The Power ribbon of the Galaxy S21 5G, what is it?

This original manufacturer Power ribbon controls the power button of your Galaxy S21 5G. It ensures tactile recognition of the button and transmits power on and power off commands to the motherboard. Delivered in Service Pack, it comes straight from Samsung production lines with no further processing, sealed in its official repair packaging.

This component plays a direct role in your device's daily operation. A defect on this ribbon results in a power button that no longer responds, or responds randomly. It is tested before shipment and restores your device's initial performance without any modification.

How to tell if this ribbon needs to be replaced

The power button on your Galaxy S21 5G no longer clicks, does not return on its own, or only responds after several attempts. The screen refuses to turn off or turn back on despite your repeated presses. These symptoms almost always indicate a Power ribbon defect, not a software issue.

If your device has suffered an impact near the side button, or if it has gotten wet, the ribbon may have been damaged even if the button appears intact to the eye. An original Power ribbon eliminates any uncertainty about compatibility and exact button operation.

Origin and quality of this ribbon

This ribbon comes directly from Samsung production lines. It bears the same markings as parts installed in the factory during the initial assembly of your Galaxy S21 5G. No processing has altered it, no parts have been replaced. Service Pack packaging means the new part is delivered in the manufacturer's official repair box, with its accessories and internal documentation.

This ribbon has undergone Samsung OEM quality control before shipment. It offers the same durability as the original equipment and comes with a 2-year warranty from the shop. You can entrust it to an authorized Samsung repair technician, who will immediately recognize it as an official part.

Verify compatibility with your Galaxy S21 5G

This Power ribbon is designed exclusively for the Galaxy S21 5G. Before ordering, check the complete reference of your device: look on the back of the phone or in system settings (Settings > About phone > Model number). It must match "G991B" or compatible regional variants of the Galaxy S21 5G.

Power ribbons are not interchangeable from one model to another, even between two Galaxy S of nearby generations. A Power ribbon designed for another model will not fit the connectors of your device and could damage the motherboard during installation.