Sometimes we need to clean device cameras in order to get a clear picture. Cameras are often get dirty, which can reduce the quality of your photos.
Here’s a step by step guide to clean your Xiaomi’s Mi 4 cameras.
This will void your warranty. So do it at your own risk.
Step 1: Collect the tools. You have to collect one Philips screwdriver, a plunger, Microfiber cloth and a sim card tray key. You are all set.

Step 2: Remove the whole sim card tray.

Step 3: To remove back part use the plunger.

Step 4: You’ll see ten small screws after removing the back cover. Open the screw and keep then in a tray to avoid losing one.

Step 5: You’ll see three larger screws around the camera flash. It is not mandatory to open these three. Left where they are.

Step 6: After removing all screws it will look like the below picture:

Step 7: Our target is front facing camera which is located in top left corner (Red marked)

Step 8: Now open the camera with screwdriver or knife. See the picture below:

Step 8: Now clean the removed camera with the cotton bud or with Microfiber cloth. I recommend Microfiber cloth.

Step 9: After cleaning the lens set up the whole device in reverse order. You are all done.