Now Reading: POCO F3 Screen Replacement- Redmi K40 / Xiaomi Mi 11X/11i Repair Guide
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POCO F3 Screen Replacement- Redmi K40 / Xiaomi Mi 11X/11i Repair Guide
POCO F3 Screen Replacement- Redmi K40 / Xiaomi Mi 11X/11i Repair Guide
Hi everyone, welcome back to Geardo.
Today, we’ll show you how to replace the LCD/AMOLED screen display assembly on the Poco F3, also known as the Xiaomi Mi 11X and Redmi K40.
If your screen is cracked, unresponsive, flickering, or showing display issues, this guide will help you replace it step by step. This is a beginner-friendly guide, but it’s a longer repair since many internal components need to be transferred.
Repair Overview
- Device Type: Smartphone
- Repair Type: Screen / Display Replacement (With Frame Recommended)
Repair Difficulty: ★★★★☆ (Advanced)
- Estimated Time: 60–90 minutes
Reasons for Screen Replacement
- Cracked or shattered screen
- Touch not responding properly
- Display flickering or dead pixels
- Screen not turning on
- Burn-in or discoloration
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
Protect Your Phone
- Best Premium Case https://amzn.to/4cF5E69
- Screen Protector https://amzn.to/423YP86
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 watch for minor internal differences.
Step-by-Step Screen Replacement
Step 1: Power Off & Remove SIM Tray
Turn off the phone and remove the SIM tray.
Step 2: Remove the Back Cover
- Heat the edges to soften adhesive (heating pad recommended)
- Use a suction cup and pry tool to lift
- Cut through adhesive and remove the back cover carefully
Step 3: Remove the Board Frame
- Remove 11 screws
- Disconnect flash connector
- Lift and remove the frame
Step 4: Disconnect Battery
- Unplug battery connector (right side)
Step 5: Remove Logic Board
- Disconnect:
- Two antenna cables
- Main flex cable
- SIM reader flex
- Power/fingerprint flex
- Carefully lift the board (move front camera slightly if needed)
Step 6: Remove Top Components
- Remove earpiece (heat + screws)
- Remove sensor flex and bracket (apply gentle heat)
Step 7: Remove Battery
- Pull adhesive strips from sides
- Gently lift the battery
Step 8: Remove Side Button Components
- Move battery tape aside
- Peel power/fingerprint flex cable
- Heat and remove volume button flex
- Remove rubber bracket
- Remove fingerprint bracket and push button out
- Remove volume button bracket and flex
Step 9: Remove Bottom Components
- Remove speaker cover (7 screws)
- Disconnect and remove main flex
- Remove charging port (disconnect antenna + connector)
- Remove SIM tray
Step 10: Disconnect Display & Other Parts
- Disconnect display (LCD/AMOLED) connector
- Remove vibration motor (apply heat)
- Remove SIM reader cable (heat + gentle pry)
Now only the screen frame assembly remains.
Screen Replacement Options (Important)
There are two types of replacement screens:
- Without Frame
- Cheaper
- Requires separating screen from frame (difficult)
- With Frame (Recommended ✅)
- Easier installation
- Includes pre-installed structure
- Saves time and reduces risk
👉 Best option: Screen with frame & buttons pre-installed
Reassembly (Installing New Screen)
Transfer all components to the new frame:
Step 11: Install Internal Components
- Install sensor flex and bracket
- Install earpiece (secure with screws)
- Install volume flex
- Insert fingerprint/power button
- Secure fingerprint bracket
- Install rubber button bracket
Step 12: Install Logic Board
- Place logic board
- Reconnect all cables
- Ensure camera and connectors are aligned properly
Step 13: Install Remaining Components
- Install vibration motor
- Connect SIM reader flex
- Insert SIM tray
- Place battery and secure adhesive
- Install charging port and antenna
- Install main flex cable
- Install speaker (7 screws)
- Reconnect antenna cables
Step 14: Final Connections
- Reconnect sensor and battery connectors
- Install board frame (11 screws)
Step 15: Test Before Sealing
Power on the device and check:
- Display
- Touch response
- Buttons
- Charging
Step 16: Seal the Back Cover
- Apply adhesive (B7000 or new adhesive)
- Press back cover
- Use clips or rubber bands
- Leave to bond properly
FAQs
Q1: Should I choose a screen with frame or without?
A screen with frame is highly recommended—it’s easier, faster, and safer.
Q2: Is this repair beginner-friendly?
It’s an advanced repair, but beginners can do it with patience and careful handling.
Q3: Will replacing the screen fix touch issues?
Yes, if the issue is due to a damaged display.
Q4: Can I reuse old adhesive?
No, always use fresh adhesive for proper sealing.
Q5: Do I need to remove all components?
Yes, for a full frame replacement, all internal parts must be transferred.
Troubleshooting
Q1: Screen not turning on
- Check display connector
- Ensure battery is connected
- Try charging the device
Q2: Touch not working
- Reconnect display cable
- Ensure no cable damage
Q3: No signal or network issue
- Check antenna connections
- Ensure SIM reader flex is connected
Q4: Buttons not working
- Verify flex cables are aligned and secured
- Check button brackets
Q5: Back cover not sealing
- Use new adhesive or B7000 glue
- Apply pressure with clips
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