To import contacts from Excel to Android without duplicates, the easiest and safest way is to use a dedicated tool. Before importing, clean your Excel file by removing duplicate phone numbers or email IDs. Then use Excel to vCard Converter, which allows proper field mapping and avoids creating duplicate contact entries during conversion.

The tool converts Excel contacts into a single, clean vCard file that Android supports directly. Once the vCard file is imported into your Android phone, the contacts appear without repetition. This method is ideal for bulk imports and helps you import contacts from Excel to Android without duplicates quickly and accurately.
Read more: https://www.mailconvertertools.com/blog/import-contacts-from-excel-to-android/