I can still remember the days when beepers are one of the best things that's happened to mankind. Then when cellular phones were invented and got popular, everyone wants to get their hands on them. Lots of innovations happened from the first cellular phone that was made giving birth to smartphones. Almost every person now in the world have mobile phones. It is now a necessity to many, and to some, an addiction. And just like every technological inventions, there are tons of advantages and disadvantages that it brings to us. But overall, it's still one of the greatest invention in the history of mankind.