The Nextel chirp became widely recognized through Nextel mobile phones and their push-to-talk feature, which made calls feel like two-way radio communication. Online, the sound spread in prank clips, workplace jokes, and nostalgic edits about early 2000s phones. It still gets reused because a one-second chirp is enough to signal an incoming radio message, especially in videos about old mobile tech and ringtone culture alongside sounds like the nokia arabic ringtone.