Devices riddles

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

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

You use me all day every day.

Something most Coders don't use during class.

You can change pretty much everything inside of me.

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

Without me you wouldn't have an internet connection.

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

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

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

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