The most common input mechanism is a keypad, but touch screens are also found in some high-end smartphones.
All GSM phones use a SIM card to allow an account to be swapped among devices.
A battery, providing the power source for the phone functions.
FooPhone is an attempt to develop a mobile phone which contains only Foo.
Don’t act so surprised, Your Highness.
Do eiusmod tempor incididunt ut labore et dolore magna aliqua.