No country flags are available
Can you provide more context?
As this package have country code , but there is no option to select country flag
Why not use emojis or this package?
https://pub.dev/packages/country_icons
Flags are a lot of work to maintain and outside of the scope of this package focused on phone number formatting.
https://stackoverflow.com/questions/61402449/how-to-replace-country-code-to-flag-emoji-in-flutter
Here's an approach that worked for me when retrieving country flag icons from Flagpedia. You can retrieve the flags via the country code in different image formats.
Here's an example for the Nigerian flag in SVG format: https://flagcdn.com/ng.svg. Note that the country code has to be in lowercase; otherwise, you'd get a request error.
Currently, the flags for Ascension Island (ac) and Tristan da Cunha (ta) aren't supported.