Power & Volume Button Flex Cable
Samsung Galaxy A03 Core Power & Volume Button Flex Cable Replacement
- Fits
- Samsung Galaxy A03 Core
- Fixes
- Faulty side buttons
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
The power and volume buttons on the Galaxy A03 Core press on small switches mounted on a thin flex cable inside the side of the phone. Drops, dirt and moisture can crack the flex or wear out the switches, so the phone will not wake, turn off or change volume reliably.
This part replaces the flex cable and its switches. If the plastic button caps are missing or broken, they need to be replaced separately. Before ordering, restart the phone to rule out a software fault.
Compatibility
Specifications and compatibility
- Part
- Power & Volume Button Flex Cable
- Compatible with
- Samsung Galaxy A03 Core
- Model numbers
- SM-A032
- Does not fit
- Galaxy A03, Galaxy A03s, Galaxy A02 or any other model
- Fixes
- Power or volume buttons that do not respond, stick, or only work when pressed hard
- Does not fix
- Broken button caps, software faults, screen or charging problems
- Quality
- Brand new, OEM-quality power and volume button flex cable. Tested before dispatch.
- Brand
- Unbranded, compatible with Samsung Galaxy A03 Core
- In the box
- 1 × power and volume button flex cable. Check the photos for any tools 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 button does not wake or turn off the phone
- The volume keys do nothing or change volume on their own
- A button only works when pressed very hard
- The phone keeps taking screenshots or restarting by itself
How to check your model
Open Settings › About phone. The model name should read Galaxy A03 Core. The model number should start SM-A032.
The Galaxy A03 Core has a single rear camera. The Galaxy A03 (SM-A035) and Galaxy A03s (SM-A037) are different phones with different parts.
Professional installation
How a technician fits this part
- Power the phone off and remove the back cover carefully.
- Take out the screws and plates that cover the main board.
- Disconnect the battery before touching any other connector.
- Unclip and peel away the old button flex from the side of the frame.
- Fit the new flex in the same position so each switch lines up with its button.
- Reconnect the battery and test power, volume up and volume down before closing.
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 A03 Core?
Yes, if Settings › About phone shows Galaxy A03 Core with a model number starting SM-A032. It does not fit the Galaxy A03 or A03s.
Does it fit the Galaxy A03?
No. The Galaxy A03 (SM-A035) is a different phone with its own button flex. This part is for the A03 Core only.
Does it include the plastic button caps?
No. This part is the flex cable with its switches. If your outer button caps are missing or broken, those need replacing separately.
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 A03 Core, and every part is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The Galaxy A03 Core has to be opened, the battery disconnected safely, and the thin flex lined up exactly with the buttons.
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.