4 cent connection fee for calls to locations outside Fongo's Free Calling Cities Fongo Support November 24, 2015 16:25 Updated Fongo incurs costs to connect to external networks and the 4 cent connection fee per call helps to offset these costs. Related articles Call mobile or landline phone numbers Long distance charges for any incoming calls Make free long distance calls Fongo expanding list of Free Calling Cities. How included cities are decided upon. Registering for a telephone number: Where does Fongo provide telephone numbers?