If your mobile camera is not working or it is showing blurry images,  here is the answer:

What  Causes It: 

1. Smudged camera or dirty camera lens:

•  Photos can become blurry if the lens is covered in fingerprints, dust, or dirt.

2. Software Error:

•  Due to bugs or memory issues, the camera app occasionally freezes or   crashes. 

3. Lighting Conditions:

•  If  there isn't enough light, photos may look blurry.

4. Unsteady Hands: 

• Moving while taking a picture in low light can blur the image. 

5. Software for your phone or outdated camera app:

• Older versions may not function properly or may have bugs. 

6. Hardware Problems:

• If the camera is physically damaged, it may not focus or open at all. 

What you can do:

• Clean the lens: You can clean the lens by wiping it gently with a microfiber or soft cloth.

• Restart the Phone: Software issues can be temporarily fixed by restarting the phone. 

• Force stop the Camera App: By opening it again after going to Settings > Apps > Camera > Force Stop. 

• Clear Camera App Cache: ( found in App Settings), Aids in resolving App bugs.

• Update Software: Make sure your phone and camera app are updated.

• Try a camera app from a third party: if it works, the default app might be the issue.

•  Checking any Physical Damage: If the camera won't open or the lens is scratched, take it to service center to check for physical damage.