Turi abakoraterefone zirinda ikirere. Terefone zihutirwani igice cy'ingenzi cya sisitemu iyo ari yo yose y'itumanaho ry'ubwikorezi kandi yagenewe gukemura ibibazo byihutirwa. Byaba ari inzira y'ubutaka cyangwa gari ya moshi, ibibazo byihutirwa bishobora kubaho mu buryo butunguranye, kandi itumanaho ryihuse ni ingenzi kugira ngo habeho ubufasha bwihuse kandi butabarwe. Ukoresheje uburyo bwo gukoreshaterefone zitagira amazi, inzego zishinzwe gutwara abantu zishobora gushyiraho uburyo bwo kuvugana mu buryo bwizewe kandi butaziguye n'abagenzi, abashoferi cyangwa abakozi bashinzwe kubungabunga indege mu gihe cy'impanuka.