Database Users

i9505 black screen after reboot

Hello,
I have a problem with my i9505. The phone had been rooted with stock ROM. I've installed Avast Antivirus and decided to install Anti Theft feature. Installing it requires reboot. After confirming rebooting the phone beeped twice and rebooted. And this is where my problem begins.
After reboot the screen is black. It shows nothing. The phone boots, LED shows charging, connecting and disconnecting charger makes phone beep, but with few seconds delay. Connecting to PC shows content of phone memory.
I have managed to get to recovery. Odin had seen the phone so I've flashed official Samsung ROM. It didn't help.
Surprisingly after few hours with battery removed the phone started to work normally... until the next reboot.
And now it works until the reboot. After reboot the screen is black. After about 30 minutes without battery it works again.
The phone never got dropped or damaged in any way.
Before I get my phone to the service (hoping that they'll fix it under warranty) I'd like to ask you, if somebody had similar problem and knows how to fix it.
Thanks in advance.

Same problem on same phone
Hi,
I too had this problem, and fixing it wasn't difficult, however I used the TWRP recovery which @ingvarr_zaag probably doesn't have installed (seeing as they had stock firmware). Nevertheless I can confirm this identical problem on my own i9505.
I was using a CM10.1 nightly build for my i9505 and attempted to install the AVAST Anti-Theft feature using the root install method. On the first attempt at installation there was a free-space error, in which the amount of free space shown in the /system partition had overflowed and showed negative free space. To work around that error I filled up my /system partition until there was only 100mb free and then the install worked. All went well until I did a reboot; the phone hung at the i9505 screen.
I tried rebooting the phone and removing the battery for a short while, but nothing worked - the phone still hung at the i9505 screen. However, all other functions worked, so I just reflashed CM10.1 after wiping /cache, /data (but not /data/media), /system, and the Dalvik-cache (though that is in /cache AFAIK so pretty redundant). All was fine after that reflash, other than the annoyance of having to set everything up again (didn't make a backup recently).
Obviously the Anti-Theft wasn't very secure if it could be removed by a simple reflash. But to be fair, I highly doubt any software can protect itself from a format!
Anyway, just letting people know that I can confirm this this problem exists, and how I fixed it on my phone.

ingvarr_zaag said:
Hello,
I have a problem with my i9505. The phone had been rooted with stock ROM. I've installed Avast Antivirus and decided to install Anti Theft feature. Installing it requires reboot. After confirming rebooting the phone beeped twice and rebooted. And this is where my problem begins.
After reboot the screen is black. It shows nothing. The phone boots, LED shows charging, connecting and disconnecting charger makes phone beep, but with few seconds delay. Connecting to PC shows content of phone memory.
I have managed to get to recovery. Odin had seen the phone so I've flashed official Samsung ROM. It didn't help.
Surprisingly after few hours with battery removed the phone started to work normally... until the next reboot.
And now it works until the reboot. After reboot the screen is black. After about 30 minutes without battery it works again.
The phone never got dropped or damaged in any way.
Before I get my phone to the service (hoping that they'll fix it under warranty) I'd like to ask you, if somebody had similar problem and knows how to fix it.
Thanks in advance.
Click to expand...
Click to collapse
Flash stock firmware using odin
Go to stock recovery there factory reset and wipe
Reboot
Note all data will be lost take backup b4
.

sheomualjy said:
Hi,
I too had this problem, and fixing it wasn't difficult, however I used the TWRP recovery which @ingvarr_zaag probably doesn't have installed (seeing as they had stock firmware). Nevertheless I can confirm this identical problem on my own i9505.
Click to expand...
Click to collapse
I had Clockwork Recovery installed but I couldn't use it, because after reboot the screen was black. I managed to get to android recovery and flashed stock Samsung ROM by Odin. It didn't help.
After 2 weeks in service it's possible that today I get my phone back. Finally, because two weeks with Samsung Galaxy Advance were miserable.
Actual status on service's page says, that they replaced main board in my phone.
BTW: no Avast Anti Theft ever again.

Freezing and rebooting

Classic "my phone keeps freezing and rebooting". I am quite in the know about flashing roms and such.
It started on the stock firmware 6.1.1 (i think it was). I dd factory resets, cache wipes the lot. It would still randomly reboot.
So i flashed Telstra version of 7.0. Still froze every now and then. Did the same things as above.
Flashed TWRP and wiped everything, flashed Renovate Rom and the bootloader for it, Still did it. Numerus factory resets and wipes of everything. It would freeze at any point from startup, to having setup the phone and making phone calls or on facebook or whatever. It would even freeze in twrp, or loading twrp.
I found that the data partition was corrupt so i re partitioned to ext4. Still nothing. I reformatted every partition so the phone was a complete brick with nothing on it and after flashing clean again it would still do it.
Whats the issue that I'm missing, or is there a way to log so i can find where it keeps getting stuck? It gets hot and blue light flashes and i have to hard reset it or sometimes i have to let the battery drain so i can turn it back on again.
pls help?

Hmm i will give you an advice so you dont have to wait for your battery to drain...just press volume down and power button for like 5 secs and phone will force boot. Anyway back to your problem...did you tried flashing latest stock samsung firmware?

raz_il_dio said:
Hmm i will give you an advice so you dont have to wait for your battery to drain...just press volume down and power button for like 5 secs and phone will force boot. Anyway back to your problem...did you tried flashing latest stock samsung firmware?
Click to expand...
Click to collapse
This advice doesn't work with my phone even with holding the buttons for 30 secs and more. For rebooting I can only wait until the battery is completely drained. With little hope for another way shortening time to the next reboot any help is appreciated.

Same here...experiencing the same prob...

Same problem.
Sent from my Redmi Note 4 using Tapatalk

smallcapsicum said:
Classic "my phone keeps freezing and rebooting". I am quite in the know about flashing roms and such.
It started on the stock firmware 6.1.1 (i think it was). I dd factory resets, cache wipes the lot. It would still randomly reboot.
So i flashed Telstra version of 7.0. Still froze every now and then. Did the same things as above.
Flashed TWRP and wiped everything, flashed Renovate Rom and the bootloader for it, Still did it. Numerus factory resets and wipes of everything. It would freeze at any point from startup, to having setup the phone and making phone calls or on facebook or whatever. It would even freeze in twrp, or loading twrp.
I found that the data partition was corrupt so i re partitioned to ext4. Still nothing. I reformatted every partition so the phone was a complete brick with nothing on it and after flashing clean again it would still do it.
Whats the issue that I'm missing, or is there a way to log so i can find where it keeps getting stuck? It gets hot and blue light flashes and i have to hard reset it or sometimes i have to let the battery drain so i can turn it back on again.
pls help?
Click to expand...
Click to collapse
Sounds like you need your motherboard replaced i had the same issues on marshmallow thought the nougat update would fix it but realized it was a hardware fault not software..left it in store to get fixed and on repair sheet it said faulty motherboard..
Sent from my SM-G935F using XDA-Developers Legacy app

As i know some S7 have motherboard hardware problem, mine has too, what help? warranty and they replaced motherboard. But if you root, you can say good bye to warranty, they look at knox first with this problem.

[Q] Note 4 N910F Bootloop

Hi folks,
I have a problem with my note4. I can't make it boot to OS, I tried flashing android 6.0.1, 5.1.1 and 5.0.1 with odin but none of them seems to be working. Flashing goes without a problem, however phone just keeps on rebooting after it displays: Samsung GALAXY Note4. I am able to access both recovery mode and download mode(I also tried wiping data and cache, but no luck). I wonder if anyone of you had similar problem and if you know is this a software or harware issue? Thanks in advance!

I can think of two different issues (both of which have been thoroughly discussed before, removing the need to start a new thread had you used the search function).
First: If connecting a charger stops the reboots, it's your battery. Easy fix as all you need is a new battery. Second, if it keeps rebooting when plugging in, your eMMC is probably failing. This is a hardware issue and can't be fixed at home.
But - before we jump into conclusions, can you provide a bit more details? The exact details of the roms you're trying to flash, how old your phone is, are the roms made for your exact model etc. Let's get to the bottom of this.

Samsung Note 4 N910F is not stuck in bootloop, still doesn't really boot

Hey everyone,
I have been looking around online for several days now, but haven't been able to find a description of the problem I have with my n910f nor a solution.
When I got the phone it was stuck in bootloops and so I though it was soft bricked.
After I installed the custom rom and the latest version of TWRP via Odin, I thought that the problem was fixed, because the phone booted and I was able to start the configuration of Android (where it asks you for language, time zone etc.)
However, the phone turned itself off during this process. So I wiped everything and tried again, the same thing happened.
I then flashed it with Lineage, but it would turn itself off even before the logo appeared.
Then I flashed it with Ressurrection ROM, but again, the phone turns itself off during booting.
I can access download and recovery mode without any problems, I can flash roms and Odin works like a charm. I also used 2 different batteries.
Does anyone has an idea what I could try? Could it be the version of TWRP I am using (3.0.2.0)? Or is it a hardware issue?
Thank you!!

Hi, I have this exact same issue with my N910T and so far haven't found a solution to this. I really love my Note 4 so I'd like to know if this issue can be solved or not. I event went to a supposed repair shop and they couldn't figure out the problem, guess they weren't that good.

Sorry to hear this.
I have found issues that seemed similar, but not quite the same, and people hinted that it could be a worn out motherboard that is causing this top happen. But before I open up the phone (at the potential risk of breaking at least the screen) I would try everything else.
Or is there a way to test whether the motherboard is defective?

Its the plague of overheated, worn out emmc memories, sadly. Once it happen,the only way is a new/used motherboard,prefferably C model.

eMMC failure, snapdragon models are susceptible to this.

Tüddels said:
Hey everyone,
I have been looking around online for several days now, but haven't been able to find a description of the problem I have with my n910f nor a solution.
When I got the phone it was stuck in bootloops and so I though it was soft bricked.
After I installed the custom rom and the latest version of TWRP via Odin, I thought that the problem was fixed, because the phone booted and I was able to start the configuration of Android (where it asks you for language, time zone etc.)
However, the phone turned itself off during this process. So I wiped everything and tried again, the same thing happened.
I then flashed it with Lineage, but it would turn itself off even before the logo appeared.
Then I flashed it with Ressurrection ROM, but again, the phone turns itself off during booting.
I can access download and recovery mode without any problems, I can flash roms and Odin works like a charm. I also used 2 different batteries.
Does anyone has an idea what I could try? Could it be the version of TWRP I am using (3.0.2.0)? Or is it a hardware issue?
Thank you!!
Click to expand...
Click to collapse
I suggest flashing stock rom with Odin after wiping your whole device in TWRP. I've had the same thing about 2 months ago.

Hey,
thank you for your responses. Yes, I read a lot about it being a motherboard problem.
I got it to work now thanks to this post: https://forum.xda-developers.com/note-4/general/downgrade-official-mm-to-kitkat-t3383885
First nothing happened, but after I flashed Modem and the original Bootloader again (after installing the rom) the phone turned on and I was able to use it for a while (20mins maybe). Then suddenly it turned itself off and stayed on the "Samsung Galaxy" screen for a long time.
Apparently a lot of people are using Wakelock and it seems to be working for some of them, but that seems to defy the point somehow.

KirbyFan64 said:
I suggest flashing stock rom with Odin after wiping your whole device in TWRP. I've had the same thing about 2 months ago.
Click to expand...
Click to collapse
Which Stock Rom did you use exactly? Is your phone working fine?

my S7 edge is hard bricked

I had BlackDiamond.N8.PIE.V2.0 over a year on my phone and it was working with no problem.
today I decided to update my phone, first updated the TWRP to the latest version "TWRP-3.4.0-0-hero2lte" updated without any problem,
then I downloaded BlackDiamond N8 Port V10.0, wiped everything (even internal storage), and installed the ROM,
it installed successfully, wiped the caches, reboot to the system, android loaded without any issue,
after loading into android, I added my google account, and I was testing the phone, after 10min of working with the phone,
while I was testing the camera app (it's was a little laggy) my phone freezes and after a couple of seconds, the screen went black! I thought it's gonna reboot, but nothing happened.
I tried to hard reset the phone by pressing "power+volume down+home key", but it didn't work, connecting to the charger is nothing happen, there is no LED light, my phone is completely dead
does anyone have any idea why this happened? installation and booting to android was completely fine, everything worked fine, and suddenly my phone freeze and hard bricked.
you know this is not the first time I'm installing custom ROM, I'm done it before and I've always been careful, never had any issue like this, but this time really I don't know what happened and to be honest, I really love my S7 Edge, I don't want to replace it.

aalireza439 said:
I had BlackDiamond.N8.PIE.V2.0 over a year on my phone and it was working with no problem.
today I decided to update my phone, first updated the TWRP to the latest version "TWRP-3.4.0-0-hero2lte" updated without any problem,
then I downloaded BlackDiamond N8 Port V10.0, wiped everything (even internal storage), and installed the ROM,
it installed successfully, wiped the caches, reboot to the system, android loaded without any issue,
after loading into android, I added my google account, and I was testing the phone, after 10min of working with the phone,
while I was testing the camera app (it's was a little laggy) my phone freezes and after a couple of seconds, the screen went black! I thought it's gonna reboot, but nothing happened.
I tried to hard reset the phone by pressing "power+volume down+home key", but it didn't work, connecting to the charger is nothing happen, there is no LED light, my phone is completely dead
does anyone have any idea why this happened? installation and booting to android was completely fine, everything worked fine, and suddenly my phone freeze and hard bricked.
you know this is not the first time I'm installing custom ROM, I'm done it before and I've always been careful, never had any issue like this, but this time really I don't know what happened and to be honest, I really love my S7 Edge, I don't want to replace it.
Click to expand...
Click to collapse
Possibly a hardware problem. You will have to take some technician for a more accurate analysis.

Dark Stranger said:
Possibly a hardware problem. You will have to take some technician for a more accurate analysis.
Click to expand...
Click to collapse
if it's hardware, why I didn't have any problem before updating the ROM? is it possible updating damaged the phone?

one more thing, I saw some people use a dongle called USB-JIG on dead Samsung phones, that enter phone to download mode and after that flashing with Odin.
do you think it's work on my phone?

aalireza439 said:
if it's hardware, why I didn't have any problem before updating the ROM? is it possible updating damaged the phone?
Click to expand...
Click to collapse
It can occur, despite being very difficult. I already corrupted the xperia bootloader I had, but it never happened on my samsung devices. I even have a s7 edege and I am changing his rom and I never had any problems. As I said, you should take the device to an assistance center to get an idea of what really happened. Perhaps it could be a hidden problem, which was only expressed by changing the rom, or it could give the same problem with the old rom. What I can say is that a simple exchange of rom, would hardly cause a hard brick in a device.
---------- Post added at 12:52 AM ---------- Previous post was at 12:50 AM ----------
aalireza439 said:
one more thing, I saw some people use a dongle called USB-JIG on dead Samsung phones, that enter phone to download mode and after that flashing with Odin.
do you think it's work on my phone?
Click to expand...
Click to collapse
You can also try, because if your device is not completely dead, it can come back to life with this procedure. But I still recommend taking the device in for a technical assistance.

There are 3 cases in this:
1. If you flashed a corrupted/wrong bootloader in twrp/flashfire or anything that doesn't blocks a wrong flash like odin. Your phone is dead for good. Only a usb jig/repair box or a local mobile technician can fix that.
2. Your phone is bugged with black screen. Installing a custom rom can cause weird things. Sometimes hard stuck with screen off/black .. now you need to wait for battery draining itself completely and then plugging in charger and trying to get in download mode. If you could go in download mode then you can reflash through odin and it will be back to normal. Although sudden turn off and then complete deadness is often a hardware failure.
3. If phone after draining completely doesn't shows life when connected to charger and can't go in dl mode then its either hardware failure or bootloader problem like in no.1 point. You will need to take it to a mobile repairer or use a repair box/jig nevertheless.
Sent from my hero2lte using XDA Labs