Can Apotheker VoIP be used on mobile phones?

Echo can make internet calls on her mobile phone. Is an open network communication software, which integrates free VoIP, free SMS, online chat, online address book and other communication services, and truly realizes the perfect communication experience of "getting in touch with anyone anytime and anywhere". Mobile phone VoIP is a communication service that connects users through callback. Callback principle: First, the traffic initiator (hereinafter referred to as the user) dials the access code of the callback platform. After receiving the calling number of the user, the platform actively hangs up the connection and dials back to the user's phone as an operator (actually the first caller) within a set time. After the user goes off-hook, the first call link is established (at this time, there is no call fee for either party), and the system plays a prompt tone. When the user dials the called number (the real called number), the callback platform initiates the second call after receiving all the called numbers, and plays the corresponding prompt tone to the user. If the called party goes off-hook, a second link is established, and the callback platform connects both links at the same time. After the call is completed, the system records the bill generated in the second link and deducts it from the user's account (or card) at the corresponding rate.