Samsung Galaxy Tab A (10.5) - View Contact Sync Source
To view where a phonebook contact was imported from, see this info. If you need to transfer contacts and media from one device to another, follow these step-by-step instructions before activating the new device.
Imported contacts can originate from multiple sources (e.g., Email, accounts, apps, etc.). View this info to determine the contact source.
From a Home screen, swipe up or down from the center of the display to access the apps screen.
Tap Contacts .
Select a contact.
Tap EDIT (upper-right).
View the contact source (located above the contact name and image).