Are Google Contacts the same as phone contacts?
Your contacts are automatically synced when you first turn on your phone and sign into a Google Account, so make sure to add your Google Account to your Android device. Any existing contacts from that account are synced with your device.
How do I sync my Android contacts with Google Contacts?
Easily Sync Contacts Across Devices
It's efficient to maintain a single contact book, even if you use multiple platforms. You don't want to try sending someone an email only to find that you don't have all their contact details synced on your tablet. Google Contacts make this simple.
How do I transfer my contacts from Android to Google?
What is the difference between iCloud contacts and Gmail contacts?
Should I save my contacts to phone or Google?
What are my Gmail contacts?