The Mainboard Flex for Samsung Galaxy S21 (G991B) (International Version) is a premium replacement part designed to restore your device’s connectivity and performance. This flexible PCB cable connects the smartphone’s motherboard to key components, ensuring smooth data transfer and reliable functionality. Perfect for repairing damaged or faulty flex cables, it is built to meet original specifications for the Samsung Galaxy S21 (International Model: G991B).

At Gadget Break, we provide high-quality mobile parts that guarantee durability and compatibility, giving you peace of mind during repairs. Whether you are a professional technician or handling a DIY project, this mainboard flex offers the reliability you need to bring your device back to life.