Samsung Galaxy S21 5G Charging Port Replacement
Model SM-G991B — USB-C — 25W Super Fast Charging
Genuine OEM flex (dock connector assembly) pulled from a working SM-G991B. Tested for charging and data. Professional installation recommended.
Brisbane Technical Hub
Stocked at 152 Woogaroo Street, Forest Lake QLD 4078.
Call 0480 039 913 for compatibility questions.
Authenticity Guaranteed
Genuine OEM part pulled from a confirmed SM-G991B. Not a generic or aftermarket copy.
Reliable Dispatch
Ships within 2-4 business days. Packed in anti-static packaging for safe transit.
What Is Pull-A Grade?
This part was removed from a working Samsung Galaxy S21 5G. It was not taken from a damaged device.
Pull-A is the highest quality grade for used parts. It is genuine OEM, not a brand-new part.
Always test the port before completing installation. This part does not carry a manufacturer warranty.
Always test this port before full installation. Connect it and verify charging works. Then complete the repair. This saves time if a fault is found.
Compatible Device
Samsung Galaxy S21 5G
Model Number: SM-G991B / SM-G991B/DS (Dual SIM)
Find your model number under Settings → About Phone → Model Number. Confirm SM-G991B before ordering.
Does NOT Fit Galaxy S21+
SM-G996B uses a different port assembly.
Does NOT Fit Galaxy S21 Ultra
SM-G998B uses a different port assembly.
Does NOT Fit Galaxy S21 FE
SM-G990B uses a different port assembly.
What This Port Fixes
Phone Not Charging
Cable connects but no charging icon appears.
Loose or Intermittent Port
Cable must be held at an angle to charge.
No Data Transfer
PC does not detect the phone via USB-C cable.
Lost Super Fast Charging
Dropped from 25W to slow 5W trickle charging.
Port Debris or Damage
Bent pins or corrosion that cannot be cleared.
Microphone Not Working
The S21 5G microphone is on the charging port flex.
Pull-A Grade Features
25W Super Fast Charging
USB PD 3.0 with PPS. Tested before dispatch.
USB 2.0 Data Transfer
480 Mbps — standard for SM-G991B international.
Exact Fit — SM-G991B
Pulled directly from a confirmed SM-G991B device.
Microphone Included
Bottom microphone is part of this flex assembly.
Pre-Tested
Charging and data verified. Only passing units ship.
Anti-Static Packed
Ships in anti-static bag to protect the flex in transit.
Technical Specifications
Installation
Difficulty: High
The Galaxy S21 5G back cover uses strong adhesive. A heat gun and precision tools are needed.
Flex Assembly Swap
This is a full daughterboard assembly replacement. No soldering is needed for this repair method.
Tools Required
Heat gun, suction cup, plastic pry tools, and a Philips screwdriver. ESD mat recommended.
Test Before You Close
Connect and verify charging before resealing. This saves having to reopen the device.
Brisbane Help Available
Visit 152 Woogaroo Street, Forest Lake or call 0480 039 913 for local repair advice.
Shipping & Dispatch
Ships from 152 Woogaroo Street, Forest Lake QLD 4078.
Dispatched within 2-4 business days. Tracked Australia-wide via Australia Post.
Call 0480 039 913 for stock or delivery questions.
JPC Quality Tested
Every Pull-A unit is tested for charging and data before dispatch.
Non-functioning units are not sent out.
Contact 0480 039 913 or visit Forest Lake with any concerns.
Frequently Asked Questions
Which Samsung model does this charging port fit?+
This fits the Samsung Galaxy S21 5G (SM-G991B) only.
It also fits the Dual SIM variant (SM-G991B/DS).
It does not fit the S21+, S21 Ultra, or S21 FE. Check your model under Settings → About Phone.
What is Pull-A grade?+
Pull-A means the part was removed from a working donor Galaxy S21 5G. It is genuine OEM, not aftermarket.
Grade A means no significant wear. The port looks new and tests fully functional.
It is not brand new. It does not carry a manufacturer warranty.
Does this port replacement require soldering?+
No. This is a complete flex assembly (daughterboard). It swaps out as a full unit.
No soldering is needed. The connectors clip into the motherboard.
Professional skill is still needed. The S21 back cover uses strong adhesive and requires care.
Does this restore 25W Super Fast Charging?+
Yes. This port supports USB PD 3.0 with PPS. That is how the S21 achieves 25W charging.
After replacement, 25W speeds return with a compatible Samsung charger.
You also need an original Samsung 25W USB-C charger. Third-party chargers may deliver less power.
What data transfer speed does the SM-G991B support?+
The SM-G991B (international model) supports USB 2.0 data transfer at up to 480 Mbps.
This is a Samsung design choice for the base S21 model. USB 3.2 only applies to the US variant (SM-G991U).
This port restores full USB 2.0 data sync with Mac and PC.
Does this also fix the bottom microphone?+
Yes. The bottom microphone is mounted on this charging port flex assembly.
Replacing this part also restores microphone function if it was damaged along with the port.
Always test the microphone after installation to confirm it is working.
How quickly will this ship to me in Australia?+
Orders dispatch from our Brisbane store within 2-4 business days.
We ship Australia-wide via Australia Post with tracking on every order.
Call 0480 039 913 to confirm stock before ordering.
JPC Mobile — Brisbane Samsung Parts Specialists
152 Woogaroo Street, Forest Lake QLD 4078
0480 039 913
Mon–Sat: 9am–5pm • Australia-wide shipping available
Ships within 2-4 business days from Brisbane.
Payment Options
We offer multiple convenient payment options for your repairs and accessories purchases. Pay with cash, debit/credit card, or interest-free Buy Now Pay Later options.
Shipping & Processing Information
Processing Time
All orders require 2-4 business days for processing, regardless of shipping method.
This includes order verification, picking, packing and preparation for dispatch.
You will receive tracking information for all shipped orders and notification when pickup orders are ready for collection.
Shipping Methods
Standard: 3-7 business days in transit after processing
Express: 1-2 business days in transit after processing
Express shipping only affects delivery time once dispatched, not processing time.
Express shipping does not expedite the 2-4 business day processing time.