Galaxy S7 weird black screen - Samsung Galaxy S7 Questions and Answers

Hello,
Last week my phone froze while I was using it.
And now it refused to start.
I tried the reset method (volume down + power) but nothing.
When I am charging it, there is no red light, and the screen doesn't come on.
Strangely, today I tried again to charge it, and this time, I got the charging battery logo on the screen and the charging red light.
I was able to start it again, but it froze on the home page, and now it's dead again.
I think after one week, the phone finally run out of battery, and was maybe able to reset itself.
Here come the question: I don't care about the phone, but I care about some photos that are trapped in it.
Do you think next time there is a way to access the data without booting it up?
Should I try something with the recovery mode?
Best regards,

Hello !
Some more info :
I bought an iOpener from ifixit and open the phone to disconnect the battery connector.
Now the phone is live again (red light when charging, green battery logo), but I am pretty sure if I boot it it will freeze again .
What do you suggest ?
I had several ideas, but I am not really sure :
- I wanted to install TWRP and backup the phone, but the phone is encrypted by the samsung default system, so I don't think it's possible ? Can you confirm ?
- Can I install TWRP and reinstall a ROM without losing all my data ?
Thanks a lot !
Best regards!

Tiduster said:
Hello !
Some more info :
I bought an iOpener from ifixit and open the phone to disconnect the battery connector.
Now the phone is live again (red light when charging, green battery logo), but I am pretty sure if I boot it it will freeze again .
What do you suggest ?
I had several ideas, but I am not really sure :
- I wanted to install TWRP and backup the phone, but the phone is encrypted by the samsung default system, so I don't think it's possible ? Can you confirm ?
- Can I install TWRP and reinstall a ROM without losing all my data ?
Thanks a lot !
Best regards!
Click to expand...
Click to collapse
No. Any attempt to install TWRP or any other ROM will result in further problems and data loss.
If it is a hardware problem then your only hope is to boot the phone in its current state or safe mode to retrieve your data.
If its a software problem you can try Smart Switch to recover your data, but unfortunately all solutions require the phone to boot.

Related

Beloved Uni wont start

Hi friends,
today it happened, my beloved universal wont start anymore.
Happend last week too, but after a hard reset and restoring a backup, I've lost only one day data.
It stucks at the boot screen, showing the WM6 boot logo - for ever.
I can switch it on and of - just the WM6 boot logo appears and disapears.
The Led is blinking green (with sim inserted), but it's not showing a call. Still showing just the boot logo.
Unfortunately I can not make a hard reset. Because I have lots of new data inside my little friend, which I could not backup in the last week - too busy.
What I tried:
- remove battery
- new battery
- lots of soft rests
- entering the hard reset menu - but pressing X for exit
ROM is thingonaspring. Radio 1.18
Is there anything I can do? Except a hard reset?
Thanks
quad
quadxeon said:
Hi friends,
today it happened, my beloved universal wont start anymore.
Happend last week too, but after a hard reset and restoring a backup, I've lost only one day data.
It stucks at the boot screen, showing the WM6 boot logo - for ever.
I can switch it on and of - just the WM6 boot logo appears and disapears.
The Led is blinking green (with sim inserted), but it's not showing a call. Still showing just the boot logo.
Unfortunately I can not make a hard reset. Because I have lots of new data inside my little friend, which I could not backup in the last week - too busy.
What I tried:
- remove battery
- new battery
- lots of soft rests
- entering the hard reset menu - but pressing X for exit
ROM is thingonaspring. Radio 1.18
Is there anything I can do? Except a hard reset?
Thanks
quad
Click to expand...
Click to collapse
I would recommend to reflash the ROM
Good luck,
quadxeon said:
Hi friends,
today it happened, my beloved universal wont start anymore.
Happend last week too, but after a hard reset and restoring a backup, I've lost only one day data.
It stucks at the boot screen, showing the WM6 boot logo - for ever.
I can switch it on and of - just the WM6 boot logo appears and disapears.
The Led is blinking green (with sim inserted), but it's not showing a call. Still showing just the boot logo.
Unfortunately I can not make a hard reset. Because I have lots of new data inside my little friend, which I could not backup in the last week - too busy.
What I tried:
- remove battery
- new battery
- lots of soft rests
- entering the hard reset menu - but pressing X for exit
ROM is thingonaspring. Radio 1.18
Is there anything I can do? Except a hard reset?
Thanks
quad
Click to expand...
Click to collapse
take out your SIM and Memory card and try boot without it..
Bulldog said:
take out your SIM and Memory card and try boot without it..
Click to expand...
Click to collapse
Thanks guys, nothing worked, except installing a new ROM. Unfortunately my last week data is lost. But hey, my Uni is alive again
Same Situation
After two years of working fine, my T-Mobile MDA Pro refused to get past the boot screen. I didn't want to do a hard reset (and lose all of my program settings) and so sent the unit to PocketPCTechs for repair. Of course they did a hard reset anyway and reflashed the ROM with Mobile 6.1. I got the unit back and it worked for 8 hours, while I restored everything, and then the same thing happened: it freezes at sign-on screen. So, apparently, nothing was really repaired. Just curioius: is there a way to restore operating system files without losing all the other stuff I have on the device? Of course, most of my data and applications are on my SD card (thank goodness), and so I haven't lost any data. I do have a Sprite backup, but I've had problems with Sprite before and so prefer not to have to depend on it.
It just seems to me that there has to be a better way! If an operating system file gets corrupted, thereby preventing bootup, I should be able to fix that particular file only and not trash everything else.
transpower said:
It just seems to me that there has to be a better way! If an operating system file gets corrupted, thereby preventing bootup, I should be able to fix that particular file only and not trash everything else.
Click to expand...
Click to collapse
there's some work going on to upgrade device without loosing data... so still waiting it... until it is totally ready and working....you can find it in following thread...
All the best for the devs and thanx for the hard work and effort they are putting in...
http://forum.xda-developers.com/showthread.php?t=520009

[Q] Restart loop(not bootloop) - really weird

Hey lads,
I got a really weird problem and I've tried nearly everything I can think of. I had EMUI 2.3(b121sp06) and I tried the online OTA update to b307 if I remember right(was automatically suggesting the update) and at the update screen it loaded to about 99% and then stopped. Said not to press power while on this screen but obviously it wasn't going to finish. So I reset the phone and it started the "recovery loop", so basically keep trying to apply the update. I had to flash CWM to break out and flashed the whole system by hand(recovery,system,boot,cache,cust and userdata img files) and it starts up but it keeps resetting and seemingly it's random. Android boots up, I don't touch the phone--> boom reset. Weird thing is it even does it in recovery.
If I really want to explain the problem it's like as if my finger got stuck on the power button(that naturally made me think that the button might be f*cked), but booting into fastboot and not having resets cleared my suspicion. What I also noticed is that every time it boots up it doesn't recognize the sim card and I have no signal or whatsoever.
Tried multi tool unbricking method -> doesn't work
Tried factory reset from stock recovery(had to be fast so it doesn't reset before) ->doesn't work
Tried wiping dalvik cache and factory reset from CWM ->doesn't work
Tried killing battery by letting it keep resetting -> battery drained, reset loop stopped ->put the phone on charger->reset loop started again
I have no f*cking clue how can I get out of this, will keep trying though. Any help is appreciated, thank you!
Hi
Did you try to remove the Sd Card ? Honor 6 reboot is often due to faulty SD Card.
Which model do you have ? L04 ?
B307 upgrade sure ?
Seb
Yes, that was my first idea, still does it though. I have the L02 and I'm not positive it was b307, but it started with 3, could be b303 if there is one.
I don't know for L02 but for L04 there is a Full ROM that you can flash with the three buttons method. (Vol+,Vol-, power and put the ROM in /dload folder on the SD card).
Maybe there is such thing for L02 ?
There is, but as I said the phone restarts even in recovery. It's like the phone restarts every 30 secs except for fastboot.
if it's not SD card or internal flash problem so, it seems to be hardware related to me (
Would make sense but it occurred only after I tried OTA. Would be really surprised if that killed that hardware :-/
xXPhoenixXx said:
Would make sense but it occurred only after I tried OTA. Would be really surprised if that killed that hardware :-/
Click to expand...
Click to collapse
Have u fixed the issue yet????
kamalnath93 said:
Have u fixed the issue yet????
Click to expand...
Click to collapse
Unfortunately not, I'm out of ideas, trying to negotiate with the seller to sort something out, I think the phone is beyond saving
Same thing happened with me. Don't have any solution. Have you fixed it?
xXPhoenixXx said:
Hey lads,
I got a really weird problem and I've tried nearly everything I can think of. I had EMUI 2.3(b121sp06) and I tried the online OTA update to b307 if I remember right(was automatically suggesting the update) and at the update screen it loaded to about 99% and then stopped. Said not to press power while on this screen but obviously it wasn't going to finish. So I reset the phone and it started the "recovery loop", so basically keep trying to apply the update. I had to flash CWM to break out and flashed the whole system by hand(recovery,system,boot,cache,cust and userdata img files) and it starts up but it keeps resetting and seemingly it's random. Android boots up, I don't touch the phone--> boom reset. Weird thing is it even does it in recovery.
If I really want to explain the problem it's like as if my finger got stuck on the power button(that naturally made me think that the button might be f*cked), but booting into fastboot and not having resets cleared my suspicion. What I also noticed is that every time it boots up it doesn't recognize the sim card and I have no signal or whatsoever.
Tried multi tool unbricking method -> doesn't work
Tried factory reset from stock recovery(had to be fast so it doesn't reset before) ->doesn't work
Tried wiping dalvik cache and factory reset from CWM ->doesn't work
Tried killing battery by letting it keep resetting -> battery drained, reset loop stopped ->put the phone on charger->reset loop started again
I have no f*cking clue how can I get out of this, will keep trying though. Any help is appreciated, thank you!
Click to expand...
Click to collapse
Its might be a battery problem Or power flex cable. Try to turn on the phone during charge
guys im facing the same problem now... waiting for any solutions
I have tried stop & uninstall some app
I've tried as quickly as I can when the phone (nokia x) is on, then I stop> uninstall I consider potentially cause this problem (facebook, whatsapp, uc browser) and then it managed to prevent the continuous restarts. but problems arise even though the application had me uninstall and then I restart the phone. and it is back again, I uninstalled the app that has remained with the error settings and restart repeatedly. who knows what else : '(
xXPhoenixXx said:
Hey lads,
I got a really weird problem and I've tried nearly everything I can think of. I had EMUI 2.3(b121sp06) and I tried the online OTA update to b307 if I remember right(was automatically suggesting the update) and at the update screen it loaded to about 99% and then stopped. Said not to press power while on this screen but obviously it wasn't going to finish. So I reset the phone and it started the "recovery loop", so basically keep trying to apply the update. I had to flash CWM to break out and flashed the whole system by hand(recovery,system,boot,cache,cust and userdata img files) and it starts up but it keeps resetting and seemingly it's random. Android boots up, I don't touch the phone--> boom reset. Weird thing is it even does it in recovery.
If I really want to explain the problem it's like as if my finger got stuck on the power button(that naturally made me think that the button might be f*cked), but booting into fastboot and not having resets cleared my suspicion. What I also noticed is that every time it boots up it doesn't recognize the sim card and I have no signal or whatsoever.
Tried multi tool unbricking method -> doesn't work
Tried factory reset from stock recovery(had to be fast so it doesn't reset before) ->doesn't work
Tried wiping dalvik cache and factory reset from CWM ->doesn't work
Tried killing battery by letting it keep resetting -> battery drained, reset loop stopped ->put the phone on charger->reset loop started again
I have no f*cking clue how can I get out of this, will keep trying though. Any help is appreciated, thank you!
Click to expand...
Click to collapse
Hey I tried to root my phone and its stuck in the same restart loop. I am trying to install some roms, CM or stock. U also try and let me know if it works.
Kuber.ksp said:
Hey I tried to root my phone and its stuck in the same restart loop. I am trying to install some roms, CM or stock. U also try and let me know if it works.
Click to expand...
Click to collapse
my phone is working only on charhing.. pufffff
snrtrt said:
my phone is working only on charhing.. pufffff
Click to expand...
Click to collapse
Did you follow the guide here?
Sent from my Honor 8 using XDA Labs
In the past my battery lost it's endurance pretty much. Furthermore I've read that a defective battery causes lots of weird behaviours on our Honor 6, which was the same to mine.
In my case a replacement of the battery worked well, to get my Honor 6 back to life:
https://www.youtube.com/watch?v=ceyzXavxFAw
It's not that difficult and lasts approx. 30-45 mins. Spare Batteries are available for 6 - 10 bucks on ebay or directly from the chinese internet stores.
Borg666 said:
In the past my battery lost it's endurance pretty much. Furthermore I've read that a defective battery causes lots of weird behaviours on our Honor 6, which was the same to mine.
In my case a replacement of the battery worked well, to get my Honor 6 back to life:
It's not that difficult and lasts approx. 30-45 mins. Spare Batteries are available for 6 - 10 bucks on ebay or directly from the chinese internet stores.
Click to expand...
Click to collapse
It's really important that we use original chargers for the health of our device.

'Optimising App' Bootloop

Hiya,
Very frustrated noob here. I have an unrooted/locked-bootloader 2nd Gen Moto G and a few weeks ago I tried to turn it on after charging it overnight and after the usual loading screen it went straight to a message saying "Optimising App 1 of 152", and after going through all the 152 apps it just restarts immediately without reaching the normal PIN input screen, and starts the "Optimising" all over again and repeats this until it runs out of battery and dies. I have tried waiting for it to die, charging a little and then entering recovery mode, where I tried wiping the cache partition which made no difference. I don't mind about getting the phone up and running again as I'm getting a new one, but is there some way of getting my files off it? There are some music recordings I made that I stupidly didn't backup that I'd really really like back. For example, is it possible to reinstall the latest OTA from an SD card without losing all the data on the phone that might kick it out of whatever it's looping? Any help at all much appreciated, cheers
1. If you want to take backup of ur data then Flash TWRP Recovery And Reboot to recovery and then connect your phone to pc and tada ur done.
2. u can flash another Roms Which can solve ur booting problem too.

Galaxy S7 got stuck before boot. Need I to wait for the battery to die?

Hi, it is an older device so you might have experienced everything possible.. so,
After a long time of trying to fix that phones mind, I wiped everything avaible in TWRP
multiple times(got mad). Last thing was data.
That way I went from a bootloop to an active nothing.
Phone does not react to any command, it does not react to USB charging or on PC.
That's the case a few months back, the phone halfway in the trash and I bought
myself a iphone (hate it).
I put the Galaxy S7 on a charger today and it starts immediatly in to TWRP.
From there I tried to install a ROM that's left on the SD card, which forced
a restart into TWRP. Into download mode I managed to install the stock Oreo ROM via Odin.
It went through like a charme, all green. PASS!
The phones screen is black and does not react to any command, nothing.
I had "auto-reboot" activated.
The phone is active it's warm and I'm waiting for the battery to die again, to restart.
..meanwhile,
Can you give some advice please?
Why would the phone have struggle with the boot with stock rom installed.(which has worked before,no updates installed)
When should I install TWRP?
When do I install what kernel?
Last thing running was the LightROM with moro kernel with nothing tweaked.
Also. The issue why i deaded the phone was a camera/flash thing, where I could only take pictures with flash activated.
Front and back camera. On all camera apps, I couldnt scan my ID for banking due to that.
Also on different kernels and different ROMs including the Samsung stock.
Why would that be
Could not accept...
Jvers said:
Hi, it is an older device so you might have experienced everything possible.. so,
After a long time of trying to fix that phones mind, I wiped everything avaible in TWRP
multiple times(got mad). Last thing was data.
That way I went from a bootloop to an active nothing.
Phone does not react to any command, it does not react to USB charging or on PC.
That's the case a few months back, the phone halfway in the trash and I bought
myself a iphone (hate it).
I put the Galaxy S7 on a charger today and it starts immediatly in to TWRP.
From there I tried to install a ROM that's left on the SD card, which forced
a restart into TWRP. Into download mode I managed to install the stock Oreo ROM via Odin.
It went through like a charme, all green. PASS!
The phones screen is black and does not react to any command, nothing.
I had "auto-reboot" activated.
The phone is active it's warm and I'm waiting for the battery to die again, to restart.
..meanwhile,
Can you give some advice please?
Why would the phone have struggle with the boot with stock rom installed.(which has worked before,no updates installed)
When should I install TWRP?
When do I install what kernel?
Last thing running was the LightROM with moro kernel with nothing tweaked.
Also. The issue why i deaded the phone was a camera/flash thing, where I could only take pictures with flash activated.
Front and back camera. On all camera apps, I couldnt scan my ID for banking due to that.
Also on different kernels and different ROMs including the Samsung stock.
Why would that be
Could not accept...
Click to expand...
Click to collapse
OK so what you've done is correct flashing stock (which includes stock kernal). You have to make sure the stock ROM is correct for your device and region or it will not start.
It's not unusual to have to flash it twice with Odin.
Next up you don't need to wait for batt to die to restart. Press volume down+home+power and keep them pressed until phone restarts. Should now be in download mode, reflash correct ROM with Odin. TWRP is wiped off the phone when you flash a stock ROM.
If it doesn't go through the boot up/freezes/ does nothing etc. You need to "wipe cache" then reboot from the recovery menu.
Press and hold volume down+home+power. As soon as the screen goes black move your finger to volume up (it may take more than one attempt). Once your in recovery menu use volume up and down to move through options and power to execute. Wipe cache then reboot and allow the phone to go through all the reboot stuff. It can take a few minutes just leave it alone. It will also reboot a couple of times.
If it does nothing after 15 minutes then start again and repeat the process.
Thanks for reply.
The Phone was off for a day and after charging for 1h it still does not react to any command. Vol down + home + power does nothing. Same with vol up.
Is there a way to force a boot? Even if the PC does not recognize a device on usb?
I Tried the commands 30 secs each, plugged in and off. Also usb port is not broke since the phone is getting temperature after a while charging..

HELP!! Stock RN6 pro stuck in mi-recovery 3.0 :-(

Hello,
A few days back, when I was using my phone (redmi note 6 pro tulip), the screen suddenly greyed out and started rebooting. Within a minute, the phone went to mi-recovery 3.0.
Now, no matter how I try to reboot the phone (from recovery or by hard buttons) , it boots directly into recovery. Even If I don't do anything, it just cycles through the grey screen, mi logo, and recovery.
More info:
- The phone is completely stock, original MIUI 11 ( android 9.0) firmware from OEM. No root access, no unlocked bootloader or anything else like that. Warranty period is over.
- I can access fastboot mode.
- usb debugging isn't on iirc.
- I tried force shut down by hard buttons and disconnecting the battery, but when rebooting again, nothing changes.
- I tried booting to safe mode but it just shows a black screen and a small safe mode logo in the bottom left.
- mi-recovery 3.0 only allows to wipe all data, which is unfeasible since I have alot of unbacked data that I can't lose.
What can I do now? I've heard that flashing by edl method from an authorized account can save data. And something about a chinese mi pcsuite version. Could anyone provide more information on these? Or any other way to solve the problem?
I want to recover data (photos, videos and docs) and revive my phone.
Thanks in advance
Naa'vy said:
Hello,
A few days back, when I was using my phone (redmi note 6 pro tulip), the screen suddenly greyed out and started rebooting. Within a minute, the phone went to mi-recovery 3.0.
Now, no matter how I try to reboot the phone (from recovery or by hard buttons) , it boots directly into recovery. Even If I don't do anything, it just cycles through the grey screen, mi logo, and recovery.
More info:
- The phone is completely stock, original MIUI 11 ( android 9.0) firmware from OEM. No root access, no unlocked bootloader or anything else like that. Warranty period is over.
- I can access fastboot mode.
- usb debugging isn't on iirc.
- I tried force shut down by hard buttons and disconnecting the battery, but when rebooting again, nothing changes.
- I tried booting to safe mode but it just shows a black screen and a small safe mode logo in the bottom left.
- mi-recovery 3.0 only allows to wipe all data, which is unfeasible since I have alot of unbacked data that I can't lose.
What can I do now? I've heard that flashing by edl method from an authorized account can save data. And something about a chinese mi pcsuite version. Could anyone provide more information on these? Or any other way to solve the problem?
I want to recover data (photos, videos and docs) and revive my phone.
Thanks in advance
Click to expand...
Click to collapse
A lot of edl flashing articles on miui forum and mi community are 404 not found now. Please help!!
You solved? I'm with the exactly same problem and I found nothing specifically for this, plus, I tried wipe data already and it still doesn't work.
It maybe be button issue (the volume and power keys have gone bad probably). Remove the buttons from main board and try to boot into system.
I was facing the exact same problem.
And I discovered that it was caused because of the volume button that was kinda stuck, forcing the phone to enter recovery mode every time I tried to reboot it, as mentioned by @HumanBoy23.
After I got the volume buttons unstuck the phone booted normally.

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