Now Reading: Charging Port Replacement Guide – Xiaomi 11i / 11i Hypercharge / Redmi Note 11 Pro 5G
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Charging Port Replacement Guide – Xiaomi 11i / 11i Hypercharge / Redmi Note 11 Pro 5G
Charging Port Replacement Guide – Xiaomi 11i / 11i Hypercharge / Redmi Note 11 Pro 5G
Charging problems such as slow charging, loose cable connections, or devices failing to detect chargers are among the most common smartphone hardware failures. In many cases, microphone problems during calls or voice recordings are also connected to a faulty charging port board because the bottom microphone is integrated into the same assembly.
In this repair guide, we will show you how to safely replace the charging port board on Xiaomi Redmi Note 11 Pro, also known as Xiaomi 11i Hypercharge smartphones. This repair can restore proper charging performance, stable USB connectivity, and resolve microphone-related issues caused by damaged or worn-out components.
Modern smartphones use sealed designs with strong adhesives and delicate flex cables. Following each step carefully ensures a safe repair without damaging nearby components.
These devices integrate charging circuitry, microphones, and antenna connections into a single bottom board assembly.
Repair Overview
Device Type: Smartphone
Repair Type: Charging Port Board Replacement (Charging + Microphone Repair)
Repair Difficulty
⭐⭐⭐⭐☆ (Moderate to Advanced Repair)
Estimated Repair Time: 40 — 60 Minutes
Reasons for Charging Port Board Replacement
You may need this repair if you notice:
- Phone not charging or charging intermittently.
- Loose USB cable connection.
- Slow charging or disconnecting charger.
- Microphone not working during calls or voice recordings.
- Computer not detecting USB connection.
- Water or dust damage near charging area.
Before You Begin
Compatibility and Model Numbers
- Xiaomi 11i
- Xiaomi 11i Hypercharge 5G
- Redmi Note 11 Pro+ 5G
Model Numbers : 21091116UI, MZB0A55IN, 21091116UG, 21091116UC, MZB0A5EIN
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 (Depends on the Region)
- 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
- Silicone Work Repair Mat https://amzn.to/45Emz5l
Xiaomi Redmi Note 11 Pro Charging Port Board Replacement — Step-by-Step Guide
Step 1 — Power Off the Device
Turn off the smartphone completely before starting the repair.
Remove the SIM tray if accessible.
Step 2 — Heat the Back Cover
The rear cover is sealed using adhesive.
Place the back cover side down on a heating pad.
Select the mobile phone heating option and allow the heating cycle to complete.
Alternatively, apply gentle heat using:
- Heat gun
- Hairdryer
Heat evenly around the edges.
Step 3 — Remove the Rear Cover
Attach a suction cup near the edge.
Lift gently to create an opening.
Insert a plastic pry card or pry tool.
Carefully slide around the edges to separate the adhesive.
Remove the rear cover slowly.
Step 4 — Remove the Board Frame
Undo the nine screws securing the board frame.
Lift and remove the frame carefully.
Step 5 — Disconnect Battery Connectors
Disconnect both battery connectors from the motherboard using a plastic pry tool.
This prevents electrical damage during the repair.
Step 6 — Remove the Speaker Cover
Locate and remove the seven screws securing the loudspeaker cover.
Lift and remove the speaker assembly.
Step 7 — Remove SIM Tray
Eject and remove the SIM tray from the device.
Step 8 — Disconnect Charging Board Connections
Disconnect the following components connected to the charging board:
- LCD display connector
- Two main ribbon flex cables
- Antenna head connector
Use plastic tools to avoid damage.
Step 9 — Remove the Charging Port Board
Carefully lift and remove the faulty charging port board from the phone body.
Check for adhesive or alignment clips before lifting.
Step 10 — Install the New Charging Port Board
Place the replacement charging board into position.
Ensure it sits flat and aligns properly with the charging port opening.
Step 11 — Secure SIM Tray
Reinstall and secure the SIM tray.
Make sure it fits properly through the frame opening.
Step 12 — Reconnect Connectors
Reconnect:
- Antenna head cable
- LCD display connector
- Two main ribbon flex connectors
Ensure each connector clicks firmly into place.
Step 13 — Reinstall Speaker Cover
Place the speaker cover back into position.
Secure it using the seven screws removed earlier.
Step 14 — Reconnect Battery Connectors
Reconnect both battery connectors securely.
Step 15 — Reinstall Board Frame
Place the board frame back into position.
Secure it using the nine screws.
Step 16 — Reattach Rear Cover
Check adhesive condition before closing.
If necessary:
- Apply B7000 glue, or
- Install new double-sided adhesive.
Press evenly.
Use bonding clips or rubber bands to hold pressure while adhesive cures.
Frequently Asked Questions (FAQ)
Q1. Can a charging port cause microphone problems?
Yes. The bottom microphone is integrated into the charging board assembly, so replacing it often fixes microphone issues.
Q2. Why is my charger only working at certain angles?
The USB port pins may be worn or damaged, requiring replacement.
Q3. Is heating required to remove the back cover?
Yes. Heating softens adhesive and reduces the risk of cracking the rear cover.
Q4. Will replacing the charging board erase data?
No. This repair does not affect personal data stored on the device.
Q5. Can beginners perform this repair?
Yes, but careful handling of flex cables and connectors is required.
Troubleshooting (Questions & Answers)
Q1. Phone still not charging after replacement?
Check ribbon cable connections and ensure the battery connectors are properly seated.
Q2. Microphone still not working?
Check microphone hole alignment and ensure the antenna and flex cables are fully connected.
Q3. SIM card not detected after repair?
Remove and reinstall the SIM tray carefully.
Q4. Phone not recognized by computer?
Reconnect USB flex cables and inspect connectors for debris.
Q5. Back cover lifting after repair?
Clean old adhesive residue and apply fresh glue or adhesive strips.
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