Is the call quality reliable?

In most cases, when you make a call from the Onoff app, your SIM card takes over to make the call, so there is no loss of quality.

When you receive a call, by default, the application prompts you to take that call using the Internet: this is called a VoIP ("Voice over IP") call. Depending on the state and quality of your 3G / 4G network or your Wi-Fi connection, it is possible to observe differences in terms of quality of call reception.

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