Put it at the start of a charging gag, right as the cable connects, then cut to the phone screen for the payoff. For a full-battery punchline, follow it later with the Bell Ding Sound Effect once the percentage reaches 100%, so the two tech cues bookend the joke.
關於此聲音
This is a sub-second electronic chime from iOS 5, a bright ping that rises as a phone registers power. It feels instantly familiar and lightly nostalgic, like an early smartphone quietly confirming it is plugged in. The sound comes from the iOS 5 charging alert, and that recognition is why it still works as a tiny cue in memes and retro phone jokes.