For Samsung Galaxy S21 Plus 5G G996 Replacement Mainboard Flex The Repair Plus
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Discount applies at checkout on any mix of parts — ideal for repair shops.
Estimated delivery · Royal Mail Tracked 482–3 working days
- Order placedToday
- DispatchedSame day
- At your door2–3 days
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Phone parts are delicate. We recommend fitting by a qualified repair technician — damage caused during fitting is not a product fault. Need help choosing the right part? Call 07425 443625 or email info@therepairplus.com (Mon–Fri 10:00–18:00). Repair shop? Open a trade account.
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The Repair Plus main board connection flex cable for Samsung Galaxy S21 Plus 5G G996 replaces the ribbon that links the main board to the lower sub-board in the S21 Plus 5G (G996B). It is brand new, OEM standard, tested before dispatch and shipped the same day from Manchester when you order before 4pm, Monday to Friday.
Key features
- Made for the S21 Plus: correct size for the G996 chassis.
- Restores the board link: charging, microphone, loudspeaker and antenna signals.
- No soldering: press-fit connectors at both ends.
- Tested before dispatch: we check every cable before sending.
- Trade-friendly: a common part for Samsung repair shops.
Specifications
| Part | Main board to sub-board connection flex cable |
|---|---|
| Compatible model(s) | Samsung Galaxy S21 Plus 5G (G996B) |
| Condition | Brand new |
| Quality | OEM standard |
| Dispatch | Same day before 4pm, Monday to Friday, from Manchester, UK |
| Returns | 30 days |
Compatibility
Fits the Samsung Galaxy S21 Plus 5G G996B only. It does not fit the S21 (G991) or S21 Ultra (G998). Check your model number in Settings > About phone before ordering.
Is the main board flex the cause of your fault?
This flex links the main board of the Galaxy S21 Plus 5G to the lower sub-board, so a torn or pinched cable can cause several faults at once: charging not detected, a silent loudspeaker or microphone, and weak or lost signal. If more than one of these started after a drop or a previous repair, the flex is a likely suspect. If only charging has failed, check the charging port first, as a blocked or worn port is a more common cause.
To fit it, remove the back glass and mid-frame cover, disconnect the battery, then unclip both ends of the old flex. Press the new connectors on squarely until they click, and test charging, sound and signal before resealing.
Why buy from The Repair Plus
- Same-day dispatch when you order before 4pm, Monday to Friday.
- UK stock, shipped from Manchester.
- Every part tested before dispatch.
- 30-day returns.
- Trusted by DIY repairers and independent repair shops.
Frequently asked questions
Is this the same flex as the S21?
No. The S21 Plus G996 needs this longer flex.
My microphone stopped working after a drop. Could this flex be the cause?
Possibly. The microphone signal can pass through this link, so check the flex for tears.
Is fitting it difficult?
It is a moderate repair that needs the back glass and mid-frame cover removed.
Can I return it?
Yes, within 30 days.

