Can I make phone calls and send text messages when the iPhone network data is turned off?

You can make phone calls and send short messages, because cellular mobile data can mainly access the Internet and send and receive multimedia messages, without affecting phone calls and send and receive short messages.

How to open the network for Iphone6:

In the preemptive state of iphone6, click Settings to enter, and open "General" to enter.

In the new general interface, we will see a cellular mobile network, and we will click it to open it.

Then we can find cellular mobile data and enable 3G. We can use mobile data to surf the Internet.