A mobile phone also called cellphone or handphone is one of the most popular device sold in this modern day.
Like heaps so people have this kool little device. you can get these thingies in three major companies ( Vodafone, Telecom and Telstra Clear.)
Any way..... If you don't have one of these cute little phones you should get one because it's a quick and easy way to get hold of people and it is very cheap.
Also if you have a cell phone you also are alot more safe. This is because is your in trouble the police are just a phone call away!!
So yeah That is what a cell Phone can do.