This often starts after a small change: a case shifted, a screen protector covered a mic hole, or Bluetooth routed audio unexpectedly. It can also happen after a system or app update, when audio services behave oddly until a restart. Light moisture or residue near mic openings can reduce clarity until fully dry. Start with safe comparisons (case off, Bluetooth off, Recorder test) before assuming damage.

It can happen, and it doesn’t always mean hardware is failing. Updates sometimes change how apps access the microphone or how audio routes to Bluetooth devices. A restart is a safe first step because it refreshes the audio system. If the timing matches an update, note it and test with Recorder plus one normal call.

Use simple tests: record your voice in Recorder and compare it to a phone call. If everything is quiet in multiple apps even with Bluetooth off and the case removed, hardware becomes more likely. If only one app is quiet, it’s usually permissions or that app’s settings. If you had recent moisture exposure, let the phone dry completely and avoid risky cleaning.

Often, yes — many cases are caused by blocked mic openings, Bluetooth routing, or a permission change. Safe steps like removing the case, turning Bluetooth off, checking microphone permissions, and restarting can clarify the cause. Gentle outside cleaning with a dry cloth is fine, but avoid sharp tools or sprays. If there is no improvement after safe checks across Recorder and calls, service may be the next practical step.