S22 PLUS 5G ORIGINAL CHARGING CARD

🔌 What Is the Charging Card in the Galaxy S22 Plus?

The charging card (also known as the charging sub-board, USB board, or charging PCB) is a small printed circuit board located at the bottom of the phone.
It connects to the main motherboard via a flex cable and contains the USB Type-C port, microphone, and several other essential components.

This sub-board handles power input, data communication, and peripheral connections, making it a critical part of the phone’s hardware.

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⚙️ Main Functions of the S22 Plus Charging Card

1. 🔋 Power Input & Charging Management

   • Receives electrical power from the USB Type-C port.

   • Passes power through protective circuits to the Power Management IC (PMIC) on the mainboard.

   • Supports Super-Fast Charging (25 W) using USB Power Delivery (PD 3.0) protocol.

   • Ensures safe charging by regulating current and preventing over-voltage.

2. 💾 Data Transfer

   • Handles data communication between the phone and a computer (USB 3.2 Gen 1 supported).

   • Responsible for file transfer, software flashing, and device recognition on PCs.

3. 🎤 Microphone (Bottom Mic)

   • Contains the main bottom microphone used for phone calls and video recording.

   • If the mic fails, the other person can’t hear you properly during calls.

4. 📶 Antenna & Network Connections

   • Provides connection points for the lower antenna modules or signal lines.

   • Ensures proper 5G and LTE reception in coordination with the mainboard.

5. 🔄 USB On-The-Go (OTG) Functionality

   • Allows the phone to act as a host device — connecting USB flash drives, keyboards, etc.

   • Controlled through the charging board’s USB port.

6. 📳 Vibrator & Speaker Connectivity (varies by model)

   • The board may have contact points or connectors for the vibration motor and bottom loudspeaker.

7. 🧭 Signal Routing & Grounding

   • Acts as an electrical bridge between the port and motherboard, maintaining signal integrity and stable grounding.

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⚠️ Common Reasons for Charging Card Failure or Replacement

1. ⚡ Physical Damage to Charging Port

   • Bent, cracked, or broken USB-C pins caused by frequent plugging/unplugging or using tight cables.

   • Loose port (wobbles when a cable is inserted).

2. 💧 Water or Moisture Damage

   • Corrosion or oxidation on the charging pins.

   • Triggers the “Moisture Detected” warning, preventing charging even when the phone is dry.

3. 🔥 Overvoltage or Short Circuit

   • Using a non-certified charger or power surge can damage internal protection circuits or charging IC.

4. 🌫 Dust or Lint Accumulation

   • Dust buildup inside the port blocks proper contact with the charging cable.

   • Leads to slow charging or no charging.

5. 🔇 Microphone Failure

   • If the mic on the sub-board stops working, you’ll experience poor or no audio during calls and video recordings.

6. 🧩 Broken Connector or Flex Cable

   • The flex cable that connects the sub-board to the motherboard can tear or come loose.

7. 🔋 No Charging / Slow Charging / Cable Not Recognized

   • Damaged power lines or IC components cause the phone to charge inconsistently or not at all.

   • PC may not detect the device via USB.

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🔧 When to Replace the Charging Card

You should replace the Galaxy S22 Plus charging card if you experience:

• No charging even with an original cable and adapter.

• The USB-C port feels loose or wobbly.

• Phone charges intermittently or only at certain angles.

• PC does not recognize the phone when connected.

• The bottom microphone stops working.

• Persistent “moisture detected” message even after cleaning/drying.

• Overheating during charging or abnormal charging behavior.

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💰 Replacement Information

• Part Name: Samsung Galaxy S22 Plus Charging Sub-Board / USB PCB

• Includes: USB-C port, mic, flex connector, antenna/speaker contacts (varies by version)

• Replacement Time: Around 30–60 minutes by a professional technician

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🧠 Maintenance & Prevention Tips

• Use only Samsung-approved or USB-PD certified chargers and cables.

• Keep the port clean — use a soft brush or compressed air.

• Avoid charging the phone in wet or humid environments.

• Do not force the cable into the port.

• Disconnect immediately if you see a moisture warning and let the port dry.

• Store the phone in a dry, dust-free place.