If your ASUS ROG Phone 9 camera won't open or crashes immediately, start with a simple restart. Press and hold the power button until the shutdown menu appears, then tap Restart. This clears any temporary glitches in the camera app or system services that might be causing the hang.
Give it about 30 seconds to fully reboot before trying the camera again. If the app still won't launch, don't worry, there are several other straightforward fixes to try.
Force Close and Reopen the Camera App
Sometimes the camera app just gets stuck. Swipe up from the bottom of your screen and hold to enter the recent apps view. Find the Camera app and swipe it all the way up to close it completely. Wait a moment, then tap the camera icon again to relaunch it fresh.
You can also force stop it from the settings for a more thorough reset. Go to Settings > Apps > Camera and tap Force Stop. This is a good next step if simply swiping it away didn't help.
Clear the Camera App's Cache and Data
Corrupted temporary files can prevent the camera from starting. Clearing the cache is safe and won't delete your photos. Go to Settings > Apps > Camera > Storage & cache and tap Clear Cache.
If the problem persists, you can try clearing the app data. This will reset the camera app to its default settings, so you'll lose any custom modes or preferences you've set. From the same Storage & cache menu, tap Clear Storage or Clear Data. After doing this, open the camera and see if it works.
Check for Software and App Updates
Outdated software can cause conflicts with the camera hardware. Open Settings > System > Software update and tap Check for update. Install any available system updates, as ASUS often releases patches for performance and camera stability.
Also, check the Google Play Store for updates to the Camera app itself. Open the Play Store, tap your profile icon, and go to Manage apps & device. Look for the ASUS Camera app in the updates available list and install it.
Boot Into Safe Mode
If a recently installed third-party app is interfering with the camera, Safe Mode will tell you. Press and hold the power button until the power menu appears, then press and hold the "Power off" option on your screen. You'll see a prompt to reboot to Safe Mode, tap OK to confirm.
In Safe Mode, all downloaded apps are disabled. Try opening the camera. If it works perfectly here, then a third-party app is the culprit. Restart your phone normally to exit Safe Mode, then start uninstalling recent apps one by one until the camera works again.
Check for Physical Obstructions and Sensor Issues
The ROG Phone 9 has multiple camera lenses and sensors. Make sure nothing is blocking them, including a poorly aligned phone case. Also, gently clean the lenses with a microfiber cloth, as heavy smudges can sometimes confuse the autofocus system during launch.
Check if other apps that use the camera work. Try opening Instagram or Snapchat and using their camera function. If those work but the main camera app doesn't, it points to a software issue with the ASUS Camera app specifically.
Reset App Preferences
This resets all your app permissions, notifications, and default apps without deleting any personal data. It can fix issues where the camera permission got corrupted. Go to Settings > System > Reset options > Reset app preferences and tap Reset.
Afterward, you'll need to grant camera permission again when you first open the app. This is a broader fix that can resolve conflicts between system settings and the camera.
Perform a Force Restart
For a deeper system reset, use the force restart method. This is different from a normal restart and can clear more stubborn system hangs. Press and hold the power button for 15 seconds or more, until you feel the phone vibrate and see the ROG logo appear as it reboots.
This is equivalent to pulling the battery on older phones and can resolve deeper software freezes that might be affecting the camera hardware controller.
Consider Heat-Related Throttling
The Snapdragon 8 Elite chip in the ROG Phone 9 generates significant heat during extended use. If you've been gaming for a long session, the system might be thermally throttling, which can occasionally affect non-essential functions like the camera.
Let the phone cool down for a few minutes. You can also enable the X Sense game mode and use its cooling optimization features, or activate bypass charging if you're plugged in, to help manage temperatures.
Check for Conflicting Gaming or Performance Modes
The ROG Phone's Armoury Crate and X Mode are designed to maximize performance for games. In rare cases, an aggressive performance profile could conflict with the camera app. Try disabling X Mode or switching to a balanced performance profile in Armoury Crate.
Also, if you have the AniMe Vision matrix display on the back enabled with a complex animation, try turning it off temporarily. While it's unlikely to cause a camera crash, disabling it removes one variable and saves a bit of battery and processing power.
