
My 10.1 Tab Pro was updated too but wifi is working fine. I'm not rooted though. Same build number that you mentioned.
Sent from my SM-T520 using XDA Premium HD app
Wifi Issue as well
I had the same update come across last night and now I can't connect to wi-fi to save my life. Really pissed off. Done 2 factory resets already, reset my modem at home, turns out it happens everywhere and not just at home. Wifi says it's on but doesn't pick up any networks in my area and won't connect to the 1 that is already known on my tab. PLEASE HELP
Got the update last week. Wifi is fine but now daily I get a random reboot. Never had any problems before. Thanks Sammy!
Bad Firmware
mikethevol said:
Thought I'd post this as info. Checked over at Android Central and several people appear to be having the same issue. Looks like bad firmware from Samsung. Bad build number is: KOT49H.T520UEUAOD1. Wiping and factory refresh may help temporarily, but eventually the wifi radio will be disabled. I'm going to wait for Samsung to get their act together and flash a fresh build when it's released.
Thanks for the help.
Mike
Click to expand...
Click to collapse
I have the same issue with the build described.
Does one know how to correct this firmware update if the tablet is unable to connect to the internet?
AndroidSMT520 said:
I have the same issue with the build described.
Does one know how to correct this firmware update if the tablet is unable to connect to the internet?
Click to expand...
Click to collapse
You can download an earlier firmware from sammobile.com. If you are in the US, use the firmware for cellular South and make sure it's a 4.4.2 that you are downloading. After you download it, you can flash it with Odin. There are several threads here on xda that describe this process. If you still need further help, post again.
TabPro 10.1 SM-T520, v4.4.2 Build KOT49H.T520UEUAOD1 No wifi after update
Boy am I glad to find you guys with the same problem as I have. Couple of days ago I saw an update message and decited to go for it. Well, as all of you know, wifi stops working. Factory resets gets it working again but once everything is restored it stops working again! This is quite frustrating and I hope Samsung is working on a fix right now. I haven't been on XDA for a while and only rooted phones before. So how is the rooting/mod scene for tablets. Any good Custom Roms out there we can use until/when this is resolved? I'm good with directions and done some custom roms on my phones before. Let me know what's the good ROMS out there are...the bloatfree version is a welcome even without KNOX, I don't really use it.
k8108 said:
You can download an earlier firmware from sammobile.com. If you are in the US, use the firmware for cellular South and make sure it's a 4.4.2 that you are downloading. After you download it, you can flash it with Odin. There are several threads here on xda that describe this process. If you still need further help, post again.
Click to expand...
Click to collapse
Thanks for your feedback.
I had to use the firmware from November 2014 to get it to work and restore my wi-fi.
Again thanks
KOT49H.T520UEUAOD1 is the problem
Well I figure this particular firmware has a problem. Because even after factory reset, wifi works once and goes back to not working. So the best solution is to get an earlier version. I went back to Sep 15, 2014 version and it works well. Took forever to download from sammobile though. So if you need to flash to a previous version that works. I have post a link to the firmware I have on my OneDrive that got it working again, hopefully it will be faster for you to get your tablet working again. Here is a link. This is for the US Tab Pro 10.1 SM-T520.
T520UEUANI1_T520XARANI1_XAR.zip
https://onedrive.live.com/redir?resid=a628a551d04c1283!721&authkey=!ALKYL7IcLyekSgg&ithint=file,zip
thank you for those who warned about the wifi problems this OTA introduced. I'm just going to keep ignoring the tablets request to update. I thought i got a great deal on this tablet when i got a refurbished one for under $300 several months ago... but samsungs lack of support for this tablet is astonishing.
nxp3 said:
Boy am I glad to find you guys with the same problem as I have. Couple of days ago I saw an update message and decited to go for it. Well, as all of you know, wifi stops working. Factory resets gets it working again but once everything is restored it stops working again! This is quite frustrating and I hope Samsung is working on a fix right now. I haven't been on XDA for a while and only rooted phones before. So how is the rooting/mod scene for tablets. Any good Custom Roms out there we can use until/when this is resolved? I'm good with directions and done some custom roms on my phones before. Let me know what's the good ROMS out there are...the bloatfree version is a welcome even without KNOX, I don't really use it.
Click to expand...
Click to collapse
i'm being prompted to install a 83.54 mb update, i dont know if its the bad OTA you list or if its a new one. Anyone have any idea what it is?

Official 5.1.1 for T-Mobile (607t) issues

So I've having a bit of an issue with my 607t and I recall seeing some of the issues before. I was rooted before and on a custom 5.1.1 for a 605. Everything worked except it would sometimes boot back to recovery after power down. (known issue)
So today I went ahead and downloaded the official 5.1.1 and used Odin to flash back to stock. I'm not having any OS issues but am having a problem with wi-fi and the LTE radio. Wondering if anyone else has seen this and what was your fix?
1) The wi-fi will not remember passwords after a reboot.
2) After the update the unit is telling me that no SIM card is installed. Verified SIM is good on another device and tried a different SIM in the Note with same results.
Have flashed via ODIN again, factory reset a few times, remove/install SIM and the problems persist. I'm thinking there must be something from the 605 kernel that the ODIN flash isn't fixing.
Would appreciate any tips. - Thanks!!!!
You have to update the bootloader. There's a check-box in Odin for that.
kcrudup said:
You have to update the bootloader. There's a check-box in Odin for that.
Click to expand...
Click to collapse
That was the ONE thing I didn't do. And it worked.
That box was always greyed out when I loaded the file and didn't notice after the file processed that it was an available option.
Thanks!!!!

Problem with WiFi connectivity

model: GT-N7100
currently using cynogenmod 5.1.1
Previously i used to have 4.4.2. I tried cynogenmod for resolving this issue but doesn't work. My phone is able to connect to hotspot, generated by other mobiles. When I switch on my wifi, it detects the available networks but while connecting to them it shows messages like "Wi-Fi Connection Failure", "authentication error occurred ".
please help me with this issue
Factory Reset
Hello and thank you for using Q/A,
can you please try a factory reset.
Regards
Trafalgar Square
Trafalgar Square said:
Hello and thank you for using Q/A,
can you please try a factory reset.
Regards
Trafalgar Square
Click to expand...
Click to collapse
Ya tried that but problem remains same
Hi,
if you want, you can try a Marshmallow ROM.
Kind regards
Trafalgar Square
I have the same issue. Suddenly, my GN2 could not connect to any Wifi router (secure or open), while connecting to hotspots by others.
Phone could connect only if it is very close to the router (couple of centimeters)...which i don't really understand !!
My phone was rooted with TWRP, rune KK 4.4.2 and working very fine for almost 3 years without one issue...this is the first
I tried everything could be done....
- Factory reset
- Rom installation (CM 11.0)
- Stock Rom from sammobile (clean one 4.4.2)
- Even install modem drivers of other revision (don't recall it)
I gonna try marshmallow and see!!
Any other suggestions will be much appreciated..
Cheers,
Same Problem Still No Solution
I have the same problem, this occurred sometime after installing the Temasek ROM 9.1 before that was working brilliantly on Temasek and on Stock ROM reverted back to stock did a factory reset but no avail had posted on the Temasek for N7100 by Trafalgar Square but received no reply.
Searched everywhere no answers, went to the service center waited 2 hrs and those duds did not now what to do.
Please if anyone knows what to do please let us know. Thanks
A link to my problem in detail :
http://forum.xda-developers.com/show...postcount=1708
subzero2014 said:
I have the same issue. Suddenly, my GN2 could not connect to any Wifi router (secure or open), while connecting to hotspots by others.
Phone could connect only if it is very close to the router (couple of centimeters)...which i don't really understand !!
My phone was rooted with TWRP, rune KK 4.4.2 and working very fine for almost 3 years without one issue...this is the first
I tried everything could be done....
- Factory reset
- Rom installation (CM 11.0)
- Stock Rom from sammobile (clean one 4.4.2)
- Even install modem drivers of other revision (don't recall it)
I gonna try marshmallow and see!!
Any other suggestions will be much appreciated..
Cheers,
Click to expand...
Click to collapse
I'm having the exact same problem!
It only connects to WiFi if I am standing less than 1 meter from the router! (otherwise it sees the signal, even from far away; but fails to connect)
I'm on 4.4.2, no changes for months solid as a rock then this issue appeared!
Any ideas/solutions?
Bump for visibility ^^
sarasasasa said:
I'm having the exact same problem!
It only connects to WiFi if I am standing less than 1 meter from the router! (otherwise it sees the signal, even from far away; but fails to connect)
I'm on 4.4.2, no changes for months solid as a rock then this issue appeared!
Any ideas/solutions?
Click to expand...
Click to collapse
Check this one:
https://www.youtube.com/watch?v=Ty-ktnu2rjg

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