Duplicate contacts returned on Samsung devices (Android 16 / One UI 8.0)

[belh-sara]

I’m using the latest version of flutter_contacts and retrieving contacts using:

final newContacts = await FlutterContacts.getAll(
  properties: ContactProperties.all,
);

On Samsung devices, some contacts are returned duplicated, with the same phone number appearing twice.

However, when checking the same contact directly in the device’s Contacts app, the phone number is displayed only once.

Environment
Device: Samsung (multiple devices observed)
Android Version: 16
One UI Version: 8.0
Flutter Version: 3.41.4
Dart Version: 3.11.1
Package: flutter_contacts: 2.0.1

[emmambang]

I have the same issue

[joachim-quis]

Hi @belh-sara, thanks for reporting! A few things that would help me investigate:

1. For a duplicated contact, are the id values identical or different?
2. If they're different, are the accounts fields different too (e.g. one from Google, one from the Samsung account)? That would suggest the Android contacts provider is returning two separate aggregated contacts that the Samsung app happens to merge for display.
3. If the ids are identical, that would point to something on the plugin side and I'd love to dig in further.

A small repro or a sample of the raw output for one duplicated pair would be really helpful.

[belh-sara]

Hello,
Thanks @joachim-quis for your reply, and I apologize for not being clearer in my previous message.
To clarify, the duplication happens at the phone number level, not the contact itself. The same number is returned twice for a contact — one formatted with spaces and the other without spaces.
This duplication is not present in the device’s native contacts app. When I check the contact directly on the device, there is only a single phone number stored.
Additionally, when a contact has multiple phone numbers, I’ve noticed that one of them may also be duplicated.
So it seems the issue occurs during the retrieval process rather than from the actual contact data.
Please let me know if you need any additional details or testing from my side.