Open the Contacts app
Tap Lists or Groups
Check the Recents or Recently Added section if available
Open the Phone app
Tap Recents
Look for calls from new contacts
Open the Contacts app
Use the search bar to find names you recently added
Open the Messages app
Check recent conversations with new contacts
Open the Phone app
Tap Contacts
Scroll through the list to spot newly added names
Check iCloud Contacts on another device if synced
Use third-party contact management apps if needed