<translate> Kọ bí a ti ń ṣàfikún àti ṣàkóso àwọn olùbásọrọ, àti ṣiṣé ọkan-sí-ọkan tàbí ìpè àjọrò lóri fóònù Firefox OS. <eng>
Learn how to add and manage contacts, as well as make one-to-one or conference calls on your Firefox OS phone. 