Apple 6 can't make phone calls for no reason, but it can send text messages online. What happened?

The network settings of 1 and iPhone6 are incorrect.

2. There is something wrong with the 2.sim card.

3. The signal of the network operator is unstable.

4.iPhone system failure or hardware failure.

Treatment method:

1. First, check whether the signal is bad. Try replacing the card to eliminate the card problem.

2. If there is nothing wrong with the card, it is recommended to try to restore the iPhone network settings, and then open the settings of iPhone6-General-Restore-Restore the network settings.

3. If there is no card, dial 1 12 and try several times. Description: It is a problem of the operator or the card, or it may be an improper setting or software conflict. Upgrade to 8. 1 system or restore system;

4. If you can't get through to 1 12, it's a cell phone problem. To do after-sales maintenance.