Signal Antenna Flex Cable
Samsung Galaxy S25 Edge Signal Antenna Flex Cable Replacement
- Fits
- Samsung Galaxy S25 Edge
- Fixes
- Weak or no signal
- Quality
- Brand new, OEM quality
- Fitting
- Professional install
Overview
What this part is
Inside the Samsung Galaxy S25 Edge, thin antenna cables link the main board to the antenna points around the frame. If one of these cables is pinched, torn or pulled loose, the phone can show very few bars, drop calls, or lose mobile data, even though the SIM and network are fine.
This replacement cable restores that connection. It is a common fix after a drop, liquid damage or a screen or back glass repair where a cable was disturbed. Before ordering, try your SIM in another phone to rule out a SIM or network fault.
Compatibility
Specifications and compatibility
- Part
- Signal Antenna Flex Cable
- Compatible with
- Samsung Galaxy S25 Edge
- Model numbers
- SM-S937B
- Does not fit
- Galaxy S25, S25+, S25 Ultra or any other model
- Fixes
- Weak signal, dropped calls, slow mobile data or No Service caused by a damaged antenna cable
- Does not fix
- SIM, network or account faults, Wi-Fi-only problems, or a damaged main board modem
- Quality
- Brand new, OEM-quality signal antenna flex cable. Tested before dispatch.
- Brand
- Unbranded, compatible with Samsung Galaxy S25 Edge
- In the box
- 1 × signal antenna flex cable. Tools and adhesive are not 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
- Signal bars are much lower than other phones on the same network
- Calls drop or mobile data cuts out
- The phone shows No Service, even with a working SIM
- Signal got worse after a drop or another repair
How to check your model
Open Settings › About phone. The model name should read Galaxy S25 Edge and the model number should be SM-S937B. The model number is also printed on the box.
The Galaxy S25 Edge has a 6.7-inch screen, a very slim body and two rear cameras. The Galaxy S25+ has the same screen size but a thicker body and three rear cameras.
Professional installation
How a technician fits this part
- Power the Galaxy S25 Edge off, remove the SIM tray and warm the edges of the back glass to soften the adhesive.
- Lift the back glass, remove the screws and covers, and disconnect the battery before anything else.
- Unclip the old antenna cable at both ends and ease it out of its guides.
- Route the new cable along the same path, press both ends on firmly and check the signal before sealing.
- Refit the covers and screws, apply new adhesive and press the back glass down evenly while it cures.
- Run a final check on the Galaxy S25 Edge: calls, signal, speakers, buttons, cameras and charging.
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 S25 Edge?
Yes, if Settings › About phone shows model number SM-S937B. It does not fit the Galaxy S25, S25+, S25 Ultra or any other model.
Does it fit the Galaxy S25+?
No. The Galaxy S25+ (SM-S936B) has a different internal layout. This part is for the Galaxy S25 Edge (SM-S937B) only.
Will this fix No Service caused by my SIM or network?
No. It only fixes a damaged cable inside the phone. Test your SIM in another phone first. If signal is normal there, the antenna cable is a likely cause.
Is it made by Samsung?
No. It is a brand new, OEM-quality signal antenna flex cable made to fit the Galaxy S25 Edge, and every part is tested before dispatch.
Should I fit it myself?
We recommend professional installation. Opening a Galaxy S25 Edge means heating and lifting the back glass, disconnecting the battery safely and resealing with new adhesive.
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.