[Qem]

My grandma never owned a cellphone, only an old landline. And she buys dogfood in the neighborhood mom & pop store.

[xvector]

Well, we know for a fact it wasn't your mic being recorded. Maybe you walked by WiFi networks where people purchase dog food.

[chipsrafferty]

Or maybe the mic IS being recorded. We don't know it for a fact until all phone software is open sourced.