Power & Volume Button Flex Cable
Xiaomi Mi 8 SE Power & Volume Button Flex Cable Replacement
- Fits
- Xiaomi Mi 8 SE
- Fixes
- Faulty side buttons
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
The power and volume buttons on the Xiaomi Mi 8 SE press against a thin flex cable inside the frame. Over time the small switches on this flex can wear out, or the cable can tear after a drop or an earlier repair. The result is a button that does nothing, needs a hard press, or acts as if it is held down.
This flex cable carries both the power and volume switches, so one part fixes all the side buttons. Fitting means opening the phone. If the outer button keys are bent or missing, those are a separate part.
Compatibility
Specifications and compatibility
- Part
- Power & Volume Button Flex Cable
- Compatible with
- Xiaomi Mi 8 SE
- Model numbers
- M1803E1A
- Does not fit
- Mi 8, Mi 8 Lite, Mi 8 Pro or any other model
- Fixes
- Unresponsive, stuck or unreliable power and volume buttons
- Does not fix
- Bent or missing outer button keys, software faults or motherboard faults
- Quality
- Brand new, OEM-quality power and volume button flex cable. Tested before dispatch.
- Brand
- Unbranded, compatible with Xiaomi Mi 8 SE
- In the box
- 1 × power and volume button flex cable. 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 power button does nothing when pressed
- The volume buttons stopped working
- A button only works with a very hard press
- The phone behaves as if a button is held down, for example restarting by itself
How to check your model
Open Settings › About phone. The device name should read Mi 8 SE. The model number (for example M1805E2A) is shown under All specs and on the phone's box. Compare your old part with the photos before fitting.
The Xiaomi Mi 8 SE has a 5.88-inch AMOLED screen and two vertical rear cameras. The standard Mi 8 is larger, with a 6.21-inch screen.
Professional installation
How a technician fits this part
- Power the phone off and warm the back cover edges to soften the adhesive.
- Lift the back cover carefully and disconnect the battery first.
- Remove the parts covering the button flex and unclip the old cable.
- Fit the new flex in the same position and reconnect it.
- Test the power and both volume buttons before closing the phone.
- Apply new adhesive, refit the back cover 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 Mi 8 SE?
Yes, if Settings › About phone shows Mi 8 SE (model M1805E2A).
Does it fit the standard Mi 8?
No. This flex is listed for the Mi 8 SE. The standard Mi 8 is a larger phone with a different part, so check Settings › About phone before ordering.
Does it fix the volume buttons too?
Yes. This one flex cable carries the power button and both volume button switches. The outer button keys are not included.
Is it made by Xiaomi?
No. It is a brand new, OEM-quality power and volume button flex cable made to fit the Xiaomi Mi 8 SE, and it is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The back cover is glued on, the battery must be disconnected safely, and the flex is thin and easy to tear.
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.