Step 1 — Click on phone number field
On your Contacts or Project Contacts page, click inside the phone number field next to a Contact.
Step 2 — Change the country code
You will immediately see a country flag picker appear. Scroll through the country codes until you find the one you need.
Step 3 — Enter phone number
After changing the country code, you can enter a phone number and it will auto-save.
Pro tip: To change your country code for all future Contacts that are added into you account, go to you Project page and click Manage in the sidebar. On the Project Defaults page, click on the country currently selected, change it, and click Save.