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To validate phone number inputs using E.164 format, apply standardized reference data and implementation patterns that enforce ITU-T E.164 compliance. This ensures phone numbers are stored in their correct, globally recognized formats for seamless international communication.

ISO 3166-1 and ISO 3166-2 data are used to standardize country and region codes in software components. Enforcing these international standards prevents data inconsistencies and improves interoperability when handling user registration forms and location selectors.

Build a country and region selector by implementing standardized data handling for ISO 3166-1 and ISO 3166-2 codes. This approach provides the necessary reference data to ensure selected locations are stored in their correct, standardized formats.

You need to enforce international data standards when building components that handle international country, region, and phone number data, such as user registration forms. This ensures data integrity and compliance with global conventions.

The best way to prevent data inconsistencies with international phone numbers is to enforce strict ITU-T E.164 adherence. This guarantees phone number inputs follow a standardized format, making international communication and data management seamless.