iPhone 15 Crackling Sound During Media Playback

To confirm the symptom, play a high-frequency audio source, such as a TikTok video or a system ringtone, while adjusting the volume from 50% to 100%. Observe if a persistent rattling, buzzing, or liquid-like distortion is audible from the earpiece or bottom speaker. Note the specific volume threshold where the noise becomes noticeable and determine if it occurs across multiple, independent applications.

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