Why is it wrong for iphone's SMS function to automatically enter the area code?

The area code automatically entered by the SMS function of iPhone may be incorrect in several ways:

1. The default locale is incorrect: the SMS function of iPhone will automatically fill in the area code according to the default locale. If the default area setting is wrong, the area code automatically filled in may be incorrect. You can check and change the default regional settings in Settings.

2. Incomplete or incorrect contact information: If you send a text message to a contact person, the phone number or area code information of the contact person is incorrect, and the area code automatically filled in will also be incorrect. Please make sure that the contact information contains the correct phone number and area code.

3. Operator or area code change: If your area or the operator of your mobile phone number changes, the area code automatically filled in may be incorrect. You can consult your operator or relevant departments for the correct area code information.

4. Software problems: Sometimes, there may be bugs or malfunctions in the iPhone software, resulting in incorrect automatic area code filling. You can try to restart the iPhone or update the iOS system to solve the software problem.

If you encounter the problem that the area code automatically filled in by SMS is incorrect, it is suggested that you first check the above possible reasons and make corresponding adjustments and repairs. If the problem still exists, you can contact Apple customer service or go to an authorized repair center for help.