Power and Volume Button Flex Cable
Samsung Galaxy A35 Power and Volume Button Flex Cable Replacement
- Fits
- Samsung Galaxy A35
- Fixes
- Dead side buttons
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
The Galaxy A35's power and volume keys sit on the right edge. Behind them is a flex cable with small contact switches that link the buttons to the main board. Drops, moisture and heavy use can wear these contacts or crack the cable.
This part is the internal flex cable only. It is a good fix when the buttons press in normally but nothing happens, or when the phone behaves as if a key is held down.
Compatibility
Specifications and compatibility
- Part
- Power and Volume Button Flex Cable
- Compatible with
- Samsung Galaxy A35
- Model numbers
- SM-A356B
- Does not fit
- Galaxy A34, A36, A55 or any other model
- Fixes
- Unresponsive, stuck or intermittent power and volume keys
- Does not fix
- Screen, battery, charging or motherboard faults, or physically broken outer button caps
- Quality
- Brand new, OEM-quality power and volume button flex cable. Tested before dispatch.
- Brand
- Unbranded, compatible with Samsung Galaxy A35
- In the box
- 1 × power and volume button flex cable. Tools and adhesive are not included unless shown in the photos.
- Colour
- Not applicable (internal part)
- 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 screen will not turn on or off with the side key
- Volume keys have no effect on sound level
- The power menu or Bixby opens without being pressed
- A key only works after several presses
How to check your model
Open Settings › About phone. The model number should read SM-A356B (Galaxy A35).
The A34 and A36 have their own flex cables and are not interchangeable with this one.
Professional installation
How a technician fits this part
- Turn the phone off and take out the SIM tray.
- Heat the back cover edges and open it carefully.
- Remove the internal cover screws and disconnect the battery.
- Unplug and peel away the old button flex from the frame.
- Position the new flex so the switches sit behind each key, then connect it.
- Reconnect the battery, test all three keys and reseal the back with new adhesive.
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 A35?
Yes, if Settings › About phone shows SM-A356B.
Does it fit the Galaxy A34 or A36?
No. Each of these models uses a different side key flex cable.
My buttons feel loose. Will this fix them?
This fixes the electrical contacts behind the keys. If the outer button caps are bent or missing, those need replacing as well.
Is it made by Samsung?
No. It is a brand new, OEM-quality flex cable made to fit the Galaxy A35, and it is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The back cover is glued, and the battery must be disconnected before the 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.
Prepared by the Supreme Phone Parts team, Manchester. Last updated September 2026.