Launch the default Contacts app and tap the hamburger icon. Go to Suggestions, then hit Merge duplicates. If you don't see it, that means no duplicate contacts were detected.

The good news, though, is that it doesn’t have to be so difficult. Today, we’ll start from square one and get your contacts in tip-top shape, no matter what type of Android phone you’re ...

Tapping the corner info icon explains how: “Contacts stored with your Google Account automatically sync with this device and are available across Google services anywhere you sign-in, including ...