UK Inmate Phone Use

When the inmate is out of his cell he can use a pay phone at any time. No money is used he has a phone card and with good behaviour and a prison job and money sent in from family he can put these points on this phone card. No cell phones are aloud. But it seems that inmates are getting cell phones into the prison.
If the inmate is found with a cell phone, he will face hole time and loss of his prison job. But this threat  does not stop the inmates smuggling phones into the prison. In the open prison their has been talk of inmates using mobile phones to call out for Pizza and other fast foods. This is not on and I think their is a lack of reporting on this, as a cover up to make the prison numbers look good.