POCO F3 Camera Replacement Guide (Front | Rear) / DIY Xiaomi Mi 11X | 11i / Redmi K40

Hi everyone, welcome back to Geardo.
Today, we will show you how to replace the front and rear cameras on the Poco F3, also known as the Xiaomi Mi 11X and Redmi K40.

If your camera is blurry, not focusing, showing black screen, or not opening at all, replacing the camera modules can solve the issue. This guide is written in a beginner-friendly way, so follow each step carefully.

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Repair Overview

• Device Type: Smartphone
• Repair Type: Front & Rear Camera Replacement

Repair Difficulty: ★★★☆☆ (Moderate)

• Estimated Time: 30–45 minutes

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Reasons for Camera Replacement

• Camera not opening or crashing
• Blurry photos or focus issues
• Black screen in camera app
• Dust or damage inside lens/module
• Physical damage to camera

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Before You Begin

Compatibility and Model Numbers

• Redmi K40 Series ( Redmi K40 / K40 Pro / K40 Pro Plus) 
• Xiaomi 11x / 11i Series
• Poco F3 Series

Model Numbers : M2012K11AG, M2012K11AC, M2012K11C, M2012K11AI, M2012K11I

This guide is based on the Redmi K40, which shares identical design with the Poco F3 and Xiaomi Mi 11X / Xiaomi Mi 11i. These are rebranded regional models, but always watch for minor internal differences during the repair.

Tools Required

• Mobile phone heating pad or hairdryer/heat gun
• Plastic pry tool / card pry
• Suction cups
• Phillips #00/#000 screwdrivers
• Torx (T2/T3/T4) screwdrivers
• Flathead screwdriver
• Tweezers (for connectors)
• B7000 glue or double-sided adhesive (for back cover)
• Rubber bands or bonding clips to secure the back cover

How to Find Tools and Parts

• Heating pad – https://amzn.to/3H0tHzJ
• Portable Heat Gun – https://amzn.to/4mszih1
• Clamps https://amzn.to/3GYJT4w
• STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
• Glue | Adhesive https://amzn.to/46exVxe
• Compatible Parts –
  • Battery – https://amzn.to/4t0Aw6W
  • Screen – https://amzn.to/48hkKfR
  • Other Parts – https://amzn.to/4cF5E69
• Silicone Work Repair Mat https://amzn.to/45Emz5l

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 Protect Your Phone 

• Best Premium Case https://amzn.to/4cF5E69 
• Screen Protector https://amzn.to/423YP86

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Important Note (Compatibility)

This guide is based on the Redmi K40, which shares identical design with the Poco F3 and Xiaomi Mi 11X. These are rebranded regional models, but always check for minor internal differences.

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Step-by-Step Camera Replacement

Step 1: Power Off & Remove SIM Tray

Turn off the phone and remove the SIM tray.

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Step 2: Remove the Back Cover

• Heat the edges to soften adhesive (heating pad recommended)
• Use a suction cup to lift slightly
• Insert a plastic card/pry tool
• Cut through adhesive and remove the back cover carefully

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Step 3: Remove the Board Frame

• Undo 11 screws
• Disconnect the flash connector
• Remove the board frame

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Step 4: Disconnect Battery

• Unplug the battery connector (right-hand side)

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Step 5: Disconnect Main Flex

• Disconnect the main ribbon cable from the board

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Step 6: Remove Front Camera

• Apply slight heat if needed
• Gently lift and disconnect the front camera module
• Remove it carefully from the board

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Step 7: Remove Rear Cameras

• Disconnect the wide, ultra-wide, and macro cameras
• Gently lift each module

⚠️ The main (wide) camera may have adhesive—release it carefully before removing

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Step 8: Install New Rear Cameras

• Place the new macro, ultra-wide, and wide cameras
• Ensure connectors are properly aligned
• Apply adhesive if required (especially for the main camera)

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Step 9: Install New Front Camera

• Place and secure the front camera module
• Ensure proper alignment and connection

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Step 10: Reconnect Components

• Reconnect the main ribbon cable
• Reconnect sensor and battery connectors

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Step 11: Reassemble the Phone

• Place the board frame
• Secure with 11 screws

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Step 12: Seal the Back Cover

Before closing:

• Ensure enough adhesive is present
• Use B7000 glue or new adhesive if needed

Press firmly:

• Use clips or rubber bands
• Leave for proper bonding

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FAQs

Q1: How do I know if the camera is faulty?

If the camera shows a black screen, blurry images, or fails to focus, the module may be damaged.

Q2: Can I replace only one camera (e.g., main camera)?

Yes, you can replace individual camera modules if only one is faulty.

Q3: Is this repair difficult?

It’s a moderate repair and suitable for beginners with careful handling.

Q4: Do I need adhesive for camera modules?

Usually only the main camera may require adhesive; others are connector-based.

Q5: Will this fix camera app crashes?

If the issue is hardware-related, yes. Otherwise, check software issues first.

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Troubleshooting

Q1: Camera not detected after replacement

• Recheck connector alignment
• Ensure cables are properly seated

Q2: Camera blurry after replacement

• Remove protective film on lens
• Clean lens before sealing

Q3: Camera app still crashing

• Restart device
• Clear camera app cache
• Check software updates

Q4: Back cover not sealing properly

• Apply new adhesive or B7000 glue
• Use clips longer for proper bonding

Q5: Flash not working

Ensure proper alignment

Check flash connector when reinstalling frame

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