Samsung Galaxy S25 Ultra Main Flex

Main Flex for Samsung Galaxy S25 Ultra: Stable Interboard Connection

The main flex for Samsung Galaxy S25 Ultra ensures communication and the transmission of data and power between the main board and the secondary charging board. This interboard flex cable is essential to restore internal connectivity and the correct operation of the lower peripherals of the device.

Technical Specifications

• Part type: Main interconnection flex cable (Main FPC)
• Compatibility: Samsung Galaxy S25 Ultra (SM-S938B, SM-S938B/DS)
• Part code: GH59-15819A
• Quality: OEM

When to Replace

• The mobile phone does not charge or recognise the USB cable — confirm the diagnosis
• Lower microphone does not capture sound or calls are muted — confirm the diagnosis
• Constant loss of mobile network or weak GSM signal after a drop — confirm the diagnosis
• Flex cable torn, creased or with damaged FPC connector during disassembly

Notes for the Technician

• Test before applying: connect the part to the equipment and confirm its operation before fixing or gluing it definitively. Thus, if there is any problem, the return or warranty is handled quickly and simply.
• Difficulty: Medium
• Access through opening the glass back cover and removing the upper shielding with NFC coil
• Disconnect the battery before handling the FPC connectors to avoid short circuits on the motherboard
• Check the correct alignment of the interboard connectors on the main board and on the charging board before pressing
• New back cover fixing adhesive sold separately

What Distinguishes This Version

This OEM version precisely respects the thickness and pinout specifications of the factory component, without logos. This is the indicated choice for professional technicians seeking connection reliability and an exact fit in the chassis during repair.

Frequently Asked Questions

What is the function of reference GH59-15819A in the Samsung Galaxy S25 Ultra?
Reference GH59-15819A identifies the revision of the main flex cable that forms the data and power bridge between the motherboard and the sub-board of the device.

Does this main flex resolve charging issues?
Yes, if the charging failure is caused by broken traces or broken pins on the interboard connector, replacing this component restores the power line.