question - Xiaomi Redmi Note 4 Questions & Answers

When I formatted persist partition, the lineageos fingerprint camera can not be used, the install MIUI9 fingerprint, camera repair, but if I install the camera system before and after the original set will mobilize the death card, WeChat will sweep the way stuck in MIUI flyme well what is the reason is the bottom board package...... I didn't use the data format and WQ, is now the biggest problem is the camera fault, why not native, you can help me, sorry my bad English

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[Q] bootloader unlock password- Huawei G630-U00

hello,
I couldn't find any other forum to discuss about this version of Huawei mobile phone. I really need help since the last legitimate EMU update ruined the whole system and now my new mobile phone that I have never had a chance to use it is like a trash device... I hope someone here can help me to recover it since i tried all ways I found on internet.
I bought this mobile from China and bring it to Europe. Since I wanted to remove some chinese default software (that wasn't basic software but really annoying), I used an app and rooted the mobile phone. so I removed some of chinese stuff and installed some of good software. Everything worked fine and I tested skype and I had high resolution picture with 8 Mega pixel camera. I tested all its functionality and it was really good...
I noticed that there is a new legitimate update for this OS, since I still didn't have any sd memory, I couldn't have a backup of this old system and this was a big mistake...
anyway... I let it do the legitimate update for EMU... but immediately after reboot, I noticed that Camera and bluetooth are out of functions... so I first thought the problem is with bluetooth configuration but I was wrong since the internal memory was read only and no longer available.
I formatted the internal memory via computer (the part which was available) but no luck... I bought a sd card and changed the storage from internal to external but this didn't help to function bluetooth and camera...
I had a back up from /system/apps and then removed manually the bluetooth.apk and also its odex file. then restarted the system, clear dev cache and tried to install bluetooth.apk again. but I received error message and couldnt' do that. so again I copied those file back to its location.
So bluetooth turns on now, can send signal but for receiving or sending file, it fails, It can also pairs with other device.. So I thought it should be something related to permissions. I again checked the bluetooth permissioin on /etc/permissions/platform.xml and notice they are ok.
I changed the permission of storage and added the external storage to the list and added group storage_rw.
but this also didn't solve the problem with camera and bluetooth.
several times reset to factory mode didn't solve the problem...
I tried to hack the bootloader but I could not unlock it... I sent all information to [email protected] and asked them to send me bootloader password and provide them with all detail information about the device and accepted that the device is out of warrant but I received no response...
I installed "safe system remover apps" and after having backup of Gallery2.apk, I uninstalled it (it is related to camera and all gallery information)... but with no luck I could install it again...
So, I am really hopeless now since I don't know whatelse I can to do... the system doesn't functioning and I need to load on it the custom ROM but the device only can go to fastboot and cannot load the recovery mode anymore and factory reset from the UI is only reset the mobile to fastboot without doing anything else.
I tried to run the factorymode.sh from the device but I receive error messages to access some files such as bluetooth parameters/power
I couldn't myself find this file on the directory that it looks for.
I would really appreciate it if you can tell me any way that I can unlock the bootloader from the device (because outside of the device I tried different applications but with no luck...)
I have a cutom ROM for G630-U20 (not exact version for this device but almost similar) and if I can have a bootloader password I can try this one or any other customized ROM.
I would appreciate any way that you can show me to solve the problem.... either by changing permissions to solve this problem.
Thank you.

[Q] Camera Failed - maybe hardware problem?

Hello, I need some help from you guys...
My Grand Quattro has a problem with camera (rear/front camera and flash), anything that uses this, crashes, and the camera app show "Camera Failed".
I erase data from camera app, gallery app, exclude my whole sdcard, wipe data, and reflashed stock ROMs. But all failed.
It is possible to be a hardware problem ? The camera works before, but suddenly stopped. If is a hardware problem, where specifically could be?
I will appreciate anyone that can help.
Sorry for my bad english...
anyone?

Camera failed on Samsung S4 mini

The phone was running stock Android 4.2.2 . One day clicking the built in camera app (v2.0) caused an error " Unfortunately the camera has stopped working". After googling the error this is what I tried , and did not work:
Restart.
Clear cache and data of the Camera app, Gallery and every other built in app with the camera icon.
Deleted all apps that used the camera (flashlight , scanner etc)
Went into recovery and wiped the cache partition.
Factory rest from within the phone.
Delete user data from recovery
Upgrade to Kitkat 4.4.2 - now the error has changed to "Camera failed".
Could this be a hardware problem?
Could this be a persist partition error? How can it be fixed on this phone?
Edit: Took the phone to Samaung lab (had one more month of warranty!) . They apparently re-flashed the OS and the problem is solved.

(Can't connect to camera) S3 i9301 with CM12

Some days ago I installed a Resurrection Remix Rom (I actually don't know which one, sorry. I just know that it's got Lollipop) and when i went to the camera it said: <<Can't connect to camera>>
I still had warranty, so I installed the stock rom (I checked the camera and it still didn't work) and I sent the phone to the company. IMPORTANT NOTE: In the warranty ticket it said <<SOFTWARE ERROR>>
The only camera I can use is the "selfies" one
When I received it, the error was fixed, so I tried to install another ROM, so I installed CM12. But... I got the error AGAIN and I haven't got warranty anymore
That's what I tried
-Install Reset Camera and Camera (CMFix) (Camera CMFix didn't open and I had Restart Camera Installed :v)
-Checking if an app is having troubles with the camera
-Rebooting in safe mode
-Holding down the volume/power/back
-Clearing Data and Cache of the camera
-Removing my SD card
-Renaming the DCIM folder
- youtube. com/ watch?v=Fa9qggQJ990 (I can't even access to that menu ._.)
-Find “Use NuPlayer” and uncheck it & restart
-Using other camera apps
-Disabling the Google Camera and using the default one
-EDIT: I installed the Stock Rom with odin and did a factory reset. I even did a "system reset" with odin. AND IT STILL DIDN'T WORK OMFG. Then I tried to update the camera firmware (youtube. com/ watch?v=Fa9qggQJ990) because I've got KK now, but the "Phone/CAM FW Ver Check" is disabled. I googled my camera Cam FW Ver and it's not old
Thank you, I'ts a really annoying error. My S3 is giving me too many troubles, I'm starting to hate it... But I can't buy a new one :crying:
OHMYGOD I CAN'T FIND A WAY TO FIX THAT ERROR HELP PLEASE
Mariecolo said:
Some days ago I installed a Resurrection Remix Rom (I actually don't know which one, sorry. I just know that it's got Lollipop) and when i went to the camera it said: <<Can't connect to camera>>
I still had warranty, so I installed the stock rom (I checked the camera and it still didn't work) and I sent the phone to the company. IMPORTANT NOTE: In the warranty ticket it said <<SOFTWARE ERROR>>
The only camera I can use is the "selfies" one
When I received it, the error was fixed, so I tried to install another ROM, so I installed CM12. But... I got the error AGAIN and I haven't got warranty anymore
That's what I tried
-Install Reset Camera and Camera (CMFix) (Camera CMFix didn't open and I had Restart Camera Installed :v)
-Checking if an app is having troubles with the camera
-Rebooting in safe mode
-Holding down the volume/power/back
-Clearing Data and Cache of the camera
-Removing my SD card
-Renaming the DCIM folder
- youtube. com/ watch?v=Fa9qggQJ990 (I can't even access to that menu ._.)
-Find “Use NuPlayer” and uncheck it & restart
-Using other camera apps
-Disabling the Google Camera and using the default one
-EDIT: I installed the Stock Rom with odin and did a factory reset. I even did a "system reset" with odin. AND IT STILL DIDN'T WORK OMFG. Then I tried to update the camera firmware (youtube. com/ watch?v=Fa9qggQJ990) because I've got KK now, but the "Phone/CAM FW Ver Check" is disabled. I googled my camera Cam FW Ver and it's not old
Thank you, I'ts a really annoying error. My S3 is giving me too many troubles, I'm starting to hate it... But I can't buy a new one :crying:
OHMYGOD I CAN'T FIND A WAY TO FIX THAT ERROR HELP PLEASE
Click to expand...
Click to collapse
Good day and welcome to XDA-Developers.
Your inquire has been reviewed.
Within moments your thread will be moved to the correct device location within the forum.
There your issues will be addressed by users whom know and understand your device.
Regards,
XDA Assist Team
I opened my S3 to check if it's a firmware error but it isn't :v

Can't set Lock Screen Password and Fingerprint

Hi,
I have a Pocophone F1 that recently upgraded to MIUI 12 (Global stock ROM). The password and fingerprint functioned normally until removing the password. Now when I try to set a password (pattern, PIN or password) a fingerprint is requested, the sensor doesn't recognize my finger and gets stuck on this screen.
I have already cleared all data from the applications below and restarted the device:
- POCO Laucher
- FingerprintExtensionService
- Fingerprint test
I also tried to create a Second Space, but the password is requested and I can't move forward.
In the Fingerprint input test option, the finger is not recognized. The sensor works normally, it vibrates (except on the screen to set the fingerprint) and I can take pictures with the sensor. I don't believe it's hardware because the problem started at the moment when I removed the password and fingerprint.
Any ideas what I can do to resolve without restoring the device?
Bro, Don't worry about your hardware.
It's a software bug and many MIUI 12 users are facing it.
I faced issue in setting up fingerprint in MIUI 12 too.
So I downgraded to MIUI 9 and it works like a charm.
You have two ways, either wait for next update to fix the issue or downgrade to lower MIUI version.
To set password etc boot in twrp and select advance, then file manager, in file manager select data, in data select system and in system delete lock setting files (3 files or may be one only).
Reboot and set your password.

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