Power and Volume Button Flex Cable
Samsung Galaxy S24 FE Power and Volume Button Flex Cable Replacement
- Fits
- Samsung Galaxy S24 FE
- Fixes
- Dead side keys
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
The side keys on the Galaxy S24 FE press against a thin flex cable inside the frame. The power (side) key and the volume keys share this one cable. If the phone was dropped on its edge, got wet or has had heavy use, the switches or the cable can fail, and the keys stop working or work only some of the time.
A new flex restores a firm click and a reliable response. Before you buy, restart the phone and check for software updates, as a stuck key can sometimes be a software fault. If a key still does nothing, or the phone keeps restarting or taking screenshots on its own, the flex is the likely cause.
Compatibility
Specifications and compatibility
- Part
- Power and Volume Button Flex Cable
- Compatible with
- Samsung Galaxy S24 FE
- Model numbers
- SM-S721B
- Does not fit
- Galaxy S24, Galaxy S23 FE or any other model
- Fixes
- Power or volume keys that do not respond, feel dead or trigger on their own
- Does not fix
- A bent frame, damaged key caps, a faulty motherboard or software faults
- Quality
- Brand new, OEM-quality power and volume button flex cable for the Samsung Galaxy S24 FE. Tested before dispatch.
- Brand
- Unbranded, compatible with Samsung Galaxy S24 FE
- In the box
- 1 × power and volume button flex cable for the Galaxy S24 FE. Check the photos for any tools or adhesive included.
- Colour
- As shown in the photos
- Installation
- Professional installation recommended
- Supplied by
- Supreme Phone Parts Ltd, Manchester, UK
Before you order
Is this the right part?
Signs it needs replacing
- The power key does nothing when pressed
- The volume keys do not change the volume
- The phone restarts, screenshots or changes volume on its own
- A key only works when pressed hard or at an angle
How to check your model
Open Settings › About phone. The model name should read Galaxy S24 FE and the model number should start SM-S721.
The Galaxy S24 FE has a 6.7-inch flat screen and three rear cameras.
Professional installation
How a technician fits this part
- Power the phone off, then warm the back glass and lift it with a suction cup and a thin pick.
- Disconnect the battery before touching any other connector.
- Remove the parts covering the side key area, then free the old flex from the frame.
- Fit the new flex in the same position and reconnect it.
- Test the power key and both volume keys before closing the phone.
- Apply new adhesive, refit the back glass and press evenly while it cures.
Check that the part matches the device before fitting it or removing any adhesive backing. Once a part has been fitted, it cannot be returned for a change of mind. Faulty parts are always covered.
FAQ
Frequently asked questions
Will this fit my Galaxy S24 FE?
Yes, if Settings › About phone shows Galaxy S24 FE with model number SM-S721B. It does not fit the Galaxy S24 or Galaxy S23 FE.
Does it fit the Galaxy S24?
No. The Galaxy S24 is a smaller phone with a different internal layout. This part is for the Galaxy S24 FE only.
Will this fix a key that is stuck down?
Only if the switch on the flex is faulty. If the metal key itself is bent or jammed in the frame, the key cap or frame also needs attention. A technician can check this when the phone is open.
Is it made by Samsung?
No. It is a brand new, OEM-quality power and volume button flex cable made to fit the Samsung Galaxy S24 FE, and every part is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The back glass has to be heated and lifted, new adhesive is needed, and the battery must be disconnected before any flex cable is touched.
How quickly will it arrive?
Orders placed before 4pm on a working day are dispatched the same day from Manchester by Royal Mail Tracked. Delivery is free on UK orders from £5. Returns are accepted within 30 days from receipt.
Prepared by the Supreme Phone Parts team, Manchester. Last updated September 2026.