Product Name: On/Off Ribbon (Power Button Flex Cable)
Compatible Model: OPPO A57 (2020) / A77 (2020)
Material: Flexible PCB (FPC) with power button switch
Function:

Restores power button (on/off) functionality

Replaces damaged or unresponsive power button assembly

Ensures reliable device power‑on capability
Included: On/off ribbon only
OEM Style: Yes