Duplicate Contacts: Preview

Duplicate Contacts: Preview finds duplicate contacts in your address book and shows you every merge before it happens. Nothing changes until you confirm; anything removed is restorable with one tap. Works offline, no account, no internet permission.

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🚀 How it works

1. Grant contacts access. The app says what it reads and writes.

2. Scan. Duplicate contacts are grouped by matching phone number, email or name.

3. Open a group and preview the merge: both entries side by side, field by field.

4. Tap Merge or Skip per group. No "merge all" button, on purpose.

5. Removed contacts go to Trash as .vcf snapshots, restorable for 30 days.

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🔟 Why this duplicate contacts remover is different

1️⃣ Preview before merge — see which values stay, merge in or would be dropped, color-coded.

2️⃣ Undo that works — every removed contact is kept in Trash for 30 days.

3️⃣ Conservative matching — two of three keys (phone, email, name) must agree; one shared home number never merges a family.

4️⃣ Phone number normalization — +1 555 123 4567, (555) 123-4567 and 5551234567 count as the same number.

5️⃣ All fields preserved — photo, company, title, notes, addresses, custom fields.

6️⃣ Offline. No tracking. Files stay on device. No internet permission at all.

7️⃣ Handles 20,000+ duplicate contacts without freezing, with progress you can cancel.

8️⃣ Finds duplicate contacts inside linked contacts, not only unlinked ones.

9️⃣ Detects read-only accounts (SIM, some Xiaomi and Honor) instead of failing silently.

🔟 Cyrillic, CJK and Arabic names are matched correctly.

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🔍 Find duplicate contacts the right way

➤ Same number written three ways? The duplicate contact finder normalizes numbers by country first.

➤ Same person from Google, SIM and WhatsApp? Grouped, with the match reason shown.

➤ Similar names, different numbers? Shown for review, never merged automatically.

🖥️ Preview every merge

➤ Green rows stay, yellow rows are merged in, red rows would be lost.

➤ Tap any row to choose which value wins.

🗑️ Trash and restore

➤ A .vcf snapshot is written before every merge; if it fails, the merge does not run.

➤ Restore a contact with one tap, photo included.

➤ Snapshots are cleared automatically after 30 days.

🔒 Private by design

➤ No account, no sign-in, no cloud sync.

➤ No analytics or crash reporting that phones home.

➤ Duplicate contacts and everything else stay on the device.

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🎯 Perfect for

- Removing duplicate contacts after switching from iPhone to Android

- Merging contacts after a Google account, SIM or Outlook import

- Fixing an address book where one number appears in three formats

- Anyone who wants a contact cleaner that shows its work before it deletes

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💡 Why this app exists

Most duplicate contacts cleaners merge everything in one tap. Their reviews tell the same story: families merged over one shared number, contacts gone for good, more duplicates after the "fix". This duplicate contacts app does the opposite: preview first, merge per group, snapshot before delete, undo for 30 days.

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❓ FAQ

📌 Does it delete duplicate contacts automatically?

💡 No. It finds and groups them; nothing changes until you tap Merge on a group.

📌 What if I merge the wrong contacts?

💡 Open Trash and tap Restore. The contact comes back with all fields and photo.

📌 Does it work without internet?

💡 Yes. It has no internet permission, so it cannot go online.

📌 Will I lose contact photos or custom fields?

💡 No. Every field is kept; anything that would be dropped shows in red before you confirm.

📌 Does it merge duplicate contacts on Xiaomi, Honor or Samsung phones?

💡 Yes.