Database Users

S4 Random reboots!

Just bought a new S4 GT-I9505, for some reason it just randomly reboots! It did it 5 times in 10 hours. I tried resetting it to factory in case the apps I had installed were causing it. I don't think they were because as soon as it switched on again after being reset it rebooted after about 5 minutes.
Any ideas?
Could it just be firmware related and I have to wait for an update? Or is it hardware?
Sent from my GT-I9505 using Tapatalk 2

Do you have a microSD card in the device? If so, what kind?
Are your SIM-card properly placed into the device?

It's a 8gb San disk ultra micro sd and I have just removed and inserted it and my sim. Both are fitted correctly.

Anyone?

I'm assuming you are running stock (not rooted etc). Are you using the latest firmware? Have you checked for a system update?

proctologist said:
I'm assuming you are running stock (not rooted etc). Are you using the latest firmware? Have you checked for a system update?
Click to expand...
Click to collapse
Stock, yes. I actually restored through kies so am fully up to date. Checked for an ota to be on the safe side though and nothing.
It has only rebooted once since 9am this morning so it's improved on yesterday!

I had the exact same problem with my s3.
New or of box it rebooted randomly and always when
i stayed the programs first time.
I returned it and got a new. That is what i recommend.

Same thing happens to me.

ParaLanche said:
Same thing happens to me.
Click to expand...
Click to collapse
Are you sending yours back?

if it stays on download mode try to flash a fresh stock firmware for i9505.. you can it from samfirmware.com.. it could help if it is due to a software issue,, otherwise its going to be a hardware issue..

did you try "wipe cache partition"?? sometimes it fixes some problem if it does not return, that s what i did with my reboot problem while playing video.

I'm having the same problem I cleaned cache several times and installed the cmw recovery again. Any ideas?
Thanks

Rooted devices
Have a read HERE - Maybe of some use for those with rooted devices :fingers-crossed:

Random reboots

In the last half hour my phone has reboot 6-7 times and when opening it continues from the same exact app and all my progress before the reboot is lost. Do you know how to solve this?

I tried factory reset from setting it went to Android recovery and I chose wipe data factory reset and wipe cache then reboot and nothing happens 

Apparently there is another firmware upgrade for our phones. That may fix your problem.

Can't find another firmware update

mine was once a day. but i haven't encountered now i turn off auto update on g.play

I also have this problem. Is this hardware related? Should I return the phone?
I have reboots 2-3 times a day. I have XXU1ANJ4 firmware and my phone model SM-910F

tainka said:
I also have this problem. Is this hardware related? Should I return the phone?
I have reboots 2-3 times a day. I have XXU1ANJ4 firmware and my phone model SM-910F
Click to expand...
Click to collapse
When rebooting does it start from the same position again?

mike13ftw said:
When rebooting does it start from the same position again?
Click to expand...
Click to collapse
It reboots when the phone is asleep. I don't even use it when the reboots happen. It reboots and makes the the Samsung sound as when I turn on the phone.

[Q] GT-I9505 suddenly turning off

Hi, I'm kind of desperate here and hope you guys can help me: since about 2 weeks my phone is ramdomly turning off and then it just doesn't want to turn on, does it when it wants or shows the initial Samsung Galaxy S4 logo and turns off again, I mean it just goes dark suddenly, not showing the Samsung boot animation nor anything, it just goes black. Initially it was only when I turned on the mobile data so I flashed another modem but now it is at any moment, Wi-Fi, mobile data... Even in safe mode. At first I thought it was the ROM beacuse I was in Lollipop BTU but I've changed it about a million times with full wipes/factory resets each time and the problem stays. I'm starting to think it's a hardware problem but I can't tell and I have no clue. Thank you for your help guys. I'm currently on Lollipop stock 5.0.1 I9505XXUHOE1-I9505OXXHOD2. I've cleaned cache, dalvik cache, done wipe/factory reset and nothing. Thank you guys, I'm lost here. Sometimes it just doesn't happen and it stays working fine but somtimes it doesn't. It is not related with any app that I've noticed.
If someone with more experience can help be I would deeply appreciate it, really, thanks in advance, I'm kind of about to throw it against the wall, thanks a million.

Did you try another battery? That would be my first guess.

Lennyz1988 said:
Did you try another battery? That would be my first guess.
Click to expand...
Click to collapse
I did and didn't work. I searched in the troubleshooting forum and didn't find any similar, that's why I started this thread

Lennyz1988 said:
Did you try another battery? That would be my first guess.
Click to expand...
Click to collapse
Apparently it was a software issue, I just flashed another ROM after wipe/factory reset and it hasn't turned off, right now it's restoring from titanium. The last time it started turning off after a few days tho...

droidcol said:
Apparently it was a software issue, I just flashed another ROM after wipe/factory reset and it hasn't turned off, right now it's restoring from titanium. The last time it started turning off after a few days tho...
Click to expand...
Click to collapse
It could be caused by Knox. If you root make sure to delete Knox.

Lennyz1988 said:
It could be caused by Knox. If you root make sure to delete Knox.
Click to expand...
Click to collapse
Today it's happened twice . Just did, thanks!
Sent from my GT-I9505 using XDA Free mobile app

Lennyz1988 said:
It could be caused by Knox. If you root make sure to delete Knox.
Click to expand...
Click to collapse
It has happened again twice since I deleted Knox thanks anyway.

Freezes

My phone suddenly rebooted and now i constantly freezing and rebooting. The only thing i noticed abnormal is that a white led pops up while booting.
I do have root but ive done it over a month ago.

leoes12 said:
My phone suddenly rebooted and now i constantly freezing and rebooting. The only thing i noticed abnormal is that a white led pops up while booting.
I do have root but ive done it over a month ago.
Click to expand...
Click to collapse
Try flashing the stock kernel..
Most likely after you flash it
you will no longer have the issues you are now having now.
Good luck.
Sent from my SM-G935F using Tapatalk

Misterjunky said:
Try flashing the stock kernel..
Most likely after you flash it
you will no longer have the issues you are now having now.
Good luck.
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
It didn't work it keeps freezing then rebooting with a white led

re: rebooting / freeze
leoes12 said:
It didn't work it keeps freezing then rebooting with a white led
Click to expand...
Click to collapse
If it was my phone I would get the official samsung G938F S6 Edge+ firmware
and odin flash it.
After doing that chances are excellent that you will no longer have rebooting
issues or problems and your phone will work 100% properly.
If that don't work, I would guess the issue is due to hardware failure.
Good luck,
Have a great day!

Misterjunky said:
If it was my phone I would get the official samsung G938F S6 Edge+ firmware
and odin flash it.
After doing that chances are excellent that you will no longer have rebooting
issues or problems and your phone will work 100% properly.
If that don't work, I would guess the issue is due to hardware failure.
Good luck,
Have a great day!
Click to expand...
Click to collapse
Already tried it, didn't work. I don't think its a brick it happened out of nowhere.
I've rooted my phone over a month ago

leoes12 said:
Already tried it, didn't work. I don't think its a brick it happened out of nowhere.
I've rooted my phone over a month ago
Click to expand...
Click to collapse
If re-flashing the entire firmware package using Odin does not resolve the issue, then it may be an hardware issue. If that's the case, then I would advice you to hand in your phone to Samsung to get it fixed.

Constant Rebooting

Hi all,
My wife's S7 Edge (SM-G935F) was updated a couple of days ago, and now the phone constantly reboots (not sure if related).
I have tried factory resetting, wiping cache in recovery, and still the same thing. I have managed to get it to turn on, but it still reboots shortly after. Mostly it doesn't even start, just goes into boot-loop
Not rooted, and in great condition.
Any ideas what to try?
Thanks

Tripledrop said:
Hi all,
My wife's S7 Edge (SM-G935F) was updated a couple of days ago, and now the phone constantly reboots (not sure if related).
I have tried factory resetting, wiping cache in recovery, and still the same thing. I have managed to get it to turn on, but it still reboots shortly after. Mostly it doesn't even start, just goes into boot-loop
Not rooted, and in great condition.
Any ideas what to try?
Thanks
Click to expand...
Click to collapse
Have you tried booting into safe mode?
It's strange that an update would cause this however you could try flashing the update manually again or downgrading to what it had before using Odin
https://www.sammobile.com/firmwares/galaxy-s7-edge/SM-G935F/

Thanks, yes tried safe mode, still the reboots... Ill maybe try flashing like you suggest

Flashed the latest firmware from SamMobile, and unfortunately it's still rebooting

Tripledrop said:
Flashed the latest firmware from SamMobile, and unfortunately it's still rebooting
Click to expand...
Click to collapse
Install Smart Switch on PC.
Connect to PC and perform recovery install.
Still no luck , return your phone to Samsung service center for repair under warranty.
Sent from my SM-G935F using XDA-Developers Legacy app

brouwerchris said:
Install Smart Switch on PC.
Connect to PC and perform recovery install.
Still no luck , return your phone to Samsung service center for repair under warranty.
Sent from my SM-G935F using XDA-Developers Legacy app
Click to expand...
Click to collapse
Good shout, thanks

Unfortunately Smart Switch said unable to do on my phone
I do have insurance, but it's the last time I can claim for a year, and it costs the excess, or I have to wait several weeks if I send to Samsung
Any other ideas?

Tripledrop said:
Unfortunately Smart Switch said unable to do on my phone
I do have insurance, but it's the last time I can claim for a year, and it costs the excess, or I have to wait several weeks if I send to Samsung
Any other ideas?
Click to expand...
Click to collapse
Even on emergency recovery mode?
If not, I would call Samsung and/or you carrier tech support and see if they have any suggestions.

gaww said:
Even on emergency recovery mode?
If not, I would call Samsung and/or you carrier tech support and see if they have any suggestions.
Click to expand...
Click to collapse
Yeah even on emergency recovery.. Looks like I'll have to claim on insurance

Same issue right here, i tried almost everything... Flashed the new BRO firmware, and i still getting random resets.
i can't even get pass the first Google config in safe mode.

Same problem. Constant re-booting. Impossible to unlock, as no keyboard appears with the unlock screen. Impossible to turn off.

Try to downgrade firmware using odin to stock marshmallow , but first remember to have usb debugging checked in developer options , if they can't be accessed, the only option remains is smart switch , if that too couldn't help , then send it back for repairs.

have also got the same problem since the last OTA update from Samsung. My current version is G935FXXU1DQD7. I'm just downloading the later version DQHF to see if that resolves the issue.
A short term fix is to delete the cache from the system menu (when powering on with power button, home button and volume up button). It sometimes takes me 3 attempts to get into this menu to do the cache delete. After I have deleted the cache I can use the phone again, but it sometimes crashes and starts the boot loop when using certain apps.

I had this once even after fresh flash.
I deleted the cache when booting up.
Then factory reset when booting up..
Then when done i could flash it and solved it for me.