One thing I've noticed... is if I use the voice recorder app, and then go into a call, the voice recorder stops. And so, it doesn't let you record audio using 2 apps at the same time. My question is.... is this a feature built into the hardware, or built into the software? Like, would it be possible to rewrite the operating system to allow 2 apps to use the record function simultaneously, or does the hardware prevent that? Thanks.