LCD Flex Cable
Xiaomi Mi Mix 3 LCD Flex Cable Replacement
- Fits
- Xiaomi Mi Mix 3
- Fixes
- Display signal faults
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
In the Xiaomi Mi Mix 3, the display signal passes through an internal flex cable. A drop, a pinch during a repair or corrosion can damage the flex, so the screen goes black, flickers or shows lines even though the display itself is fine.
This part replaces that flex cable only. It does not replace the screen. Check the old flex for tears or burnt marks and compare it with the photos before fitting. If the screen glass or panel is cracked, you need a new screen instead.
Compatibility
Specifications and compatibility
- Part
- LCD Flex Cable
- Compatible with
- Xiaomi Mi Mix 3
- Model numbers
- Check Settings › About phone
- Does not fit
- Mi Mix 2, Mi Mix 2S or any other model. It is not confirmed for the Mi Mix 3 5G
- Fixes
- A black, flickering or striped display caused by a damaged flex cable
- Does not fix
- A cracked or failed screen, a faulty main board or a battery fault
- Quality
- Brand new, OEM-quality LCD flex cable. Tested before dispatch.
- Brand
- Unbranded, compatible with Xiaomi Mi Mix 3
- In the box
- 1 × LCD 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 screen is black but the phone rings and vibrates
- The display flickers or shows lines when the phone is pressed
- The flex cable is torn or damaged after a repair
How to check your model
Open Settings › About phone. The device name should read Mi Mix 3. The model number is also shown there. Compare your old part with the photos before fitting.
The Mi Mix 3 has a sliding screen that reveals the front cameras. The Mi Mix 3 5G looks similar, so check the name carefully.
Professional installation
How a technician fits this part
- Power the phone off and remove the SIM tray.
- Warm the Mi Mix 3 glass back to soften the adhesive and lift it off slowly with a thin pick.
- Disconnect the battery before touching any other connector.
- Unplug the old flex cable at both ends and remove any shields or screws holding it.
- Fit the new flex in the same route, making sure it is not pinched or folded.
- Reconnect the battery, test the display and touch, then close the phone.
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 Mix 3?
Yes, if Settings › About phone shows Mi Mix 3. It does not fit the Mi Mix 2, Mi Mix 2S or any other model. It is not confirmed for the Mi Mix 3 5G.
Does it fit the Mi Mix 3 5G?
It is not confirmed for the Mi Mix 3 5G. This listing is for the standard Mi Mix 3. Compare your old part with the photos before fitting.
How do I know the flex is the problem and not the screen?
If the screen glass and panel are undamaged but the picture flickers when the phone flexes, or the old flex is torn or corroded, the flex is the likely cause. Testing with a known good screen confirms it.
Is it made by Xiaomi?
No. It is a brand new, OEM-quality lcd flex cable made to fit the Xiaomi Mi Mix 3, and it is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The glass back is glued on and needs heat to remove, and the battery must be disconnected first.
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.