They are completely made of plastic and can not be detected on the metal detectors.
The smallest mobile phone in the world, LONG-CZ is 68 millimeters long and 23 millimeters wide, so it is not surprising that in some countries has become a hit among – prisoners.
The price of this miniature phone is around $30, and because of its size has become extremely popular among the prisoners in the UK.
These phones are extremely easy to be smuggled into the prison. They are completely made of plastic and can not be detected on metal detectors, “says an anonymous source from a prison in Ireland.