How does Apple turn off the secondary card and only surf the Internet?

Use Settings-Phone-Call Forwarding. Select the phone that needs to reject the incoming call, and transfer the incoming call from this number to this number. The incoming call will show that it cannot be connected, but this card can also broadcast calls and the traffic can be used normally.

IPhone is a series of smart phones developed and sold by Apple, which is equipped with the iOS mobile operating system developed by Apple itself. The first generation iPhone was released on June 9, 2007.

The multi-touch technology adopted by Apple iPhone and its friendly user interface have had a far-reaching impact on the smart phone design of other manufacturers. American Time magazine called it the invention of 2007.