Charging Port Board
Samsung Galaxy M31 Charging Port Board Replacement
- Fits
- Samsung Galaxy M31
- Fixes
- Charging faults
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
On the Samsung Galaxy M31 the USB-C port is soldered to a small sub-board at the bottom of the phone, linked to the main board by a flex cable. A worn or damaged port causes slow charging, a cable that has to be held at an angle, or a phone that does not charge or connect to a computer at all.
Before replacing it, clean the port gently with a wooden or plastic pick and try a different cable and plug, as lint and faulty cables are common causes. If the fault stays, fitting a new board replaces the whole port in one go, with no soldering needed.
This board comes with its charging IC already fitted.
Compatibility
Specifications and compatibility
- Part
- Charging Port Board
- Compatible with
- Samsung Galaxy M31
- Model numbers
- SM-M315F
- Does not fit
- Galaxy M31s, M30s, M21 or any other model
- Fixes
- A loose, worn or damaged USB-C port, slow or intermittent charging, and no connection to a computer
- Does not fix
- A worn-out battery, a faulty charger or cable, or main board charging faults
- Quality
- Brand new, OEM-quality charging port board. Tested before dispatch.
- Brand
- Unbranded, compatible with Samsung Galaxy M31
- In the box
- 1 × charging port board. Check the photos for any extra items.
- 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 phone only charges when the cable is held at an angle
- Charging is very slow or keeps starting and stopping
- The cable feels loose or falls out of the port
- The phone is not detected when connected to a computer
How to check your model
Open Settings › About phone and check the model name reads Galaxy M31. The model number should start SM-M315. Compare your old part with the photos before fitting.
The Galaxy M31 has a 6.4-inch Super AMOLED screen, four rear cameras and a USB-C port.
Professional installation
How a technician fits this part
- Power the phone off and remove the SIM tray.
- Warm the back cover evenly to soften the adhesive, then lift it off carefully.
- Remove the screws and inner panel, then disconnect the battery before touching any other connector.
- Disconnect the flex cables from the charging board, remove its screws and lift it out.
- Fit the new board, reconnect the flex cables and battery, then test charging and data before closing.
- Refit the inner panel and screws, then seal the back cover 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 M31?
Yes, if Settings › About phone shows Galaxy M31 (model SM-M315F). It does not fit the Galaxy M31s, M30s, M21.
Does it fit the Galaxy M31s?
No. The Galaxy M31s (SM-M317) has a different internal layout. Only order this for the Galaxy M31.
How do I know the port is the problem?
Clean the port gently and try another cable and plug first. If the phone still charges slowly, cuts out or only works at an angle, the port board is the likely fault.
Is it made by Samsung?
No. It is a brand new, OEM-quality charging port board made to fit the Samsung Galaxy M31, and it is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The back cover is glued in place and needs gentle heat, and the battery must be disconnected before the charging board is removed.
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 over £5. You can also collect from our shop at 33 Moulton Street, Manchester M8 8FQ.
Prepared by the Supreme Phone Parts team, Manchester. Last updated September 2026.