- 58 133. The CPT has long stressed that custodial staff in pre-removal centres should be carefully selected and receive appropriate training. Staff should possess well-developed qualities in the fields of interpersonal communication and cultural sensitivity, given the diverse backgrounds of the detainees. At least some of them should have relevant language skills. They should also be taught to recognise possible symptoms of stress reaction displayed by detained persons and to take appropriate action. Further, the presence of both male and female staff can have a beneficial effect in terms of the custodial ethos and foster a degree of normality in a place of detention. The presence of female custodial staff members should be guaranteed in all establishments accommodating female detainees. The CPT recommends that the Greek authorities take the necessary steps to ensure that these precepts are effectively implemented in all pre-removal centres. 134. As regards foreign nationals’ contact with the outside world, in all police stations visited by the delegation, mobile phones were systematically taken away by the authorities in line with the relevant Police Regulations. Although the delegation was told by the duty officers in several police stations that detainees were allowed to access their mobile phones in order to collect contact details of relatives or even to make a phone call in the presence of a police officer, many foreign nationals interviewed by the delegation complained that this possibility had not been granted to them in practice. Consequently, contact with the outside world had been made practically impossible for indigent persons in most of the police stations visited, despite the presence of card phones. By contrast, the CPT welcomes that, thanks to a pilot project, all detained persons had full access to their mobile phones with cameras and could connect to a Wi-Fi network for at least several hours a day at Amygdaleza Pre-removal Centre.88 Further, at Fylakio RIC, foreign nationals could access the Internet for several hours a day. This measure clearly had a positive impact on the foreign nationals’ well-being and reduced tensions, as it provided both an occupation and allowed them to keep contact with their families. In contrast, access to the phone was severely restricted at the other pre-removal centres visited. While only mobile phones without a camera were admitted at Fylakio and Pyli Pre-removal Centre, access to card phones was severely restricted at Fylakio and there were no such phones at Pyli. Access to mobile phones was only granted twice a week at Moria Pre-detention Centre and all card phones were out of use. The CPT wishes to recall that most foreign nationals concerned were neither convicted nor suspected of a criminal offence other than that related to their migration status. Bearing this in mind, the CPT reiterates its recommendation that the Greek authorities permit foreign nationals held by the police in pre-removal centres to retain their mobile phones and that the relevant Police Regulations be amended accordingly. Further, the CPT recommends that the Greek authorities take steps to ensure that all foreign nationals are able to make telephone calls in all police stations and pre-removal centres and that those detainees without the financial means to pay for them are offered at least one free-of-charge telephone call per month. 88 According to the police commander in charge of the facility, the project was a success and did not cause any problems. That said, the delegation received many complaints about the weak Wi-Fi signal that was insufficient for the number of detainees who wanted to connect.