Put it at the start of a phone reveal, just before the home screen appears, then follow it with a bell ding when a new app opens, or a camera shutter as a photo is taken.
关于此声音
This is the short, crisp click from sliding to unlock an older iPhone, a tiny mechanical swipe sound lasting just over half a second. It feels instantly familiar and quietly satisfying, like a small piece of early smartphone nostalgia in a single tap. The sound comes from Apple's iOS unlock gesture, instantly recognisable to anyone who used those early phones.