<ul><li>It's crucial to consider efficiency, standardization, validation, and internationalization when storing phone numbers in the backend.</li><li>Storing the complete phone number with country code in international E.164 format is the most common, standardized way.</li><li>E.164 format allows easy validation and ensures uniqueness of phone numbers.</li><li>You store one canonical format, reducing the risk of redundancy or inconsistent data with this approach.</li><li>Storing phone numbers by separating country code and local number is useful in localized systems.</li><li>Storing phone number separately adds complexity by requiring extra logic for managing the country code and local number separately.</li><li>Using Google's libphonenumber library helps to handle phone number validation, formatting, and parsing efficiently.</li><li>Parsing the phone number correctly and providing the default country code while parsing are important considerations.</li><li>E.164 format is useful when needing international support, validation rules, and uniform formatting.</li><li>libphonenumber makes it much easier to handle phone number validation, formatting, and parsing efficiently.</li></ul>

Best way to store phone numbers in your app

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