The phone dubbed Zanco Fly is the smallest and is so far found prisoner’s favorite mobile phone. Zanco Fly has a screen of 0.66-inch. Therefore, the prisoners buy it form Amazon and carry it to jail with themselves.

The World’s smallest phone is prisoner’s favorite.

In the phone’s review section the prisoners have also written their reviews about it where many told they hide the phone under something and brought it in jail with themselves.

Former prisoner Karl Crater Mole, who has designed a guide for prisoners on website, has mentioned that iPhone is difficult to hide in prison so one should take such phones with him/her.

Zanco Fly is 20 grams in weight, it is very small. It also includes an important feature for prisoner’s interest; voice changer. This phone costs 24.99 pound.