I can't make iPhone calls abroad or use mobile data

Hi Sumosimon,

Thanks for reaching out to Apple Support Communities. It sounds like you're having an issue with making calls while traveling. We're happy to assist.

If you've confirmed with your cellular carrier you should have the ability to make calls internationally, we recommend starting with the steps here: About cellular data roaming options for your iPhone and iPad

Specifically the section "Get help when you have roaming issues during international travel" near the bottom of the article.

You can also view and find helpful contact information for supported carriers here: Wireless carrier support and features for iPhone

Be sure to select the correct region from the menu for details.

Should you see "No Service" or "Searching" in the status bar, complete the steps here: If you see No Service or Searching on your iPhone or iPad

Best!