Motherboard Connector Flex Cable
Samsung Galaxy S22 / S22+ / S22 Ultra / A53 / A33 / A73 / M52 / S21 FE Motherboard Connector Flex Cable Replacement
- Fits
- Samsung Galaxy S22 / S22+ / S22 Ultra / A53 / A33 / A73 / M52 / S21 FE
- Fixes
- Damaged main board flex
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
Samsung phones use a flex cable to carry power and signals between the main board and the lower board. When it tears, gets pinched during a repair or corrodes, you can lose charging, display, signal or sound.
The flex is different for each model in this listing. Select your model from the options and check the model number in Settings before ordering. Test for other causes first, as a worn charging port or battery can give the same symptoms.
Compatibility
Specifications and compatibility
- Part
- Motherboard Connector Flex Cable
- Compatible with
- Samsung Galaxy S22 / S22+ / S22 Ultra / A53 / A33 / A73 / M52 / S21 FE
- Model numbers
- SM-S901B · SM-S908B · SM-A536B · SM-A336 · SM-M526B · SM-G990B · SM-A736B
- Does not fit
- Any model not listed in the options, including the Galaxy S23 series
- Fixes
- Faults caused by a torn, pinched or corroded main board connector flex
- Does not fix
- Main board chip faults, a failed battery or a damaged screen
- Quality
- Brand new, OEM-quality motherboard connector flex cable for the model you choose. Tested before dispatch.
- Brand
- Unbranded, compatible with Samsung Galaxy S22 / S22+ / S22 Ultra / A53 / A33 / A73 / M52 / S21 FE
- In the box
- 1 × motherboard connector flex cable for the model you select.
- 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
- No charging after a screen or battery repair
- The screen is black but the phone rings
- Signal or sound cut out at random
- The flex is torn or has a burn mark
How to check your model
Open Settings › About phone and read the Model name and Model number. Then choose the matching option, for example SM-S901B for the Galaxy S22 or SM-A536B for the Galaxy A53 5G.
The S22, S22+ and S22 Ultra look alike but each needs its own flex. The Galaxy S22+ model number is not shown in the options, so check it in Settings.
Professional installation
How a technician fits this part
- Power the phone off and warm the edges of the back cover to soften the adhesive.
- Lift the back cover carefully and disconnect the battery before anything else.
- Remove the screws and covers to reach both ends of the connector flex.
- Unclip the old flex and fit the new one in the same route, pressing both ends home.
- Reconnect the battery and test charging, display, touch, signal and sound before closing.
- Fit new back cover adhesive, close the phone 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 Galaxy S22?
Yes, if you choose the Galaxy S22 option and Settings › About phone shows model number SM-S901B. Each model has its own option.
Does the Galaxy S22 flex fit the S22 Ultra?
No. The S22, S22+ and S22 Ultra each use a different flex. Choose the option that matches your exact model.
Which models are included?
Galaxy S22, S22+, S22 Ultra, A53 5G, A33 5G, A73 5G, M52 5G and S21 FE 5G. Pick your model from the options.
Is it made by Samsung?
No. It is a brand new, OEM-quality motherboard connector flex cable made to fit the model you select, and every part is tested before dispatch.
Should I fit it myself?
We recommend professional installation. The back cover is glued, the flex runs through the phone, and the battery must be disconnected safely.
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.