Devices riddles

You can change pretty much everything inside of me.

I used to be on your wall, but now I'm in your wrist and I have become smart.

I can smell your fear and I stop working when you need me the most.

I have the name of an animal. but I'm not one.

You use me all day every day.

Without me you wouldn't have an internet connection.

I can make you listen and block sound at the same time.

My name suggests that you can use me to write with a pen or pencil, but you actually can't.

I contain a lot of information and I disappear when you need to take me somewhere.

You can use me to write but I'm not a pencil or a pen.

Something most Coders don't use during class.