He went back to sleep, chalking it up to a glitch or a dream. But the next day, the "alerts" grew more eccentric. When his sister messaged him, the phone didn't ding; it played a three-second clip of a . When his boss sent a PDF, the phone emitted a heavy sigh .
Are you looking to actual notification issues on Messenger, or
On Saturday night, Leo sat in the dark, waiting for a sign. He looked at his reflection in the black glass of the screen. He waited for a ding, a pop, or even a sigh. Nothing. He sent out dozens of messages—"Hey," "U up?", "Check this out"—just to hear a response. The phone remained mute.