What is the situation that iphone6 can't answer the phone and send text messages?

First, the positioning signal may be bad. Second, it may be that the other party is blacklisted. Third, it may be that the compatibility of mobile phone cards is not very good. Fourth, it may be that the mobile phone is set with do not disturb mode.

Specific solutions:

Step one, try another position first.

Step 2, check the settings of the blacklist in the phone address book.

The third step is to check the settings of do not disturb mode in Settings.

Step 4, try to restart the phone.

Step five, you can try another calling card.