I double checked by recording once again on voice memo application and I can hear back crystal clear. It records sounds with pitch clarity and when I did the same with camera to record a video, it didn't.
Right, so the videos I sent my friend are also mute.
But when I recorded using another camera app, it was absolutely clear. Which means there's a problem only with my camera and whatsapp.
They're the only ones that can't record sound anymore, and now I feel awful that I didn't use this same app for recording videos yesterday.
Ah, well..coulda shoulda woulda.
But what's the problem now? What does this mean? I'll have to get this phone repaired. Arghh