Remove Duplicate Contacts on iPhone

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    Open Contacts → look for the Duplicates Found card

    Open the Contacts app (or Phone app → Contacts). If iOS detects duplicate contacts, a card appears at the top of the list saying “Duplicates Found.” Tap it to review the duplicates.

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    Tap Merge All or review individually

    Tap Merge All to merge all detected duplicates at once, or tap individual entries to review them before merging. Merging combines the information from both entries (phone numbers, emails, addresses) into a single contact. This is available on iOS 16 and later.

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    If no card appears: check iCloud contacts

    If duplicates exist but no card appears, they may be in different accounts (iCloud vs Gmail). Settings → Contacts → Accounts — check which accounts are syncing contacts. Duplicates often appear when multiple accounts all sync the same contacts. Disable contact sync on duplicate accounts, keeping only one active contact source.

Remove Duplicate Contacts on Android (Google Contacts)

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    Open Contacts app → Fix & manage

    Open the Google Contacts app. Tap Fix & manage (or the three lines → Fix & manage). Tap Merge & fix. Google identifies contacts it thinks are duplicates.

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    Review and merge

    Tap Merge duplicates to see a list of suggested merges. Review each group and tap Merge to combine them, or dismiss if they should remain separate. Google often merges the same person from different sources (phone contacts, email contacts, social accounts).

Fix at the Source: Google Contacts on Desktop

For the most thorough cleanup: go to contacts.google.com in a browser. Click Merge & fix in the left sidebar. Google’s web interface shows all suggested duplicates and gives the clearest overview for bulk merging. Changes sync back to your phone automatically.

Preventing future duplicatesDuplicates usually occur when multiple accounts sync contacts and create multiple entries for the same person. On iPhone: Settings → Contacts → Accounts — enable contact sync for only one account (typically iCloud). On Android: sync contacts through Google only. Alternatively, use Google Contacts as the primary source and let it link all contact entries automatically.

Frequently Asked Questions

The most common cause: multiple accounts (iCloud + Google + Exchange + phone contacts) all syncing the same contacts independently. Each sync creates separate entries for the same person. Fix by choosing one primary account for contacts and disabling contact sync on all others. On iPhone: Settings → Contacts → Default Account — set to your preferred account. New contacts will only be saved there.
No — merging combines information from both entries. If one contact has a mobile number and the duplicate has an email address, the merged contact will have both. If both have the same field (e.g. the same phone number), it is deduplicated to show once. Review merged contacts afterwards to confirm the combined entry looks correct.