Database Users

Wi-Fi won't turn on

Just got a brand new i9505 and the Wi-Fi won't turn on.
When I hit the Wi-Fi toggle it goes on for 1 sec then back off. I have tried a factory reset etc but just can't turn it on. I can't believe it's actually faulty. This is my 2nd faulty S4 out of the box. I brought a i9500 about a month ago and it keeps freezing & rebooting after a minute of use. Unfortunately I can't send that one back as it has a custom Rom & there is no way to reset the counter. I gave up on it and through it in the draw.
I decided to get a new one but went with the i9505 this time. How can I have so much bad luck. Is the S4 that unreliable?

KTM690 said:
Just got a brand new i9505 and the Wi-Fi won't turn on.
When I hit the Wi-Fi toggle it goes on for 1 sec then back off. I have tried a factory reset etc but just can't turn it on. I can't believe it's actually faulty. This is my 2nd faulty S4 out of the box. I brought a i9500 about a month ago and it keeps freezing & rebooting after a minute of use. Unfortunately I can't send that one back as it has a custom Rom & there is no way to reset the counter. I gave up on it and through it in the draw.
I decided to get a new one but went with the i9505 this time. How can I have so much bad luck. Is the S4 that unreliable?
Click to expand...
Click to collapse
I had the same problem with a custom rom wifi won't turn. All i did was change the kernel.
Hope this will solve your problem.

KTM690 said:
Just got a brand new i9505 and the Wi-Fi won't turn on.
When I hit the Wi-Fi toggle it goes on for 1 sec then back off. I have tried a factory reset etc but just can't turn it on. I can't believe it's actually faulty. This is my 2nd faulty S4 out of the box. I brought a i9500 about a month ago and it keeps freezing & rebooting after a minute of use. Unfortunately I can't send that one back as it has a custom Rom & there is no way to reset the counter. I gave up on it and through it in the draw.
I decided to get a new one but went with the i9505 this time. How can I have so much bad luck. Is the S4 that unreliable?
Click to expand...
Click to collapse
Instead of clicking the wifi toggle, why not try to go into settings and mobile networks
and turn it on there.
Good luck!

daveve said:
I had the same problem with a custom rom wifi won't turn. All i did was change the kernel.
Hope this will solve your problem.
Click to expand...
Click to collapse
Thanks for the reply daveve.
Im Running the latest Omega ROM. What Kernel did you flash?

KTM690 said:
Thanks for the reply daveve.
Im Running the latest Omega ROM. What Kernel did you flash?
Click to expand...
Click to collapse
I,m using KERNEL][INT'L][AOSP/TW][6/10/2013B] KT-SGS4 - MDM - KTweaker

You can try booting into recovery and clearing the Cache and Dalvik Cache to fix the wifi. It's worked for me and other people on this forum.

i also have the same problem on my S4, basically the wifi wont turn on, i already did flashing firmware, wipe cache and dalvik cache but still the same thing

yeah same here. I've been researchin and flashin almost a month now and nobody seriously nobody could fix this issue. shame. i hate that it happened suddenly and without a warning.

Happened to me also...This is how I fixed it (accidentally of-course ):-
---First mistakenly dirty flashed stock ROM via odin v 10...That was an honest mistake
---Couldn't start my phone due to it...FC messages were appearing again and again...
---went to download mode...directly flashed CF-Auto Root and TWRP from ODIN again...
1) Wiped everything from TWRP
2) Went to download mode and flashed Stock ROM via Odin.
3) WiFi didn't turn on even in Stock ROM (came as a shock to me)
4) went to download mode...directly flashed CF-Auto Root and TWRP from ODIN again
5) Flashed "Doctors-Amputated-V3" and "CWM-Modem-I9500ZCUJOH2_2" via TWRP.
voila !! WiFi working again in the new ROM :laugh:

Hi mate,
Could you please explain what "Doctors-Amputated-V3" is? A custom ROM?
Basically, I have flashed the stock Samsung image and a previous backup, and still have issues having used PryFi. I'm trying to get my WiFi back to stock and probably flash a kernel or revert to whatever is most compatible, so as to stop my device rebooting...
Could you please recommend a kernel or modem to flash, and then the best kernel or modem to flash afterwards, in order for maximum compatibility. My S4 has always been stock rom, just with Root.
Appreciate your time Prateekgupta!
Cheers,
prateekgupta128 said:
Happened to me also...This is how I fixed it (accidentally of-course ):-
---First mistakenly dirty flashed stock ROM via odin v 10...That was an honest mistake
---Couldn't start my phone due to it...FC messages were appearing again and again...
---went to download mode...directly flashed CF-Auto Root and TWRP from ODIN again...
1) Wiped everything from TWRP
2) Went to download mode and flashed Stock ROM via Odin.
3) WiFi didn't turn on even in Stock ROM (came as a shock to me)
4) went to download mode...directly flashed CF-Auto Root and TWRP from ODIN again
5) Flashed "Doctors-Amputated-V3" and "CWM-Modem-I9500ZCUJOH2_2" via TWRP.
voila !! WiFi working again in the new ROM :laugh:
Click to expand...
Click to collapse

flipmode_11 said:
Hi mate,
Could you please explain what "Doctors-Amputated-V3" is? A custom ROM?
Basically, I have flashed the stock Samsung image and a previous backup, and still have issues having used PryFi. I'm trying to get my WiFi back to stock and probably flash a kernel or revert to whatever is most compatible, so as to stop my device rebooting...
Could you please recommend a kernel or modem to flash, and then the best kernel or modem to flash afterwards, in order for maximum compatibility. My S4 has always been stock rom, just with Root.
Appreciate your time Prateekgupta!
Cheers,
Click to expand...
Click to collapse
---Yes its a custom ROM...
---PryFi breaks phone's Wifi every time you use it...I've given up and uninstalled that app....Flash stock rom again through ODIN...
---The process I described didn't solve my problem...My wifi worked only for 20 minutes...After that it went back to grey...
---No software trick can help if your Wifi and Bluetooth both are not working...Its basically the Wifi antenna/IC that needs to be fixed...Its a hardware issue...

[Q] S4 Powers off after android splash screen - any options other than factory wipe?

Or at least i think its powering off - i punch in my encryption passcode, it goes to android splash screen, then zip...
I have been looking at other threads and searching (this forum is huge!) but not yet found an answer, certainly not one where i dont factory wipe.
The phone was on the official optus 4.3 firmware
What i did was I used Odin 1.85, and the appropriate CF auto-root from here (cant link yet, not enough posts)
Powered off the thing, took battery out for over an hour, twice, still the same
Just trying to re-root the phone so i can back it up again, it had been a while since using Titanium
Follow the typical instructions, seemed to go fine, it just gives me the green android screen for about two seconds after encryption key is put in and always goes off
I wiped the cache too, and i flashed the current firmware again using odin (Aus OPTUS 4.3 official) - still the same.
Anyone got any ideas for me>?

Valacer2 said:
Or at least i think its powering off - i punch in my encryption passcode, it goes to android splash screen, then zip...
I have been looking at other threads and searching (this forum is huge!) but not yet found an answer, certainly not one where i dont factory wipe.
The phone was on the official optus 4.3 firmware
What i did was I used Odin 1.85, and the appropriate CF auto-root from here (cant link yet, not enough posts)
Powered off the thing, took battery out for over an hour, twice, still the same
Just trying to re-root the phone so i can back it up again, it had been a while since using Titanium
Follow the typical instructions, seemed to go fine, it just gives me the green android screen for about two seconds after encryption key is put in and always goes off
I wiped the cache too, and i flashed the current firmware again using odin (Aus OPTUS 4.3 official) - still the same.
Anyone got any ideas for me>?
Click to expand...
Click to collapse
If your phone keep's turning it off by it self then try to use a spare battery.maybe the problem is the battery and check your battery as well if the serial number starts with BD and that should need to be change soon.
Sent from Hell ?

Repulsa said:
If your phone keep's turning it off by it self then try to use a spare battery.maybe the problem is the battery and check your battery as well if the serial number starts with BD and that should need to be change soon.
Sent from Hell ��
Click to expand...
Click to collapse
Tried two different batteries.
I would think it coincidental both would prove faulty right after i tried to root!
Thanks mate

I just wiped the phone - i had to get it working, ahh well

[Q] Galaxy S4 restarts every 10 minutes

Well for starters, high everyone!
I have an issue with my S4 and I've searched all over but none of what has been recommended helps.
The issue I have is that my phone will restart about every 10 minutes (give or take). I used Reboot Logger to determine this. The phone only restarts when it is idle. It WILL NOT restart if I am using it (screen is on). The weird part is that it doesn't even go through the whole reboot sequence. The screen will stay black the entire time. The notification button pulses and the home buttons will light up like it was restarting though.
I had a bad battery and had it replaced with a stock Samsung battery. I've tried pulling the SD card, pulling the battery for 10 minutes, pulling the battery while the phone is on, and I've performed two factory resets.
The one thing I have noticed is that, after performing the factory reset, I get an "error" under the little android dude. This also happens if I do a cache wipe.
My model is the SPH-L720 running on android v4.3. The phone has never been rooted and there are no software or firmware updates that are found.
I was beginning to think that this was a hardware issue but the consistency in reboot intervals makes me believe otherwise. At this point I'm at a loss. I rooted my old phone but my experience in that area is very limited. I have read that the cache partition is bad from the factory on some of these (hence the error message) so I was thinking about rooting the phone and trying to use a good cache partition, but that's the only other option I could think of.

sounds like a voltage prob....or mem prob... id redownload a new rom..wipe wipe wipe..reinstall and that should fix it
Sent from my SPH-L720 using xda app-developers app

Insufficient voltage at idle was my first thought too, but if you haven't undervolted (since you aren't even rooted), that seems less likely. If I were you, I'd root the phone so I could do more to figure things out. Maybe try bumping up the voltage a little on the lower clock speeds.

Ok, first of all, do not root your phone. As you admitted yourself, you have limited experience in this area, and there is nothing that rooting will do for you. Not to mention, if you think you have a bad cache partition, you don't need root to fix it. Your phone is stock, running the stock kernel, there is no reason to suspect voltage issues that are not hardware related. If you root the phone, you will likely trip KNOX, and void your warranty.
My personal opinion is that your phone has a hardware problem. If you want to truly start over, either recover your phone through KIES, or better yet, download and flash via ODIN a stock MK2 ROM from this forum. Since this is a stock, signed ROM, you will not trip KNOX, and it will rewrite every partition properly on it's own. This is all assuming you don't have a hardware problem. But do not go ahead and try to fix anything yourself besides what I mentioned. You will not succeed, and likely lose your warranty in the process.
Edit: did you buy this phone new or used? If you bought it used, more than likely somebody ruined it for you. And more than likely, you can fix it. If this was a new device, more than likely it will be a warranty issue. That's why you shouldn't do anything to void the warranty.

If you're going to use odin for anything, just make sure you follow someone's directions step by step. Otherwise very bad things can happen.

im also having a slightly similar problem
Problem : The screen after a sleight amount of time of being on, or sometimes instantly when opening the lockscreen it freezes for 10-15 sec then shoots black lines across it, then reboots.
Things ive tried :
1. Installing a new rom ( from AOKP 4.4 and Triforce 4.3)
2. Changing modem (from MJA, MK2, NAE)
3. Changing the type
of Gapps i was using. (4.3 gapps for triforce, aokp 4.4 gapps, and pa gapps)
Current Phone Info:
Rom: aokp_jfltespr_kitkat_nightly_2014-02-08
Modem/Firmware: NAE
Gapps: Pa.gapps 4.4.x
Let me know if you need anything more! plz!

I'll look into Odin before I root. The phone was also purchased new. I spent most of today monkeying around with different settings to see if I could trigger the issue as well. As it turns out, the phone will only restart at idle if it's plugged into the charger, or the wifi is on. If wifi is off and it's not plugged in it's fine. I am also using the stock Samsung charger that came with the phone. Again though, if I'm actively using the phone it doesn't happen (charging or connected to wifi). I did turn the phone off earlier to charge it but would keep freezing at the sprint logo upon boot up. I thought it was bricked for a second... I wiped the cache (didn't do a factory reset) and that fixed it, but now I have that stupid issue where videos won't play on wifi, only on 4G or 3G. It's an issue I thought I had solved.
Le sigh. This is frustrating. The Odin option is looking to be my best bet it seems.

Tizamarou said:
im also having a slightly similar problem
Problem : The screen after a sleight amount of time of being on, or sometimes instantly when opening the lockscreen it freezes for 10-15 sec then shoots black lines across it, then reboots.
Things ive tried :
1. Installing a new rom ( from AOKP 4.4 and Triforce 4.3)
2. Changing modem (from MJA, MK2, NAE)
3. Changing the type
of Gapps i was using. (4.3 gapps for triforce, aokp 4.4 gapps, and pa gapps)
Current Phone Info:
Rom: aokp_jfltespr_kitkat_nightly_2014-02-08
Modem/Firmware: NAE
Gapps: Pa.gapps 4.4.x
Let me know if you need anything more! plz!
Click to expand...
Click to collapse
Since you are running a custom source-built ROM, first thing to do would be to ODIN a stock ROM. If the problems go away, you have your answer. If not, this would likely be a warranty issue. Of course you tripped KNOX most likely already.

sputnik767 said:
Ok, first of all, do not root your phone. As you admitted yourself, you have limited experience in this area, and there is nothing that rooting will do for you. Not to mention, if you think you have a bad cache partition, you don't need root to fix it. Your phone is stock, running the stock kernel, there is no reason to suspect voltage issues that are not hardware related. If you root the phone, you will likely trip KNOX, and void your warranty.
My personal opinion is that your phone has a hardware problem. If you want to truly start over, either recover your phone through KIES, or better yet, download and flash via ODIN a stock MK2 ROM from this forum. Since this is a stock, signed ROM, you will not trip KNOX, and it will rewrite every partition properly on it's own. This is all assuming you don't have a hardware problem. But do not go ahead and try to fix anything yourself besides what I mentioned. You will not succeed, and likely lose your warranty in the process.
Click to expand...
Click to collapse
Alright I'm a little confused as to what exactly I should be using. I found this:
http://forum.xda-developers.com/showthread.php?t=2575470
which is a stock ROM. Although I also found this:
http://forum.xda-developers.com/showthread.php?t=2259513&highlight=odin
which is the stock firmware.
Which one do I use, or do I use both of them?

Dfeeds said:
Alright I'm a little confused as to what exactly I should be using. I found this:
http://forum.xda-developers.com/showthread.php?t=2575470
which is a stock ROM. Although I also found this:
http://forum.xda-developers.com/showthread.php?t=2259513&highlight=odin
which is the stock firmware.
Which one do I use, or do I use both of them?
Click to expand...
Click to collapse
Neither. Use this one : http://forum.xda-developers.com/showthread.php?t=2601443
Follow instructions in the thread. This is a completely stock rom with no root or mods and will not trip the Knox bootloader. If you flash anything other than this, including custom recovery, cf autoroot, etc, you will void your warranty.

rebooting
i had this problem once and it was related to a corrupt file on my sdcard believe it or not. there are Defraggers out there for your android file system and internal SD card but your Ext sc you would have to do on your PC. it worked for me. the one i used is called CLEAN i got it off amazon app store.
cyberweasal
Dfeeds said:
Well for starters, high everyone!
I have an issue with my S4 and I've searched all over but none of what has been recommended helps.
The issue I have is that my phone will restart about every 10 minutes (give or take). I used Reboot Logger to determine this. The phone only restarts when it is idle. It WILL NOT restart if I am using it (screen is on). The weird part is that it doesn't even go through the whole reboot sequence. The screen will stay black the entire time. The notification button pulses and the home buttons will light up like it was restarting though.
I had a bad battery and had it replaced with a stock Samsung battery. I've tried pulling the SD card, pulling the battery for 10 minutes, pulling the battery while the phone is on, and I've performed two factory resets.
The one thing I have noticed is that, after performing the factory reset, I get an "error" under the little android dude. This also happens if I do a cache wipe.
My model is the SPH-L720 running on android v4.3. The phone has never been rooted and there are no software or firmware updates that are found.
I was beginning to think that this was a hardware issue but the consistency in reboot intervals makes me believe otherwise. At this point I'm at a loss. I rooted my old phone but my experience in that area is very limited. I have read that the cache partition is bad from the factory on some of these (hence the error message) so I was thinking about rooting the phone and trying to use a good cache partition, but that's the only other option I could think of.
Click to expand...
Click to collapse

sputnik767 said:
Neither. Use this one : http://forum.xda-developers.com/showthread.php?t=2601443
Follow instructions in the thread. This is a completely stock rom with no root or mods and will not trip the Knox bootloader. If you flash anything other than this, including custom recovery, cf autoroot, etc, you will void your warranty.
Click to expand...
Click to collapse
That solved my problem, thank you! I spent the last couple days testing it just to be sure I wouldn't be crying wolf. The phone has yet to restart on me even while charging or using wifi. The error message I would receive after a cache wipe or factory reset went away as well. It makes me wonder if the bad partition was what caused my old battery to fail.

Dfeeds said:
That solved my problem, thank you! I spent the last couple days testing it just to be sure I wouldn't be crying wolf. The phone has yet to restart on me even while charging or using wifi. The error message I would receive after a cache wipe or factory reset went away as well. It makes me wonder if the bad partition was what caused my old battery to fail.
Click to expand...
Click to collapse
Great, I am glad it worked out, and hopefully your problem is resolved. I doubt that your old battery failed due to a bad partition, and I have to wonder how your partition got messed up in the first place, but that's just a curiosity and is irrelevant in the grand scheme of things. Just remember that if you decide to root, cf_autoroot works but will trip the KNOX bootloader and potentially void your warranty.

XXUGNE5 (new Kitkat Update) random reboots.

I downloaded the german update to Kitkat that according to some blog I read came with fixes to Glonass and general performance updates (and also Kid's Mode, as if anyone cares about that), and so I installed it on my italian i9505, and everything seems to work fine, butnow I have random reboots sometimes, when I turn on the screen after the phone goes into sleep mode.
Basically what happens is that when I go to wake the phone using power or home button, sometimes the screen does not turn on, only the touch keys turn on, and then the blue led, and suddenly the samsung logo appears and the phone reboots.
Anyone else tried this new version? Do you have random reboots? Any way to fix them or should I just go back to UFNB3 or whatever the old one was?
I did install it after doing a full factory reset (in fact I even erased the internal memory by accident), so that's definitely not something that fixes it.
Here's you can download the firmware, dated may 2014. If it weren't for the random reboot it would be great because it fixes glonass (now gps is even faster) and comes with very little bloatware compared to the ITV version.
http://www.sammobile.com/firmwares/1/?model=GT-I9505&pcode=DBT#firmware

Im using that firmware and works perfect for me :highfive:

Joku1981 said:
Im using that firmware and works perfect for me :highfive:
Click to expand...
Click to collapse
How long have you been using it? It's random so it might happen many times to someone and very rarely to someone else. I've been using it for 2 days and I had 2 reboots.
Still, I don't know what might have caused it honestly, I did a normal odin flash and full factory reset. Then I rooted it and didn't do anything else to it yet.

I saw some of the people on sammobile complaining about the new firmware

Not sure if it's Sam mobile or another how to flash via Odin but have seen right after the how to bit a if you get bootlegs.
Sent from my GT-I9505 using XDA Free mobile app

MarkMRL said:
How long have you been using it? It's random so it might happen many times to someone and very rarely to someone else. I've been using it for 2 days and I had 2 reboots.
Still, I don't know what might have caused it honestly, I did a normal odin flash and full factory reset. Then I rooted it and didn't do anything else to it yet.
Click to expand...
Click to collapse
Im using it since Samsung released it. You can:
1. Verify you have correct baseband I9505XXUGNE5 (dial *#1234# and attach screenshot). If you have old baseband, only flash again the GNE5 firmware through ODIN.
2. Delete all entries of KNOX app in system/app with Root Explorer (In theory, SuperSU blocks KNOX app but Samsung released KNOX 2 for this new firmware):
KNOX in System/App folder:
KNOXAgent.apk
KnoxMigrationAgent.apk
KnoxSetupWizarClient.apk
KnoxSetupWizardStub.apk
KNOXStore.apk
- Reboot to Custom Recovery and Wipe cache/dalvik cache (necessary if you don't want be stuck in Samsung logo in the next boot)
- Reboot system and delete this entries:
More KNOX remains:
Folder = Data/clipboard/knox
Folder = system/container
Folder = system/etc/secure_storage/com.sec.knox.store
Folder = knox_data
Folder = system/etc/secure_storage/com.sec.knox.seandroid
File = system/tima_measurement_info ---- TIMA is a Trust-Zone of KNOX
*EDIT: I still making tests. It's working for me now all perfect. Without reboots or KNOX reminds.

Joku1981 said:
Im using it since Samsung released it. You can:
1. Verify you have correct baseband I9505XXUGNE5 (dial *#1234# and attach screenshot). If you have old baseband, only flash again the GNE5 firmware through ODIN.
2. Delete or freeze all entries of KNOX app in system/app with Root Explorer (In theory, SuperSU blocks KNOX app but Samsung released KNOX 2 for this new firmware):
KNOX in System/App folder:
KNOXAgent.apk
KnoxMigrationAgent.apk
KnoxSetupWizarClient.apk
KnoxSetupWizardStub.apk
KNOXStore.apk
Click to expand...
Click to collapse
AP:I9505XXUGNE5
CP:I9505XXUGNE5
CSC:I9505OXAGNE5
Looks correct to me.
I also deleted all the Knox apks, hopefully it won't reboot again.

I had no reboots since after I deleted the Knox files, so I guess my problem is solved. Thanks.

MarkMRL said:
I had no reboots since after I deleted the Knox files, so I guess my problem is solved. Thanks.
Click to expand...
Click to collapse
Yw. I hope you enjoy your Samsung more now :highfive:

MarkMRL said:
I had no reboots since after I deleted the Knox files, so I guess my problem is solved. Thanks.
Click to expand...
Click to collapse
I have removed those files too, but i still have random reboots and it happens quite often 5-6 time easily in the day so far.

Flashed this ROM 3 times now and no issues, ensure your clear the data and cache in recovery mode.

After delete those knox apps by Titanium Backup, I had just one reboot.
I decided search for "knox" on titanium search engine and did find 2 more apps, and deleted those also.
No random reboot for more than 12 hour since I did it.
PDA: I9505VJUGNE2
CSC: I9505ZTOGNE2
MODEM: I9505VJUGNE2
? from my Galaxy S4 LTE GT-I9505 4.4.2 ZTO VJUGNE2 Stock rooted ?

I'm seeing lots of reboots over the day. Something in the range of 10-15 a day since I got the GNE5 OTA update last weekend.
it really is starting to drive me crazy.
I tried booting into Safe Mode, and I also tried removing the SD card, but it made no difference. I also checked for bloating of the battery, but it seems perfectly normal.
Pretty much the only thing I did not yet do is a factory reset, but seeing how Safe Mode did not help, I really doubt it will help.
Unfortunately I cannot root the phone, as I have some business apps that will stop working if I do.

robert__ said:
I'm seeing lots of reboots over the day. Something in the range of 10-15 a day since I got the GNE5 OTA update last weekend.
it really is starting to drive me crazy.
I tried booting into Safe Mode, and I also tried removing the SD card, but it made no difference. I also checked for bloating of the battery, but it seems perfectly normal.
Pretty much the only thing I did not yet do is a factory reset, but seeing how Safe Mode did not help, I really doubt it will help.
Unfortunately I cannot root the phone, as I have some business apps that will stop working if I do.
Click to expand...
Click to collapse
its definitely buggy, suggest to revert back to the FNB8 rom, I went back to it after few days of torture on the new version, i removed knox, did factory reset, cache etc all the suggestion but nothing worked.

avinashadvani said:
its definitely buggy, suggest to revert back to the FNB8 rom, I went back to it after few days of torture on the new version, i removed knox, did factory reset, cache etc all the suggestion but nothing worked.
Click to expand...
Click to collapse
Im very happy with this new firmware version. Phone and battery go perfect after delete some bloatware

Joku1981 said:
Im very happy with this new firmware version. Phone and battery go perfect after delete some bloatware
Click to expand...
Click to collapse
you are so lucky :good::good:

avinashadvani said:
its definitely buggy, suggest to revert back to the FNB8 rom, I went back to it after few days of torture on the new version, i removed knox, did factory reset, cache etc all the suggestion but nothing worked.
Click to expand...
Click to collapse
I did a factory reset just now and will see how it will go.
Is it possible to revert to a previous rom without triggering the KNOX WARRANTY VOID 0x1 issue? I had understood that doing any kind of firmware flashing, other then OTA, will trigger it.

robert__ said:
I did a factory reset just now and will see how it will go.
Is it possible to revert to a previous rom without triggering the KNOX WARRANTY VOID 0x1 issue? I had understood that doing any kind of firmware flashing, other then OTA, will trigger it.
Click to expand...
Click to collapse
according to what i know flashing these official samsung roms via odin will not trigger the knox warranty, its mentioned in the rom details page on sammobile when you download the rom and see the installation instructions.
i am not too bothered about that warranty as i flash a lot of roms to try anyway so please verify it :fingers-crossed:

I had random reboots and by uninstalling knox apps it is fix but this rom is so laggy and wifi connection drops some times...
I did a clean install... it is so annoying me....
this rom is sucks... I don't want to go back to the previous version...
Where is my thanks!!

MarkMRL said:
I downloaded the german update to Kitkat that according to some blog I read came with fixes to Glonass and general performance updates (and also Kid's Mode, as if anyone cares about that), and so I installed it on my italian i9505, and everything seems to work fine, butnow I have random reboots sometimes, when I turn on the screen after the phone goes into sleep mode.
Basically what happens is that when I go to wake the phone using power or home button, sometimes the screen does not turn on, only the touch keys turn on, and then the blue led, and suddenly the samsung logo appears and the phone reboots.
Anyone else tried this new version? Do you have random reboots? Any way to fix them or should I just go back to UFNB3 or whatever the old one was?
I did install it after doing a full factory reset (in fact I even erased the internal memory by accident), so that's definitely not something that fixes it.
Here's you can download the firmware, dated may 2014. If it weren't for the random reboot it would be great because it fixes glonass (now gps is even faster) and comes with very little bloatware compared to the ITV version.
http://www.sammobile.com/firmwares/1/?model=GT-I9505&pcode=DBT#firmware
Click to expand...
Click to collapse
You should do factory reset bafore and after flashing.

Huge problem S4 not working anymore..

So this is my sad story..
I bought a second hand Samsung S4 (i337M Telcel) Unlocked, the day i got it, i tested in front of the seller everything was nice and smooth.. So i payed..
I was very excited and i proceed to make the Root proccess, at beginning i was having issues with the drivers and Odin, then i was able to fix it..
Anyways long story short i ended up with the ROOT, CYANOGENMOD CM11, and PHILZ 6.. The first day was working fine my cellphone.. (I must say i rooted in my life at least 4 devices even an S4 i9500 all of then with success and not a single problem.. Using them form months and even gears.. The latest was a Moto E..)
Ok so the i337M was working good since the first morning with the root, but in the afternoon it just turned off one time.. Was weird but i didnt pay much atention..
The second day i was listening music and suddenly it turned off, and since then the cellphone is not able to keep on for more than 10min..
Some times i can load the complete OS and ofter 2 min it turn off sometimes at the Samsung S4 logo turn off something i must say is that the Device every single time i turn it on, on the Samsung S4 screen says "kernel is not seandroid enforcing" in red letters, some people say it happens when the root process is not made correctly some says it normal because its rooted..
I already installed from Odin the Stock ROM from SamMobile, and the problem is exactly the same.. A friend of mine told me it could be the Logic Card AKA Motherboard.. But i want to believe its just a software problem.. Cuz' before i rooted cellphone was working..
- Download mode: Works like a charm not a single problem and basically its the only way i keep trying different options to install on the phone..
- Discovery mode: With CWM sometimes works good, sometimes it just turn off, with Philz runs good not turning off or something and its how i was able to wipe data, cache, dalvik, factory reset to the cellphone..
Im thinking in starting over like pretending i didnt do anything to the cellphone, try again the root, the rom, the PHILZ (dont know how to call it).. and hope for the best..
Any advice or reliable links where i can download the correct files for my S4 i337M.. You are basically the last reliable source i have to fix my S4 if you give up with me, then i must admit my cellphone has passed away ..
Hope you can help me thanks in advance and have an excellent day!!:laugh::good:

The first troubleshooting step (to determine if the issue is hardware or firmware related) is to flash back to stock with Odin. Since you have completed this step and find that the problem is still present, this suggests that it is a hardware problem.
I have seen a custom kernel cause sleep of death, which makes the phone appear to have turned off. But in those cases, flashing the stock kernel fixed the problem.
Perhaps you should see if you can return the phone to the seller for a full refund.

creepyncrawly said:
The first troubleshooting step (to determine if the issue is hardware or firmware related) is to flash back to stock with Odin. Since you have completed this step and find that the problem is still present, this suggests that it is a hardware problem.
I have seen a custom kernel cause sleep of death, which makes the phone appear to have turned off. But in those cases, flashing the stock kernel fixed the problem.
Perhaps you should see if you can return the phone to the seller for a full refund.
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Thanks for your reply.. I still dont know how but with Philz recovery, i was able to make a full wipe, i mean it deletes everything every single folder previously made was erased, and i can tell you that because i have a folder called ROOM where i places my ROM, Kernel, etc.. So i can flash them in discovery..
So i erased everything and then proceeded to install via Odin the Stock Rom and guess what it works like a charm, not a single problem.. So, so far the cellphone is ok.. I tested for two hrs.. Now i tried to install a custom ROM and its doesnt load from the Samsung S4 screen jaja... But im still having acces to discovery and download mode so thats ok..
Just two advices.. Never ever download files from Youtube ****y links.. Always go to the source.. Youtubers are assholes.. Real help and information comes from real people that knows what they are talking about like this forum and also updated and real ROM's come from the main source not Mega o Linkbucks...
Other advice embrace your self to do it.. Study every single question you have in Android, from KERNEL to ROM and ROOT.. Isn't that difficult..
One more question, Which ROM with Lollipop would you suggest to install i have the i337M?

SUNDR1V3R said:
So i erased everything and then proceeded to install via Odin the Stock Rom and guess what it works like a charm, not a single problem.. So, so far the cellphone is ok.. I tested for two hrs.. Now i tried to install a custom ROM and its doesnt load from the Samsung S4 screen jaja... But im still having acces to discovery and download mode so thats ok..]
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May I make a suggestion? Now that you have the phone working, can you possibly just use it for a week without doing anything to it? Don't try to root it or do anything other than text, make phone calls, and install a few programs. This will establish a baseline of behavior for your device, so you'll be able to tell when its behavior is out of the ordinary.
I understand your desire to make it your own. I got my S4 brand new from AT&T and said that I would wait at least a month before rooting it or changing roms, in case there was a problem and needed to return it. I had good intentions, but I couldn't stand it anymore and rooted it after only 3 days! It will take a lot of patience, but you really need to use it for more than a few hours to make sure that the hardware is okay.

I agree take baby steps, week stock, week root, week recovery. Figure out if its hardware or one of the steps is causing it.