Go to Google Contacts: https://contacts.google.com
Sign in with the Google account that has the contacts
Click the gear icon or “Settings”
Select “Undo changes”
Choose a time range to restore from
Click “Undo”
Wait for the contacts to sync back to your devices
Check the Trash in Google Contacts
Select the deleted contacts
Click “Recover”
On Android, open the Contacts app
Tap “Fix and manage”
Tap “Restore contacts”
Choose the Google account
Select the backup date
Tap “Restore”
On iPhone, go to Google Contacts in a browser
Restore contacts from “Undo changes” if they were synced with Google
If using Gmail, open Gmail
Click the Google apps menu
Open Contacts
Restore using “Undo changes” or Trash
If contacts are missing from a device, confirm sync is enabled
Check the correct Google account is signed in
Verify contacts were not saved only on the device or SIM
Export recovered contacts as a backup
Save a copy in Google Contacts as a CSV or vCard file