For Samsung Galaxy S21 SM-G991B Power Button Flex Cable
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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 power button flex cable for Samsung Galaxy S21 SM-G991B is the side-key assembly carrying the power button and volume up/down switches. Fit it when your S21's side buttons feel loose, stick or stop responding. Brand new, OEM standard, tested before dispatch and shipped the same day from Manchester when you order before 4pm, Monday to Friday.
Key features
- Complete side-key module: power button plus volume up and down on one flex.
- Exact fit for the SM-G991B: correct cable length and connector placement.
- Restores tactile control: wake, lock and volume respond properly again.
- Tested before dispatch: each assembly is checked before it ships.
- For experienced DIY and trade: suits repairers comfortable opening a Galaxy S21.
Specifications
| Part | Power button and volume flex cable assembly |
|---|---|
| Compatible model(s) | Samsung Galaxy S21 (SM-G991B) |
| 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 SM-G991B only. It does not fit the S21 Plus (G996B) or S21 Ultra (G998B). Check your model number in Settings > About phone before ordering.
How to fit a side button flex on the Galaxy S21
- Power the phone off and soften the back glass adhesive with gentle heat, then lift the back glass away.
- Remove the screws holding the mid-frame cover and wireless charging coil, and disconnect the battery first.
- Unclip the old button flex from the board, ease it out of the frame and fit the new one in the same position.
- Reconnect everything, test each button before sealing, then fit fresh back glass adhesive.
You will need a heat source, a suction cup, opening picks, a small Phillips screwdriver and new back cover adhesive.
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
Does this include the volume buttons?
Yes. It is the full side-key assembly with the power button and volume up and down switches.
Will it fit the S21 Plus?
No. It is listed for the Galaxy S21 SM-G991B only.
Do I need to re-set anything after fitting?
No. Once connected, the buttons work straight away.
How quickly will it ship?
Orders before 4pm, Monday to Friday, go out the same day from Manchester.
