u/AmIbeinghaunted_

I (M33) live alone in a 1 bedroom in Bangalore, India. I moved here about 6 months ago. On 3 different occasions, 4 different friends have heard someone talk in the background:

1. The first time was a group call with 2 male friends. They went quiet for a few seconds being like what did you say. They heard people talking in the background. I was alone. This was post midnight. It happened 2 months ago.
2. About 10 days ago, I was talking to another friend who was unaware of the above incident, and she cut the call in the middle because she heard loud high pitched snickering. This was around midday and I was alone.
3. Last night my friend who knows of these incidents recorded the audio here. I was alone again and watching reels on my phone. I cut the call when my friend calls my name (for anonymity reasons), but this went on for 10-15 seconds more. And another 10-15 seconds before she started recording, as per my friend.

The weird thing is that I haven't experienced anything bizarre myself. It's been peaceful, I've gotten good sleep etc.

The only rational explanation I have is the possibility of cross connection. Or maybe my mic is picking up reel audios. But I don't recall watching any the first two times. My parents have heard this over traditional calls a few times and I attributed it to cross connection. What is happening? Any clue?

Audio