A black screen, an error message “Camera does not work” or endless loading when launching an application indicate a malfunction of the Android module, which can be caused by either a software conflict or a physical hardware failure.
In most cases, this is due to an application conflict, a full cache, or failed system update. However, you should not immediately take the device to a service center. There are a number of actions you can take yourself to return functionality to the module. In this guide, we will analyze in detail the main causes of failures and offer step-by-step methods for eliminating them, from simple reboots to complex manipulations with access rights.
Software crashes and freezing of the Camera application
The most common reason why the camera does not open on Android is a banal failure in the application itself. The mobile operating system, despite its reliability, is not immune to code errors or RAM conflicts. When you frequently switch between tasks, the camera process may become stuck in the background, blocking it from launching again. In this case, the system cannot initialize the device drivers and you get a black screen.
To solve this problem, you need to force stop the service and clear its temporary data. This won't delete your photos, but it will reset the app itself to factory settings. Go to Settings → Applications → Camera and find the “Memory” item. Here you need to press the button Clear cache. If this does not help, use the option Clear data.
⚠️ Attention: Clearing application data will reset all your custom settings inside the camera (for example, selected aspect ratio, enabled grids or HDR modes). You will have to configure them again after startup.
Sometimes the problem lies deeper - in the system process responsible for media files. If a standard reset doesn't help, try rebooting your device in Safe Mode. This will determine if a third-party application is at fault. To do this, hold down the power button, and then long-press the “Turn off” item on the screen until the prompt to switch to safe mode appears.
If the camera works properly in safe mode, then the problem is caused by one of the recently installed applications. Try to remember what you downloaded before the error appeared.
Conflicts with other applications and access rights
The camera is a resource that can only be used by one application at a time. If you have Skype, Zoom, Telegram or any other instant messenger open that uses video communication, the system camera may be blocked. Android does not allow two apps to capture the stream from the matrix at the same time. In new versions of the system (Android 12 and higher), a green indicator appears in the corner of the screen, signaling that the camera is active.
It is also worth checking the permissions. In modern MIUI, OneUI or ColorOS shells, privacy settings have become very strict. Perhaps you accidentally blocked access to the camera for a system application or updated the rights after the next security patch. Go to Settings → Privacy → Permission manager → Camera and make sure that the switch opposite the main application is turned on.
- 📱 Close all applications running in the background through the multitasking menu.
- 🔒 Check whether the “Privacy” or “Data Protection” mode is turned on, which blocks access to the hardware.
- 🔄 Remove recently installed applications that may request access to the camera (flashlights, QR scanners, editors).
Particular attention should be paid to third-party ones launchers or applications to save battery. They can aggressively “kill” system processes, considering the camera service an unnecessary load. If you use such utilities, add the camera to the exception list or temporarily disable power optimization for it.
Hardware malfunctions and physical damage
If software methods do not bring results, there is a high probability of physical breakdown. The camera module is a complex device that is sensitive to shock, moisture and temperature changes. Even if the phone appears intact, the internal connection of the cable to the motherboard may have been damaged after a fall. In this case, the system simply “does not see” the equipment and displays a connection error.
A common cause is oxidation of the contacts. Ingress of moisture (even in small quantities, for example, in the bathroom) leads to corrosion of the connectors. Over time, this causes signal loss. Also, the problem may lie in the lens itself: if the glass is cracked or dust gets inside, autofocus may not work correctly, creating the illusion of a camera not working due to constant defocus.
| Symptom | Probable cause | Solution |
|---|---|---|
| Black screen at startup | Cable failure or driver failure | Reconnecting the cable in the service |
| Message “Could not connect to the camera” | Resource occupied by another application | Reboot phone |
| Blurred image, no focus | Dirty lens or motor failure | Cleaning the glass or replacing the module |
| Purple stripes in the photo | Damage to the matrix (sensor) | Complete camera replacement |
You can diagnose a hardware problem using the engineering menu. The code #0# or ##4636##works on many devices. In the menu that appears, select camera test. If there is also a black screen or an error, then the problem is definitely hardware. A soft reset is powerless in this case.
Problems after updating the Android system
Updating the firmware is always a lottery. Developers strive to improve functionality, but sometimes new versions contain bugs that break compatibility with older hardware drivers. If the camera stops working immediately after the update Android, most likely the conflict lies in incorrectly installed system files or the update cache.
In such situations, clearing the cache partition (Wipe Cache Partition) through Recovery mode helps. This will not delete your personal data (photos, contacts), but will clear temporary system files that may have been damaged during the update. To enter Recovery, you usually need to turn off the phone and hold down the combination of buttons Volume Up + Power (the combination may differ depending on the brand).
⚠️ Attention: In Recovery mode, control is carried out with the volume buttons, and selection is done with the power button. Be careful not to select the “Wipe Data/Factory Reset” option, otherwise you will delete all data from the phone.
Another option is to roll back to a previous version of the software, if the manufacturer provides such an option. However, this is a complex procedure that requires a computer and the original firmware file. If you are not confident in your abilities, it is better to wait for the next security patch, which often corrects critical errors of the first release.
Why does the camera blur the photo after an update?
Sometimes new image processing algorithms (ISP) do not work correctly with old sensors. In the camera settings, try turning off “Image enhancement” or “AI scripts.”
Lack of memory and full storage
A trivial but common cause of failures is the lack of free space on the internal drive. To operate the camera, the system requires buffer memory to process the image before saving it. If the storage is full to capacity (less than 100 MB left), the application will not be able to create a temporary file and will simply crash or freeze on a black screen.
Check the memory status in the Settings → Storagesection. If the scale is filled with red, you need to delete unnecessary files. Pay special attention to the folder DCIM and cache of instant messengers (Telegram, WhatsApp), which can occupy tens of gigabytes. Also check the trash can in the gallery - deleted photos are often stored there for another 30 days, continuing to take up space.
☑️ Clearing space for the camera
In addition, if you use an SD memory card to save photos, it may be damaged or have a low writing speed. Try temporarily changing your camera settings by switching storage to the phone's internal memory. If the problem disappears, then your SD card needs to be formatted or replaced.
Resetting settings to factory settings
When none of the above methods helped, a radical but effective remedy remains - a complete reset (Hard Reset). This will return the phone to its “out of the box” state, removing all software errors, viruses and settings conflicts. Before this procedure, it is critical to make a backup copy of all data, as they will be completely destroyed.
You can perform a reset through the settings menu: Settings → System → Reset → Delete all data. After rebooting, the phone will need to be configured again. If the camera still does not work after this, the probability of a hardware failure is 99%. Further independent actions can only aggravate the situation.
⚠️ Attention: Make sure you remember the password for your Google account. Once reset, the phone will ask you to confirm ownership (FRP protection). Without a password, you will not be able to activate the device.
Sometimes the problem lies in specific developer settings. If you have previously enabled USB debugging or changed animation settings, try disabling Developer Mode completely. Go to Settings → For developers and turn off the main switch at the top of the screen.
A full reset eliminates 90% of camera software errors, but requires a mandatory data backup before starting the procedure.
Often asked questions (FAQ)
Why does the camera work in third-party applications (Instagram, WhatsApp), but does not work in the native application?
This indicates a problem with the specific “Camera” application, and not with the hardware. Try updating the application via Google Play, clearing its data or uninstalling updates, returning to the factory version.
The black screen appears only when using the front camera, the main one works. What to do?
Most likely, the cable of the front module is damaged or the sensor itself has failed. A soft reset is unlikely to help here; diagnostics are required at a service center.
Can a virus block the camera on Android?
Yes, malware can intercept control of the camera or block it from displaying advertising. Scan your device with an antivirus (for example, Dr.Web or Kaspersky) and remove suspicious applications.
The camera displays the “Not enough memory” error, although there is space. What is the reason?
The file system may be damaged or the SD memory card is working in read-only mode. Try formatting the memory card or switching to save photos to internal storage.