Xiaomi Note 4x Mediatek, Black Screen - Xiaomi Redmi Note 4 Questions & Answers

Got this Xiaomi from gearbest with miui 8.2, y unlock bootloader, install twrp and flash to miui 8.5 stable. Everything was fine, almost a week since i flash, install apps, wifi, calls, youtube, charge everything seems ok. But today he was no showing me nothing on screen, black, sounds and the system to be fine because i can hear when i touch icons or setting etc. I restart and turn off nothing, one time show me logo mui but just once. I try to enter bootloader menu and twrp as well and black screen still present. On the fastboot cmd menu it appears, but no screen, even i turn off and charge to see if the battery shows and nothing, it charge but not shows the icon.
Is a problem of factory or software (flash twrp)?

Kenshin1870 said:
Got this Xiaomi from gearbest with miui 8.2, y unlock bootloader, install twrp and flash to miui 8.5 stable. Everything was fine, almost a week since i flash, install apps, wifi, calls, youtube, charge everything seems ok. But today he was no showing me nothing on screen, black, sounds and the system to be fine because i can hear when i touch icons or setting etc. I restart and turn off nothing, one time show me logo mui but just once. I try to enter bootloader menu and twrp as well and black screen still present. On the fastboot cmd menu it appears, but no screen, even i turn off and charge to see if the battery shows and nothing, it charge but not shows the icon.
Is a problem of factory or software (flash twrp)?
Click to expand...
Click to collapse
If software was the cause, it will be easily fix after resetting/clean flashing.
Since the phone still detecting from PC, use this to format/clean flash your device through fastboot and see if it fix.
On the other hand, those problems you've indicated seems to be a serious hardware issue (LCD/Display related one). Still got that warranty? ye? You could bring the phone to nearest xiaomi service centre and have it checked.

Related

"Broke" Coolpad Torino with TWRP - Help

Helloooo,
I have a big problem, cant get my phone running again.
The sad thing is, I just got it 4 hours ago
So heres what I have done to my Phone:
I rooted it with Kingo-Root and then installed a app where TWRP was listed, there also was CWM and stuff and I thought I have to flash my phone there with TWRP to install a new ROM and stuff and I clicked there on flash.
Then it asked me if I want to restart in, I cant remember recovery and/or download mode, I clicked yes and from there the trouble began.
When it starts the Coolpad Logo appears, then it say "Download and install the package?", to confirm volume up, to abort volume down. If I press abort, it just goes off, the restart may leads to the battery charging screen ( usb cable is always connected!!), if I press volume up, it says "Information - Do not disconnect data cable", but it says it for forever, nothing happens.
If data cable isnt connected, it shows Logo and then goes off, doesnt do anything.
I wish I would have never done that, Im too stupid for stuff like that.
Can someone help me out?
Hopefully
Hi are you able to enter in TWRP recovery in orden to try to flash him back to stock rom ?
Sadly no
I read some stuff on the internet, and tried it:
I installed andoid studio on my PC, with all that drivers, connected the Phone to my PC and looked it up in the device manager.
Before it was just recognized as "Other devices - Android" without any information, now I had the Hardware ID and put that into the setup text of Google drivers and installed them.
My PC somekind recognizes the phone. (but not like normally)
Maybe i can get the Stock Rom to phone that way somehow?
Edit: its called adb interface in device manager
Now I tried to set up the stock-rom via YGDP, and well, it kinda worked.
Im now out of this mode.
If I start the phone it makes its starting sound and it response to "key"-presses by vibrating, but, no screen, its just pitch black.
Its not listed in device-manager anymore.
Any suggestions?
bad support.
Paskebe said:
Now I tried to set up the stock-rom via YGDP, and well, it kinda worked.
Im now out of this mode.
If I start the phone it makes its starting sound and it response to "key"-presses by vibrating, but, no screen, its just pitch black.
Its not listed in device-manager anymore.
Any suggestions?
Click to expand...
Click to collapse
Bad support for this phone...
My is dead after 20 days .
Paskebe said:
Now I tried to set up the stock-rom via YGDP, and well, it kinda worked.
Im now out of this mode.
If I start the phone it makes its starting sound and it response to "key"-presses by vibrating, but, no screen, its just pitch black.
Its not listed in device-manager anymore.
Any suggestions?
Click to expand...
Click to collapse
That is probably because you flash incompatible firmware which does not recognize display of your device .
Search on the internet for another genuine rom and repeat flashing process .
I had alsmost same issue when I flashed Blu Studio D572i with rom of D572a as I remember , was black screan completely but buttons are working (showing light) .

Honor 8 stuck on boot (no fastboot, no recovery, stock rom)

Hi guys,
first of all thank you for taking your time and reading through this. I'm not completely new to android, nor using fastboot and recovery. I flashed a few phones over the past years I even resurrected bricked ones. However I have no idea what is happening to my Honor 8. One thing to mention, it's the latest Nougat update, and a STOCK ROM.
It all started this afternoon. The phone suddenly reboot while using it. After that, the android screen came on, then Honor animation and.. freeze. Completely. I had to reboot using the long press method since it was stuck between the bootloader and the rom itself. It started up ok after that.
An hour passed, and while I was typing a message, it froze again. I could go back to home but the phone was really slow. After opening up Messenger again, it froze completely. Had to restart again with the long-press reboot method. It started up ok, entered the sim pin and upon entering the screenlock code it froze again, completely. Long-press reboot, again.
Since then, the phone won't boot. It gets stuck every time on "Honor powered by Android" for about a minute, then it reboots itself. I even got some weird green screen with a blue and a red rectangle, but that just stopped after a few reboots.
I mentioned that I know how to recover and fix stuff when something acts weirdly, but that's not the case, I can't do ANYTHING. No fastboot, no recovery, no button combinations, I can't even turn off the phone. It just keeps rebooting on and on, and yes, the battery will eventually die, but I have no access to any recovery options. I even tried dload but no luck.
It's still under warranty so I can send it back but I just rather fix it at home (without taking it apart), because I don't want to wait 3 weeks to get fixed. But it seems like that is the only option right now, I have never ever seen anything like this happen.
Any help or comment is appreciated. Even if it's not possible to do it at home (hardware issues?), I am really curious what can be the cause of this issue (damaged rom, filesystem permission issues?).
Thanks.

Poco F1 not booting any more

I am looking for help for my phone - has anyone had this kind of problem before and solved it?
As per the title - I cannot start my phone any more, I do see the yellow Pocophone logo and "unlocked" status - then the screen goes black and the phone seemingly does nothing any more. Trying to get into recovery does the same, however I am able to get into Fastboot mode.
What did i do - nothing Was using my phone while on the bus, put it into my pocket where it must have turned off, when trying to switch it back on I noticed the behaviour above. I was on TWRP 3.3..0.0 and the Pixel Experience ROM (Android 10) when the phone failed.
ADB on my computer does not recognize the phone, but MiFlash does see the phone. I tried to flash the current stock MIUI - with "success" from MiFlash but no effect on boot behaviour.
The charging led is off when connected to charger or computer.
I am a bit stuck with other things i could try- does anyone out there have an idea? Oh - and the additional bit - this is my own import from China to Europe, from a bit more than a year ago (January...) so I am out of any warranty thing.
Cheers
Flo

bootloop

hello everyone,
my redmi note 3 pro special (kate) with locked bootloader and always original roms (never modified) has been stopped for about 2 years due to inactivity, but before it had always worked great!
wednesday I tried to turn on my kate.
the device went into continuous bootloop. whereupon I tried to enter fastboot, activate edl and flash with miflash a whole series of roms, from the last, to 9.6, 9.5, 6.7 and all those that can still be found, but always with the same disappointing result: the device makes the first start (sometimes forcing it with a restart because it remained enchanted for hours in the initial animation after the "mi" logo), but immediately during the initial configuration of the so returns to restart without allowing use.
whereupon, I decide to open the back of the redmi and disconnect the battery overnight, in the hope that this could solve any problems.
but unfortunately nothing...
after yet another flash and I start, I can't even start this morning: when I press the power button the fixed initial logo "mi" starts, goes off and starts again ... I'm practically in infinite bootloop ...
I only need the kate as a forklift, but I would be sorry to have to throw it away completely.
does anyone have a suggestion to get out of this troubles?
kletius said:
hello everyone,
my redmi note 3 pro special (kate) with locked bootloader and always original roms (never modified) has been stopped for about 2 years due to inactivity, but before it had always worked great!
wednesday I tried to turn on my kate.
the device went into continuous bootloop. whereupon I tried to enter fastboot, activate edl and flash with miflash a whole series of roms, from the last, to 9.6, 9.5, 6.7 and all those that can still be found, but always with the same disappointing result: the device makes the first start (sometimes forcing it with a restart because it remained enchanted for hours in the initial animation after the "mi" logo), but immediately during the initial configuration of the so returns to restart without allowing use.
whereupon, I decide to open the back of the redmi and disconnect the battery overnight, in the hope that this could solve any problems.
but unfortunately nothing...
after yet another flash and I start, I can't even start this morning: when I press the power button the fixed initial logo "mi" starts, goes off and starts again ... I'm practically in infinite bootloop ...
I only need the kate as a forklift, but I would be sorry to have to throw it away completely.
does anyone have a suggestion to get out of this troubles?
Click to expand...
Click to collapse
Factory reset
Black_Stark said:
Factory reset
Click to expand...
Click to collapse
I've tried several times... but... nothing
kletius said:
I've tried several times... but... nothing
Click to expand...
Click to collapse
Did u replace any component at repair shop?
Black_Stark said:
Did u replace any component at repair shop?
Click to expand...
Click to collapse
I've tried factory reset, flashing several roms, unmount the battery... now the phone Is witouth battery, i want to try keep witouth Energy a few days ...

Huawei P Smart 2019 pot-lx1 stuck in boot loop, seemingly unrecoverable?

So my mom and I have the same phone, a Huawei P Smart 2019 pot-lx1.
The problem
The phone started doing a boot loop anytime you try to turn it on.
It vibrates and shows the Huawei logo like normal, but after the logo the screen turns dark (not off, just dark, the backlight seems to still be on).
Sometimes after this black screen, a 'recharging' icon is visible in red for a brief moment. It's a red circle with a red lightning symbol in the middle.
It does this regardless of whether it's plugged in or not.
I have no idea what this means because as far as I'm aware, the device can function fine without power (see further down below).
After this black screen or flashing the red recharging icon, it just reboots and does the same.
What I tried
The phone refuses to open Erecovery mode (hold volume up and plug in the device). I have confirmed that this method -should- work since I tried it on my own phone of the same model. In the case of my mom's phone it just shows a black screen like normal.
I can get the phone into fastboot, which is great. It tells you to open HiSuite on your computer, which I do, only for HiSuite to tell me "Your device is not supported for system recovery". Furthermore, any commands that could help me return 'Command not allowed', this is returned from the bootloader of the phone and is NOT an OS permissions issue. I've tried stuff like booting into TWRP or wiping userdata this way but it's simply not allowed.
Regarding the battery, I've tried unplugging the phone while it's in fastboot mode. It just stays on like expected and doesn't turn off, so I don't think the battery has no charge.
From what I gather online, the phone has an FRP lock which prevents you from doing anything that could result in the phone getting a reset. FRP can supposedly be disabled, I've tried dc-unlocker but it simply didn't work, presumably the phone is 'too new' because it wasn't in the model list. (I used detection & then the blue nuke option that said Temp FRP unlock or something like that). There are sites that offer FRP unlock passwords which can be used with 'fastboot oem frp-unlock XXX' but I REALLY don't trust these sites and the prices are expensive.
USB debugging is not enabled and I cannot possibly enable it because the phone will never boot, hence I cannot hop into adb and disable FRP that way or do anything else that adb could. I'm essentially stuck.
I also tried some random things like holding volume up + volume down + power during boot. I have also tried countless times to get into erecovery but it simply will never get to that point.
I also tried downloading the phone's firmware and putting all the files where the UPDATE.app is also located in the 'dload' folder on an SD. I also tried putting an 'update.zip' in the root, but this didn't do anything and I think it's pointless unless you can boot into erecovery.
My mom and dad suspect they damaged something related to charging the phone, either the pins or something inside the device by inserting the charger agressively, is that possible at all? It could explain the red charging icon regardless of battery status, but I'm really not sure.
Same problem!
Hi I have the exact same problem with my huawei. Could you able to solve your problem? If so, could you tell me how?
Thank you in advance.

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