How to Fix No Signal / SIM Not Detected on Xiaomi After Update

A Xiaomi camera app crash on HyperOS 3 is usually caused by a bad app cache, broken app permissions, low storage, or a recent system update conflict. Fix camera Xiaomi issues by clearing Camera and Gallery data, checking permissions, updating system apps, and testing in Safe mode to rule out third-party interference.

Steps

Open Settings > Apps > Manage apps > Camera > Clear data and clear cache first. If the camera force close on HyperOS continues, clear all data for Camera and Gallery.
Open Settings > Apps > Permissions > Camera and allow Camera, Microphone, and Storage/Photos access where available. Missing permission often causes a Xiaomi camera app crash right after launch.
Check Settings > Storage and keep at least 3–5 GB free space. Very low storage can break photo processing, portrait mode, and video saving.
Update HyperOS system apps, Security, Gallery, and the full system version from Settings > About phone > HyperOS version. Camera modules on Xiaomi often depend on system component updates.
Restart the phone and test the camera in Safe mode. If the camera works in Safe mode, a third-party app such as a cleaner, overlay, recorder, or cloned app is likely causing the crash.

Common Issues and Fixes

Camera opens and closes instantly — likely cause: corrupted Camera cache or broken app data — fix: clear Camera and Gallery data, then restart the device.
Black screen in Camera app — likely cause: permission denial or another app holding the camera resource — fix: recheck permissions and close video call, scanner, or social apps running in the background.
Crash only in Portrait, 0.6x, or video mode — likely cause: HyperOS 3 update bug or damaged camera settings — fix: reset Camera app data and install pending system app updates.
Photos fail to save after capture — likely cause: low storage or SD card issue — fix: free internal storage and temporarily switch saving location to internal memory.
Front or rear camera only fails — likely cause: module-specific software bug or hardware fault — fix: test with CIT/diagnostic menu or stock camera after factory reset if software steps fail.

Option	Best For	Limitation
Clear cache	Minor camera lag or random crash	May not fix broken settings
Clear all app data	Repeated Xiaomi camera app crash	Resets camera preferences
Safe mode test	Finding app conflicts	Does not repair system bugs
System update	HyperOS 3 compatibility issues	Fix depends on update availability

Quick Tips

GCam ports, theme engines, and aggressive cleaner apps often trigger camera force close on HyperOS.
Work profile apps and dual apps can interfere with camera permission handling on some Xiaomi models.
A crash after lens switching may point to a device-specific HyperOS bug, not immediate hardware failure.
Factory reset should be the last software step after backup, because Camera and Gallery data reset will not always fix deeper system conflicts.

Why does the Xiaomi camera app crash after a HyperOS update?

A HyperOS update can leave old Camera data incompatible with new system components. Clearing app data and updating Security and Gallery usually resolves the mismatch.

Can a Xiaomi camera app crash mean hardware damage?

A hardware issue is possible if one lens never works in any app, including diagnostics. Random crashes across modes are more often caused by software, storage, or permissions.

💡Protip:

Before factory reset or repair, a phone management tool such as Dr.Fone can help back up photos and export media files, especially if Camera opens only briefly or storage access is unstable.

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