How do I remove the country code from my iPhone

There are two possibilities for what you might be trying to do:

1. Remove the country code from a phone number you're dialing: Unfortunately, iPhones don't have a setting to automatically remove the country code when dialing. However, you can edit the contact information directly or enter the number without the country code when making a call.
2. Stop seeing the country code displayed for your region: This setting is controlled by your iPhone's region format. You can change it by following these steps:

• • Go to Settings > General > International
  • Under Region Format, choose your desired country.

For incoming calls and messages, the country code might be displayed based on the caller ID information received from the carrier. There's no way to directly control this on your iPhone.