This is a metal ring, in professional area named “cushion”. As all we know, a cushion may be used for sitting or kneeling upon, or to soften the hardness or angularity of a chair or couch, even parts into cell phone, tablets or other electronics. And the cushion here is for iPhone 5s replacement home botton, which can protect the parts from damages betweens home botton and other parts. Generally, we just know it has the function of protector in parts. But this is a for iPhone 5s replacement home botton cushion, and it is the specail one.
Here let’s open the painted veil of it. From the picture, we can see there are some parts formed a square into the ring. They will steadthily hold the home botton to avoid the botton goes wrong way and lead to unflexibility. What’s important, it can help the home botton to scanner the fingerprint through improving the SNR, keeping the function of scannering flexible while you open the locked screen. So it is the great partner of iPhone 5s home button.
Whether in assembling or fixing cell phone or tablets, even other electronics, the cushions are always the good assistants for cell phone replacement repair parts. So we shouldn’t ignore them.