How Android Protects Your Phone from Apps

Apps never touch hardware directly. Android blocks them on purpose. If apps could talk

to hardware directly, any app could spy, crash, or fry your phone. Imagine hardware

is a secure building, apps try to walk in, they're stopped immediately.

No camera, no mic, no sensor. Access is denied. So how do apps get

things done? They talk to system services. Android uses something called Binder IPC.

It's a controlled messenger. Apps send request, system service decide. And below that is

the hell. Hardware obstruction layer. One clean interface, many hardware vendors.

This design makes Android secure, stable, and predictable, but also slower.