The devices are designed for UK networks but can work in the EU on some networks. It may connect to the Turkish network but it's not guaranteed.
Another consideration is that Northern Cyprus won't come under your EU roaming allowance, so you will be paying a premium for coverage. See here.
Customers can take their UK allowances to Austria, Azores, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Canary Islands, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal, Réunion Island, Romania, San Marino, Saint Martin (French), Saint Barthélemy, Slovakia, Slovenia, Spain, Sweden, Switzerland and Vatican City (Italy).
Note: Turkey (you may connect to a Turkish network in Northern Cyprus) and Andorra are outside the EU/EEA and not included in our European Roaming Zone.
To contact EE Customer Services dial 150 From your EE mobile or 07953 966 250 from any other phone.
EE standard opening hours are 8am to 9pm weekday, 8am to 8pm on weekends.