make international calls with Lyca mobile When it comes to making international calls, Lycamobile works in the same way as other mobiles or fixed line phones. Simply dial the number you need: 00 followed by your country code, then your area code and then the phone number and press the call button. Instead of a 00 you can also use a “+”. Please note that most premium voice and text services in other countries cannot be reached from a mobile phone service when calling from outside that country.