Put it near the start of a scene as the cue that pulls everyone toward a ringing phone, then follow it with Metal Gear Alert when the character finally notices the call. For a failed connection, switch to Windows XP Error Music instead, so the joke lands on the phone, not the person answering it.
關於此聲音
This is the short Samsung phone ringtone, a bright, melodic chime that lasts under a second. It sounds clean and familiar, like a phone ringing on a nearby table, and gives a quick jolt of attention without feeling harsh. The tone feels light and upbeat, so the short burst lands as cheerful rather than alarming.