You mean it controls your actions?
The most common input mechanism is a keypad, but touch screens are also found in some high-end smartphones.
Let’s blow this thing and go home!
While their products leave much to be desired, Acme delivery service is second to none;
All GSM phones use a SIM card to allow an account to be swapped among devices.
A screen which echoes the user’s typing, displays text messages, contacts and more.
You’re all clear, kid.