We often take our mobile phones for granted and view it as a device that has always been available.
A mobile phone has a number of components which are common across every make and model. The first is the presence of the battery which is obviously required to run the device. The second is the user interface. More commonly in the old days, this was the number keypad, but these days it’s the touch screen. The sim card is another common aspect which allows the device to connect to a particular network.
The mobile phone allows you to do a number of functions during the interaction process. The first is the ability to send text messages. The second is to make a phone call and the final common function these days is to video call.