How should I make a phone call when preparing to travel abroad?

First rent a mobile WIFI that can be used locally in China. When connecting to mobile WIFI abroad, you can use TouchPal Phone to make direct calls. This can make domestic calls for free. The call quality is also very clear, and it is very convenient for the other party to be able to display your number when answering the call. In addition, the software itself is free, so there is no charge for you to use this.