Yes. Almost all mobile phones have at least one output port - to connect it to a computer via a USB cable.
Audio output.
Yes, the speaker and the screen.
Yes, cell phones are input-output devices.The 'input' part is you pressing keys to dial a number. The 'output' is the display screen.
NO, cell phones contin a cpu, input and output devices but no hard drive
"Phones" on an amp refers to the headphone output, which allows you to listen to the audio signal privately through headphones instead of through the amp's speakers.
output
Unicorns
just the magnets in the built in speakers
It is an output which is the band of frequencies which are audible when fed to a suitable transducer, e.g. a loudspeaker or a pair of 'phones.
no...probably
try this Q5 search that in google u can see.
Speakers can be used for any device that is intended to emit audio. Computers, MP3 players, cell phones, televisions etc. If the device is made to put out sound, chances are it already has speakers or is designed to have speakers used with it.