How to turn on the main camera on Android: from standard methods to hidden tricks

The main camera on an Android smartphone may suddenly stop opening - and this is one of the most annoying problems. You try to take a photo, but instead of the usual interface you see a black screen, the “Failed to connect to the camera” error, or the application simply closes. The reasons are varied: from banal software failures to hardware malfunctions. However, in 80% of cases, the problem is solved without visiting a service center - it is enough to know where the camera settings are “hidden” and how to activate them.

In this article we will analyze all possible ways to turn on the main camera - from the obvious (reboot, update the application) to the little-known (activation via ADB, resetting the camera settings). We will pay special attention to the nuances for different versions Android (from Android 10 to Android 15) and popular brands - Samsung, Xiaomi, Google Pixel and others. If your smartphone does not see the main camera, but the front one works, you are in the right place.

Before moving on to radical measures (like resetting to factory settings), check simple solutions. For example, many users Redmi and Realme face camera blocking due to Safe Modewhich disables third-party applications. And owners Samsung Galaxy often forget about the function Double press the power buttonthat instantly launches the camera. Below are detailed instructions for each case.

1. Standard methods for turning on the camera

Start with basic methods - they work in 60-70% of cases and do not require technical skills. Even if the camera previously worked properly, the failure could have occurred due to a system update, an application conflict, or a temporary glitch.

The most obvious way is to launch a standard application "Camera". On most smartphones, its icon is located on the home screen or in the application menu. If there is no icon, try:

• 🔍 Enter the request "Camera" in the application search (swipe down on the main screen).
• 📱 Press Double click on the power button (on Samsung, Xiaomi, OnePlus).
• 🖼️ Swipe on the icon "Bookmarks" at the bottom of the screen (on some firmware MIUI and ColorOS).

If the camera application opens but shows a black screen or an error, try:

1. Close the application via Recent tasks (swipe up) and start again.
2. Reboot the smartphone (hold the power button for 10 seconds).
3. Update the application "Camera" via Google Play (if it is not a system one).

Attention to detail: On some smartphones (for example, Sony Xperia), the camera may not start if there is a non-original tray in the slot SIM cards This is due to hardware protection against counterfeiting.

2. Checking permissions for the camera application

A common reason for a camera not working is disabled permissions. The system may block access to the camera after updating, resetting the settings or installing new software. To check. permissions:

1. Go to Settings → Applications → All applications.
2. Find the application "Camera" (or Google Cameraif you use GCam).
3. Select Permissions and make sure that the following are enabled:
   • 📸 Camera (main resolution).
   • 📁 Storage (for saving photos).
   • 📍 Location (if you need geotagging).

If permissions are already enabled, but the camera does not work, try:

• 🔄 Reset permissions for the application (in the same menu).
• 🚫 Delete cache (button Storage → Clear cache).
• 🔧 Disable battery optimization for the camera application (in settings battery).

On Android 12+ a function appeared Approximate locationthat can interfere with the camera's operation. If the pictures are not saved or the application gives an error E_ACCESS_DENIED, try:

1. Go to Settings → Privacy → Manager permissions.
2. Find "Camera" and install Exact location.

3. Activating the camera through gestures and quick commands

Manufacturers often add hidden gestures to quickly launch the camera. These functions can work even if the standard application is buggy. Here are the most common methods:

Brand	Gesture/command	Android version
Samsung	Double-click on the power button	One UI 3.0+
Xiaomi/Redmi	Double-click on the volume down button	MIUI 12+
Google Pixel	Double-click on the body ("Quick Tap" function)	Android 12+
OnePlus	Swipe down on the camera icon on the locked screen	OxygenOS 11+

To activate these features:

1. On Samsung: Settings → Additional features → Double press the power button.
2. On Xiaomi: Settings → Lock screen → Quick launch cameras.
3. On Google Pixel: Settings → System → Gestures → Quick Tap.

If gestures do not work, check whether the “Smart blocker” function is disabled in the security settings (relevant for MIUI and ColorOS).

4. Diagnosis of hardware problems

If software methods did not help, there may be a problem in hardware. Here's how to check:

• 🔦 Flashlight: if it does not turn on, most likely the camera module or cable is faulty.
• 📱 Falls/impacts: even a slight mechanical impact can dislodge lens.
• 💧 Moisture ingress: If the smartphone has been in contact with water, oxidation of the contacts will block the camera.

For diagnostics:

1. Start ##4636## (test menu) and select "Camera information".
2. If the test shows an error Camera failed, the problem is hardware.
3. Try connecting an external camera via USB-C (if supported). If it works, the main camera module is at fault.

What to do if the camera is physically damaged?

If the camera module is cracked or the lens is jammed, independent repair is not recommended - the module must be replaced at a service center. The cost of repair varies from 1,500 to 10,000 rubles, depending on the type. model.

On Samsung Galaxy S22/S23 i Google Pixel 7/8 a common problem is detachment of the camera cable due to overheating. If the camera was working, but suddenly stopped opening after intensive use (for example, shooting 4K video), this is a sure sign.

⚠️ Attention: if you disassembled the smartphone yourself, check whether the camera cable is connected correctly. It often comes off when replacing the battery. Xiaomi And POCO it often comes off when the battery is replaced.

5. Resetting camera settings and system tools

If the camera opens but does not work correctly (for example, blurred image, green screen or artifacts), resetting its settings will help. This method does not delete your photos, but returns the shooting parameters to the factory settings.

Instructions for most smartphones:

1. Open application "Camera".
2. Tap on ⚙️ "Settings" (usually in the upper right corner).
3. Find item Reset settings or Restore default values.
4. Confirm the action.

If this method does not help, use Android system tools:

• 🔄 Reset application settings: Settings → System → Reset → Reset application settings.
• 🧹 Clearing the system cache: Settings → Storage → Cache data (reboot required).
• 🛠️ Safe mode: hold the power button → Turn off the power → hold Turn off until a request to go to Safe Modeappears. If the camera works in this mode, third-party software is to blame.

A Android 14+ function has appeared (Repair mode), which disables personal data during diagnostics. To activate it: Repair Mode (Repair Mode), which disables personal data during diagnostics. To activate it:

1. Go to Settings → Device maintenance → Repair mode.
2. Follow the instructions on the screen (PIN code will be required).
3. After rebooting, check the camera in the test mode.

6. Advanced methods: ADB and third-party firmware

If the standard methods did not work and the camera still does not turn on, remain advanced methods. They require technical skills, but can bring the camera back to life without visiting a service center.

Method 1: Resetting permissions via ADB

Sometimes the system blocks access to the camera at the kernel level. To reset permissions:

1. Install ADB on your PC and connect your smartphone via USB (with USB Debugging enabled).
2. Open the command line and enter:

   adb shell pm grant android.permission.CAMERA
   adb shell pm clear com.android.camera

3. Reboot device.

Method 2: Installing alternative software for the camera

If the standard camera application does not work, try:

• 📷 Google Camera (GCam) - supports most smartphones (you need to download the version for your model).
• 🎥 Open Camera - open software with support for manual settings.
• 🔍 Camera MX —an alternative for older devices (Android 8.0+).

⚠️ Attention: on some smartphones (for example, Huawei without Google services), GCam may not start due to the lack of Google Play ServicesIn this case, only firmware with GMS support will help.

Method 3: Flashing the camera module

On Samsung i Xiaomi sometimes flashing a separate camera module via Odin or Fastboot. To do this:

1. Download the firmware for your model (for example, file AP_CAM_... for Samsung).
2. Flash only the camera module, without affecting the other sections.

🔹 Important: incorrect firmware can lead to hard brick (complete inoperability of the device). If you are not sure, contact the service.

7. When to contact the service center

If none of the methods helped, rather. In general, there is a problem hardware. Here are the signs when you should contact a specialist:

• 📵 The camera is not detected in Settings → Applications.
• 🔥 The smartphone overheats when trying to start the camera.
• 💥 Stripes or purple tint (a sign of matrix damage) appear on the screen.
• 🔌 Test menu (##4636##) shows error Camera hardware error.

The cost of repair depends on the problem:

Problem	Cost (₽)	Repair period
Replacement of the camera cable	1 500 — 3 000	1-2 hours
Replacement of the camera module	3 000 — 10 000	1-3 days
Repair after moisture exposure	2 000 — 15 000	2-5 days
Maternal diagnostics boards	1 000 — 5 000	1-7 days

⚠️ Attention: If the smartphone is under warranty, do not disassemble it yourself - this will void the warranty. Contact an authorized service center of the brand.

On Android 15 a function has appeared Self-Repair Mode (Self-diagnosis), which helps to identify hardware problems. To launch it:

1. Go to Settings → System → Self-diagnosis.
2. Select "Camera test" and follow the instructions.

FAQ: Frequently asked questions about turning on the camera on Android

🔹 Why does the camera write "Couldn't connect"?

This error occurs when another application blocks access to camera. Try:

1. Close all background applications (especially Snapchat, Instagram, Zoom).
2. Restart your smartphone.
3. Clear the application cache "Camera".

If this does not help, check if it is enabled whether Incognito mode or Private mode (on Samsung).

🔹 Is it possible to turn on the camera without the application?

Yes, there is several ways:

• Via Google Assistant: say “Okay, Google, take a photo.”
• Via Quick Settings: on some firmware there is a tile "Camera".
• Via Termux (for advanced users): enter the command am start -a android.media.action.IMAGE_CAPTURE.

🔹 Why does the main camera work, but the front camera does not?

This a typical problem for smartphones with cut out display (for example, Xiaomi Redmi Note 10 or Samsung Galaxy A52). Reasons:

• Dirty or damaged front module.
• App crash "Camera" (try GCam).
• Disable the front camera in the privacy settings (on Android 13+).

Check whether the lens is covered with a protective film or case.

🔹 How to turn on the camera if the screen does not work?

If the display is broken or does not respond to touches, but the smartphone turns on:

1. Connect OTG mouse and control the camera through it.
2. Use voice commands ("Okay, Google, open the camera")
3. Connect your smartphone to PC i control the camera via Scrcpy or Vysor.

If the screen is completely black, but the smartphone makes sounds, try taking a photo “blindly” (hold down the shutter button for 3 seconds).

🔹 Why does the camera only work in some applications?

This happens due to permission conflict. For example:

• Instagram or TikTok may block access to a standard camera.
• Some banking applications (for example SberBank Online) disable the camera for security reasons.

Solution:

1. Close all applications except the camera.
2. Check Settings → Accessibility → Screen overlay (disable overlays for third-party applications).