Samsung Galaxy A71 Main Flex

Main Flex for Samsung Galaxy A71: Board-to-Board Connection

The main flex for Samsung Galaxy A71 re-establishes the essential communication between the main board (motherboard) and the charging board (sub-board). This interconnection flex cable carries charging data, audio signals and communication from the bottom components to the phone.

Technical Specifications

• Part type: Main interconnection flex cable
• Compatibility: Samsung Galaxy A71 (SM-A715F, SM-A715F/DS, SM-A715FN)
• Quality: Compatible

When to Replace

• The phone does not detect the charger or charge the battery — confirm the diagnosis.
• Bottom microphone or loudspeaker with no sound after an impact or opening the device — confirm the diagnosis.
• Constant loss of mobile network signal caused by damaged data lines on the flex ribbon — confirm the diagnosis.
• Torn, ripped or severed flex ribbon with broken traces during a previous repair.

Notes for the Technician

• Test before applying: connect the part to the equipment and confirm it works before securing or gluing it permanently. Thus, if there is any issue, the return or warranty is handled quickly and simply.
• Difficulty: Medium; requires detaching the back cover and removing the middle frame to access the motherboard and sub-board.
• Disconnect the battery before handling or installing the new flex cable to avoid short circuits on the power lines.
• Align the FPC connectors precisely before pressing, preventing bent pins on the boards.
• New adhesive for the back cover sold separately.

What Distinguishes This Version

This high-end compatible version was developed with reinforced contacts and exact dimensions to facilitate bench routine. It is the perfect solution for workshops and technicians looking for an economical and reliable repair without compromising the phone's operation.

Frequently Asked Questions

Does this flex cable fit the Samsung Galaxy A71 5G?
No, the internal layout and connectors of the 4G model (SM-A715) are different from the 5G variant (SM-A716).

Does replacing this flex resolve bottom microphone failures?
If the microphone is operational and the fault stems from broken traces on the interconnection flex cable, replacing it resolves the issue.